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Tytuł:
Zastosowanie chemii "klik" do syntezy biokoniugatów salinomycyny
Application of the click chemistry for the synthesis of salinomycin bioconjugates
Autorzy:
Sulik, Michał
Antoszczak, Michał
Huczyński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2200436.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
salinomycyna
jonofory
biokoniugacja
chemia click
aktywność przeciwnowotworowa
chemia klik
salinomycin
ionophores
bioconjugation
click chemistry
anticancer activity
Opis:
Bioconjugation is a well-known method of designing new drug candidates for many different diseases, including cancer. The idea of the process is to join two or more bioactive molecules by means of a covalent bond. Thus, obtained hybrids often exhibit higher efficiency compared to that of the starting compounds. Recently, the use of click chemistry, especially Huisgen 1,3-dipolar cycloaddition, has attracted much attention for the synthesis of bioconjugates of natural compounds. The great advantage of this reaction is its high yield and enzymatic stability of the 1,2,3-triazole ring. Mild conditions of this reaction guarantee that it can be used to modify compounds with low stability, such as salinomycin – a representative of ionophore antibiotics. Salinomycin is a naturally occurring lipophilic compound isolated from Streptomyces albus. It is capable of forming complexes with metal cations and transport them across the lipid membranes. This process disturbs the intercellular Na+ /K+ concentration gradient and leads to apoptosis (programmed cell death). Salinomycin exhibits high anticancer activity, including efficiency against multidrug-resistant cancer cells and cancer stem cells of different origin. Chemical modification of the salinomycin skeleton to increase its biological activity is a very interesting research direction. Our review article is focused on the application of click chemistry for the synthesis of salinomycin bioconjugates with many different biologically active compounds (Cinchona alkaloids, nucleosides, triphenylphosphonium cation, betulinic acid and other ionophore antibiotics). Some of the obtained hybrids exhibit higher efficiency compared to that of the starting compounds, e.g., increased anticancer activity, the ability to overcome multi-drug resistance, or improved ionophoretic properties. These results are a good starting point for further research on the use of click chemistry in the synthesis of highly functional hybrids of natural compounds.
Źródło:
Wiadomości Chemiczne; 2022, 76, 11-12; 883--907
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polimery z pamięcią kształtu i ich otrzymywanie
Shape-memory polymers and their preparation
Autorzy:
Andrzejewski, Kewin
Czyżów, Wiktor
Jacewicz, Dagmara
Drzeżdżon, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/2086740.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
polimery
synteza
katalizatory
zielona chemia
polymers
synthesis
catalysts
green chemistry
Opis:
SMP (shape-memory polymers) is an innovative class of programmable materials responsive to various stimuli. They are attracting increasing attention regarding possible new inventions, industrial use, and overall polymer research. After a brief introduction, this article examines the conventional shape-memory effect, methods of fabrication of shape memory polymers, and molecular and structural requirements for SMP to function. The shape memory behavior of such polymers is thoroughly presented, with the focus being on the thermo- and photo-induced SME. The uses in biomedical and industrial areas are also discussed.
Źródło:
Wiadomości Chemiczne; 2022, 76, 3-4; 183--205
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biokatalizatory i biopolimery w aspekcie zrównoważonej chemii
Biocatalysts and biopolymers in the aspect of sustainable chemistry
Autorzy:
Jesionowski, Teofil
Klapiszewski, Łukasz
Zdarta, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/1853728.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
zielona chemia
ochrona środowiska
biokataliza
biopolimery
green chemistry
environmental protection
biocatalysis
biopolymers
Opis:
The rapid development of industry, apart from the obvious benefits, also leads to a significant increase in the level of environmental pollution, which is related not only to the use of harmful substances in the production process, but also to the production of significant amounts of by-products and wastes, which pose a serious threat to the environment as well as to the health and the life of living organisms. There is therefore a need to limit the use of toxic substances at every stage of production, and where this is not possible, appropriate waste management and the development of effective methods of harmful substances removal. In this respect, it seems crucial to introduce the principles of Green Chemistry as widely as possible. Green Chemistry is a concept whose main assumptions focus on designing and conducting chemical processes in a way that minimizes the use and formation of harmful substances as much as possible. This staretgy is based on twelve principles that overlap with the main assumptions of environmental chemistry to improve environmental protection and reduce pollution. There are many techniques and methods that fit into the assumptions of the broadly understood Green Chemistry, the implementation of which allows for sustainable management of post-production waste and by-products as well as their effective disposal. One of such concepts assumes the use of waste substances as a valuable raw material, not only for energy, but above all as a precursor and/or component for the production of innovative materials with high utility potential. Another idea is the use of enzymes, i.e. natural biocatalysts that allow chemical transformations to be carried out under mild process conditions, without the need to use harmful solvents. What's more, enzymes can be used not only at the stage of conversion/synthesis of substrates, but they can also be efficient tools for removing harmful substances. Hence, it seems necessary to undertake attempts aimed at the widest possible management of waste substances, as well as conduct research, the effect of which is the production of functional biocatalytic systems for various applications.
Źródło:
Wiadomości Chemiczne; 2021, 75, 9-10; 1241-1267
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kamienie milowe w chemii klinicznej
Milestones in clinical chemistry
Autorzy:
Klimasz, K.
Tomasik, P. J.
Powiązania:
https://bibliotekanauki.pl/articles/172762.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
chemia kliniczna
glukoza
białko
enzymy
kolorymetria
clinical chemistry
glucose
protein
enzymes
colorimetry
Opis:
Clinical chemistry is the science on the border of the two disciplines: medicine and chemistry. It is defined as the application of the chemistry in the study of biological samples in order to diagnose, treat, cure diseases as well as in monitoring and prognosis [1]. Development of clinical chemistry is dated on the 19th century. Biuret test, and a method for detection of sugar in the urine were then described, also blood gases were extracted [13, 17]. In the mid of 19th century blood could be analyzed for the presence of potassium, sodium, phosphorus and calcium [31]. In the second half of 19th century Duboscq built first colorimeter. This model was widely adapted in laboratories and was in use till the 20-ties of 20th century [44]. Colorimetry also became the most popular technique in the clinical chemistry. In the 80ties of 19th century was developed a method for estimating the concentration of creatinine and detection of bilirubin [36, 39]. Increasing number of available laboratory tests resulted in the separation laboratory diagnostic as a distinguish branch of science. At the beginning of 20th century has been introduced quantitative analytical methods for determination of ammonia, urea, creatinine, cholesterol, uric acid, nitrogen, phosphorus, and chloride in biological fluids as well as measurements of blood gases. In 1930 was introduced clinical enzymology with the first method for assessing the activity of alkaline phosphatase. In the mid of 20th century in the medical laboratories routinely were measured amylase, lipase, acid and alkaline phosphatase, phosphocreatine kinase, alanine and asparagine aminotransferases [78, 79]. Development of electrical engineering and computing resulted with intensive development of laboratory instruments. First automated spectrophotometer was invented in 1957 (Autoanalyzer, Technicon company). In 1970, Automatic Clinical Analyzer f. Du Pont was able to perform determinations in any configurations not as so far in the series [99].
Źródło:
Wiadomości Chemiczne; 2016, 70, 1-2; 81-94
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Funkcjonalne materiały otrzymywane z udziałem ligniny : od projektowania do zastosowania
Functional materials obtained with the use of lignin : from design to application
Autorzy:
Klapiszewski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2200589.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
biopolimery
lignina
materiały hybrydowe
zielona chemia
biopolymers
lignin
hybrid materials
green chemistry
Opis:
Polymers of natural origin have been gaining increasing significance in sciences, as well as the industry. Owing to their renewable nature, unique properties and wide availability, they are components that can be used for numerous advanced applications. Lignin, a biopolymer, which is a waste product separated from the widely understood biomass, most usually generated in the pulp and paper industry, falls in line with this trend. In this context, the importance of cellulose, which is used in the production of paper and by-products is greater. Whereas lignin, in the vast majority, i.e. approx. 95-98%, constitutes an energy source generated as a result of its combustion. However, nowadays, due to the huge potential arising from the specific structure of lignin and its properties, attempts are being made at using this material in many different applications within the so-called high added value. Lignin, as a commonly used polymer of unique chemical structure and properties, has recently become a source of many studies utilizing its potential in the preparation of functional materials and/or biomaterials, including hybrid ones. Such systems consist of appropriate inorganic and organic elements, which as a whole constitute a functional product with special properties, not exhibited by individual components. This provides unlimited possibilities in terms of engineering, shaping and practical application in newly developed systems. The huge interest in hybrid materials and/or biomaterials results from their potential applications, namely, in medicine, electronics, optics, electrochemistry, energy storage etc. Therefore, it nowadays becomes justified and important to try and develop new, functional systems, which owing to their specific properties could result in interesting application-wise possibilities in everyday life. Therefore, the attempt to use lignin as a source of many attractive and prospective possibilities is not without significance.
Źródło:
Wiadomości Chemiczne; 2021, 75, 11-12; 1155--1169
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biochemiczna rewolucja, czyli rzecz o Leonie Marchlewskim i Marcelim Nenckim
Biochemical revolution – some remarks about Leon Marchlewski’s and Marceli Nencki’s achievements
Autorzy:
Gryglewski, R. W.
Powiązania:
https://bibliotekanauki.pl/articles/172131.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
biochemia
chemia organiczna
chlorofil
hemoglobina
Marchlewski Leon
Nencki Marceli
biochemistry
organic chemistry
chlorophyll
hemoglobin
Opis:
Understanding of the fundamental law and mechanisms governing the phenomenon of life is an inherent feature of human civilization. With the birth of philosophy comes first speculation about the physical conditions of life processes, which consequently will lead to the formation of the first scientific theories. Among them an important role plays the Hippocratic humoral theory. This scientific rout will be taken by the next generations of researchers seeking for the most appropriate methods and precise language of science. A significant breakthrough came in the 16th century, when Paracelsus coined his philosophical and alchemical doctrine which gives such attention to perpetual changes in living organisms, then described on the basis of transmutation. Nearly three centuries later, in the early nineteenth century the polish physician and chemist Jędrzej Śniadecki introduced the concept of metabolism, based on the principles that are present in compounds and chemical reactions. Just a dozen years later, in 1828, Wöhler`s synthesis of urea gives birth to organic chemistry. Language of chemistry has become a tool for the description of biological phenomena, slowly building up physiological chemistry which shortly was turned to biochemistry. For a young science one of the first challenges was the level of the rudimental for the living organisms dyes, which rightly appeared as essential for the understanding of the chemical nature of the phenomena of life. From that point the studies on chlorophyll (Pelletier, Caventou, Shunck, Hoppe- -Seyler) and hemoglobin (Hünefeld, Funke, Hoppe-Seyler) become crucial topic. In this pioneering studies significant, and sometimes decisive role was to be played by Polish scientists (Teichmann, Marchlewski, Nencki, Zaleski). Especially a few years’ time and very intense cooperation of Leon Marchlewski and Marcel Nencki would bring momentous decision. Marchlewski’s bold hypothesis about the chemical unity on the level of the basic dyes in plant and animal worlds was fully confirmed in the experimental procedure and the results achieved by Nencki brought the solution to the problem of the chemical structure of hemin. Joint research of Polish scientists became the foundation of modern biochemistry and had changed the biological and medical sciences so deeply, that we can talk about “biochemical revolution”. The following paper is an evaluation of the speech held by me during X National Organic Chemistry Symposium – OSCO X, Lodz, April 16–18, 2015.
Źródło:
Wiadomości Chemiczne; 2015, 69, 5-6; 465-477
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemia bioortogonalna – użyteczne narzędzie badania procesów wewnątrzkomórkowych
Bioortogonal chemistry - a useful tool for studying intercellular processes
Autorzy:
Latos, Krystian
Powiązania:
https://bibliotekanauki.pl/articles/2200602.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
chemia bioortogonalna
bioortogonalna ligacja
kwasy nukleinowe
białka
sacharydy
bioorthogonal chemistry
bioorthogonal ligation
nucleic acids
proteins
saccharides
Opis:
Bioorthogonal chemistry is a rapidly developing field of science operating on the border of chemistry and biology. Its initial goal was to study metabolism and imaging using fluorescently labelled compounds. Due to recent advances, bioorthogonal chemistry can also be used to engineer therapeutic bioconjugates. By using a combination of bioconjugation and advanced omics techniques, it is possible to study and modify complex interactions inside living cells. In the relatively short time since its introduction, bioorthogonal chemistry has found many applications. In nucleic acid research, it is used for labelling, e.g. with biotin, to facilitate detection, immobilization, and purification. Additionally, thanks to the use of fluorescent nucleoside analogues, it can be used to study the interaction and dynamics of nucleic acids. For the study of proteins, bioorthogonal chemistry is an invaluable tool for studying conformation, as well as intramolecular and intermolecular interactions. Using techniques such as PET and FRET it is possible to take a closer look at the structure of proteins, which has a significant impact on their functionality. By using biarsenical dyes, interactions between proteins are tracked. This is used in the study of protein aggregation in diseases such as Alzheimer's, Huntington's, and prion diseases. Thanks to this, it becomes possible to understand the mechanism and pathology of these diseases. In biosensing, the elements of bioorthogonal chemistry have been used in a variety of tests and imaging methods. In the end, methods for testing glycan are presented. The advantage of bioorthogonal methods is that they allow labelling on the whole cell or lysate. This application in glycoproteomics is extremely important due to the fact that changes in glycosylation occur during disease states.
Źródło:
Wiadomości Chemiczne; 2022, 76, 1-2; 79-95
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe rozwiązania metodyczne i techniczne w zakresie techniki mikroekstrakcji do fazy stacjonarnej
New methodological and technical approaches in the field of solid phase microextraction
Autorzy:
Marcinkowski, Ł.
Kloskowski, A.
Namieśnik, J.
Powiązania:
https://bibliotekanauki.pl/articles/172084.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
zielona chemia
mikroekstrakcja do fazy stacjonarnej
techniki przygotowania próbek
green chemistry
solid phase microextraction
sample preparation techniques
Opis:
Sample preparation has been recognized as a critical step of the analytical process, being even considered as the bottleneck of the overall process. Enrichment of target compounds, transfer of the analytes into a solvent compatible with the analytical instrumentation, minimization of potential interferences, and efficient sample clean-up, are among the main aims of sample preparation techniques. In this regard, liquid-liquid extraction and solid-phase extraction have been conventionally employed prior to the determination of relevant compounds in a variety of samples. In spite of their suitable performance, these classical techniques do not fulfill several of the challenges in analytical chemistry, including miniaturization, portability, and environmental sustainability. Furthermore, the necessity to determine relevant compounds at very low concentrations in matrices of different complexity, especially when dealing with reduced sample volumes, made the improvement of sample preparation techniques being of paramount importance. The inception of solid- -phase microextraction (SPME) involved a huge advance in this sense. SPME was firstly introduced by prof. Janusz Pawliszyn in 1990 as an alternative to conventional sample preparation methods. its small size makes SPME being highly convenient for on-site analysis and monitoring, as well as in vivo analysis. A variety of coating fibers for extracting analytes of different polarity and volatility are nowadays commercially available. Nevertheless, the development of novel SPME fibers with improved mechanical, chemical and thermal stability is a current trend in analytical chemistry, as discussed in the text. In this work the information about novel methodological and instrumental solutions in relation to different variants solid-phase microextraction (SPME) is presented. The proposed solutions fulfill the requirements resulting from the concept of sustainable development, and specifically from the implementation of green chemistry principles in analytical laboratories. Therefore particular attention was paid to the description of possible uses of novel, selective stationary phases for SPME technique. Last part presents new technical approaches in SPME field such as: Electrochemically Enhanced SPME, Membrane-SPME.
Źródło:
Wiadomości Chemiczne; 2015, 69, 9-10; 869-892
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe technologie on-line w dydaktyce chemii
New on-line technologies in teaching chemistry
Autorzy:
Lampert, J.
Polański, J.
Powiązania:
https://bibliotekanauki.pl/articles/172090.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
e-nauczanie
edukacja na odległość
e-chemia
dydaktyka chemii
e-learning
distance learning
e-chemistry
chemistry teaching
Opis:
The development of on-line technologies in the last years provided us with a possibility for the efficient video teaching in e- or blended- chemistry learning [1–10]. In this publication we reviewed materials which are available on the YouTube or specialist educational platforms [14–38]. The analysis indicated that on-line teaching has progressed rapidly over recent years (Fig. 1, Fig. 2). This refers also to chemistry. In particular we focused on organic chemistry. The on-line aided teaching of experimental chemistry can also support the traditional courses [9] Our experience indicated that even in bench chemistry on-line teaching can significantly improve the performance of the students. The e-chem project of the educational platform, started for the chemistry students in the University of Silesia in 2005 [15], is an example of the blended chemical teaching that was partially published on the YouTube website (Tab. 2). A number of other chemistry materials are available on YouTube. Some chemistry courses are also available directly at the websites of the universities while the Inducate, Skillup or Coursea [39–42] are examples of the websites that provide further useful addresses for chemistry on-line teaching. A concept of massive open on-line courses (MOCC) [43, 44] that appeared recently inspired several projects of commercial platforms for e-learning, providing a potential bases for the global teaching. The Coursera, Udacity, EdX, Canvas Network are examples of the complex educational portals for MOCCs. At the same time the important universities are vigorously playing in this area in a way to global university. At the moment the MOCC chemistry available was reviewed (Tab. 3). In summary, the development of the on-line technologies provides a possibility for the efficient blended learning based video-aided chemistry teaching. In our opinion this potential is currently controlled not by technical limitations but rather by psychology barrier and formal regulations in local educational law. However, these problems will certainly be solved with the increasing availability of the on-line courses that could be supported by additional real lab classes and/or certified by exams. Global university will be of course a strong competition for a traditional education. On the other hand this also means chemical on-line courses will be better and better developed on the basis on the available on-line technologies. Eventually, this competition will also improve a quality of the traditional chemical education.
Źródło:
Wiadomości Chemiczne; 2015, 69, 1-2; 121-145
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
E-chemia w szkole
E-chemistry at school
Autorzy:
Wojciechowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/172523.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
e-nauczanie
nauczanie zdalne
e-chemia
podręcznik elektroniczny
Moodle
e-learning
distance learning
e-chemistry
e-book
Opis:
Nowadays dynamic development of electronically supported teaching and learning methods exerts significant influence on modern teaching of chemistry. This resulted in E-chemistry: a combination of computer science and chemistry which covers many fields of knowledge, from education of chemistry and scientific information access to computer modeling of chemical compounds and reactions (Fig. 2). At present, majority of universities resigns from publication of printed materials for students and provide access to teaching materials published on-line. Current electronic systems offer a great variety of workspaces and channels to facilitate distribution of information to students, enhancement of face-to-face courses, e-books creation, preparation of teaching materials, tests and electronic exams, management of electronic lessons, or even creation of virtual chemistry laboratories. For instance, chemistry students have an on-line access to the chemical databases, publications and lots of software for chemistry. An e-learning system gives a possibility of mixing various kinds of objects such as text, images, animations, quizzes, interactive applications or links to other web sites. Furthermore, adaptive courses based on cognitive trials, learning styles, and relationships between learners can enrich each other, enabling the system to provide the learners with courses which fit their needs more accurately. There is a number of acronyms used in e-learning, often with similar meanings. Published materials and users’ activities are managed by a set of dedicated computer programs called Virtual Learning Environment (VLE). An e-learning system together with a VLE can have one of the following names: Course Management System (CMS), Learning Content Management System (LCMS), Learning Management System (LMS), Managed Learning Environment (MLE), Learning Support System (LSS) or Learning Platform (LP). E-learning systems base on a computer network and provide an on-line access to educational materials, therefore e-learning can also be called Online or Mobile Education [1]. In this paper the author shows an overview of e-learning and then a specific application of e-learning of chemistry used at the Department of Chemistry at Wrocław University of Technology [2, 3, 4], presenting some practical solutions applied.
Źródło:
Wiadomości Chemiczne; 2012, 66, 3-4; 341-353
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Witaminy z grupy B : opis właściwości fizykochemicznych oraz bioaktywności z wykorzystaniem przykładowych narzędzi cheminformatycznych
B vitamins : description of physicochemical properties and bioactivity by exemplary cheminformatics tools
Autorzy:
Banach, Sylwia
Jezierska, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/27310030.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
witaminy B
cheminformatyka
chemia medyczna
projektowanie leków
molinspiration
bioaktywność
B vitamins
cheminformatics
medicinal chemistry
drug design
bioactivity
Opis:
This paper presents a literature review of the biochemistry of vitamins B and the results of in silico physicochemical properties and bioactivity studies. The description was performed by cheminformatics tools closely related to the field of Medicinal Chemistry. It allows us to predict a great number of properties e.g. logP, TPSA, molecular volume or bioactivity associated with the chosen proteins (like kinases, proteases etc.). These investigations were carried out with the use of cheminformatics web tool Molinspiration. Its great advantages are mainly its wide availability, ease of application and quick analysis of small compounds. Thanks to the comparison with literature data of well–known B vitamins, it is possible to confirm that current cheminformatic web tools provide high reliability of the results and can support Drug Design methods.
Źródło:
Wiadomości Chemiczne; 2023, 77, 9-10; 873--896
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Receptory molekularne. Od cząsteczki receptora do funkcjonalnego materiału
Molecular receptors. From receptor molecules to functional materials
Autorzy:
Schroeder, G.
Powiązania:
https://bibliotekanauki.pl/articles/171943.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
receptory molekularne
chemia materiałowa
funkcjonalizowane materiały
kwasy boronowe
terpirydyna
molecular receptor
functionalized materials
material chemistry
boronic acids
terpyridine
Opis:
The getting knowledge of the methods of chemical compounds synthesis on the planned construction site, both in terms of arrangement of atoms and functional groups, as well as spatial structure, allowed to obtain a number of new molecular receptor systems that are capable to creating host-guest complexes. The paper will present the way of the proceedings from molecular receptor to new material with this receptor, so in other words from individual molecules to the new material with specific and previously planned properties. This process is presented for two types of molecules: aryloboronic acids and terpyridine. The ability for rapid and reversible formation of boronic acids, esters of 1,2- and 1,3-diols resulted in that these compounds were used for the synthesis of sugar receptors and consequently to build the new generation of the sensors of sugars. 2,2’:6,2’-Terpyridine is ligand, that in solution forms complexes with most transition metal ions. This compound is used for the synthesis of functional polymers, dendrymers and fluorescent sensors of ions. The presentation of the applicability of molecular receptors in the preparation of new functional materials promotes the new approach to the work of chemists. The basic research in which we define the properties of individual molecules and molecular receptors can be the beginning of the application of these compounds in the material chemistry. Additionally it can lead to the synthesis of the new materials with the specific properties or the selective construction of the measuring systems. The process from the molecule that is characterized by well-studied properties to modern material chemistry is limited only by the imagination of chemists and by the demand for new organic materials in the industry and by the new generation of the selective measurement systems.
Źródło:
Wiadomości Chemiczne; 2011, 65, 11-12; 1021-1053
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanomateriały opracowane na potrzeby dyspersyjnej ekstrakcji do fazy stałej, część 1 – modyfikacje materiałów klasycznych
Nanomaterials developed for dispersive solid phase extraction, part 1 – modifications of classical materials
Autorzy:
Ścigalski, Piotr
Kosobucki, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/2057914.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
chemia analityczna
dyspersyjna ekstrakcja do fazy stałej
nowe sorbenty
nanomateriały
analytical chemistry
dispersive solid phase extraction
novel sorbents
nanomaterials
Opis:
Solid phase extraction (SPE) is an analytical procedure developed with the purpose of separating a target analyte from a complex sample matrix prior to quantitative or qualitative determination. The purpose of such treatment is twofold: elimination of matrix constituents that could interfere with the detection process or even damage analytical equipment as well as enriching the analyte in the sample so that it is readily available for detection. Dispersive solid phase extraction (dSPE) is a relatively recent development of the standard SPE technique that is attracting growing attention due to its remarkable simplicity, short extraction time and low requirement for solvent expenditure, accompanied by high effectiveness and wide applicability. There is an enormous abundance of articles concerning advances in sample preparation and analysis published every year. The aim of this review is to bring to closer attention developments of materials with potential application as sorbents in dSPE technique through a thorough survey of recently conducted analytical studies focusing on methods utilizing novel, interesting nanomaterials in dSPE procedures and evaluation of their performance and suitability based on comparison of provided validation parameters with previously reported analytical procedures. The first part of this review focuses on widely known and utilized materials such as silica and carbon and their modifications, up to and including graphene and carbon nanotubes. Studies chosen for this review will be listed in tables alongside their relevant validation parameters at the end of each chapter. Applications found to be particularly interesting due to high effectiveness, unusual operating procedure or scope, among other reasons, will be described in greater detail.
Źródło:
Wiadomości Chemiczne; 2022, 76, 1-2; 27-42
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomateriały hybrydowe na bazie związków krzemu
Hybrid biomaterials based on silical compounds
Autorzy:
John, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2200582.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
biomateriały
chemia krzemu
polisiloksany klatkowe
silseskwioksany POSS
inżynieria tkankowa
biomaterials
silicon chemistry
polysiloxanes
cage-type silsesquioxanes POSSs
tissue engineering
Opis:
Biomaterials based on silicon compounds are considered ideal building blocks of hybrid materials due to their unique structures and excellent performance. This review article highlights the selected achievements published by the Biomaterials Chemistry Research Group led by Professor Łukasz John, working at the Faculty of Chemistry, University of Wrocław, Poland. Paper deals with specific issues in the field of polysiloxanes and cage-like silsesquioxane-based hybrid materials, ranging from monomer functionalization and materials preparation to biomedical applications and tissue engineering. The findings reported in the original papers are summarized, and the challenges and prospects in the biomaterials field are also discussed for further development and exploitation.
Źródło:
Wiadomości Chemiczne; 2022, 76, 5-6; 253--285
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanomateriały opracowane na potrzeby dyspresyjnej ekstrakcji do fazy stałej. Cz. 2, Materiały współczesne
Recent nanomaterials developed for dispresive solid phase extraction. Part 2, Modern materials
Autorzy:
Ścigalski, Piotr
Kosobucki, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/2200598.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
chemia analityczna
dyspersyjna ekstrakcja do fazy stałej
nowe sorbenty
nanomateriały
analytical chemistry
dispersive solid phase extraction
novel sorbents
nanomaterials
Opis:
The second part of the review shifts attention to novel modern materials applied to dSPE as sorbents, that are often designed specifically for the extraction of a particular analyte. This part will focus on advances in materials such a molecularly imprinted polymers (MIP), metallic organic frameworks (MOF), layered double hydroxides (LDH) or magnetic nanoparticles (MNP). As in the first part, studies chosen for this review will be listed in tables alongside their relevant validation parameters at the end of each chapter. Studiesfound to be particularly interesting due to high effectiveness, unusual operating procedure or scope, among other reasons, will be described in greater detail.
Źródło:
Wiadomości Chemiczne; 2022, 76, 1-2; 43-57
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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