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Wyświetlanie 1-15 z 42
Tytuł:
Synthesis of Gold Nanoparticles Using Schiff Base
Autorzy:
Mihai, S.
Powiązania:
https://bibliotekanauki.pl/articles/1399716.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
05.65.+b
36.40.-c
68.65.Ac
Opis:
The Schiff base is used for the first time in the preparation of gold nanoparticles by the interaction of tris (triphenylphosphinegold)oxonium tetrafloroborate in acetonitrile medium. The gold nanostructures were characterized using UV-vis spectroscopy, X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The scanning electron microscopy allowed the examination of the morphology of the gold nanostructured film obtained by chemical deposition retains properties of individual particles and remain separated without undergoing aggregation.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 254-255
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibacterial Activities of Some Transition Metal Schiff Base Complexes
Autorzy:
Islam, M.N.
Shahriar, S.M.S.
Islam, M.K.
Jesmin, M.
Ali, M.M.
Khanam, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/411780.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
antibacterial activity
Schiff base transition metal complexes
minimum inhibitory concentration
Brine shrimp lethality
Opis:
A new series of four transition metal complexes of a Schiff base derived from salicylaldehyde and glycine, viz. [N-salicylidene glycinato diaqua cobalt (II) dimer] (SGCo)2, [N- salicylideneglycinato-di-aqua-nickel(ll)dimer] (SGN)2, [N-salicylideneglycinato-aqua-copper(II)] (SGC) and [N-salicylidene glycinato diaqua zinc(II) dimer] (SGZ)2 have been synthesized and characterized through a rapid, simple, and efficient methodology in excellent yield. These compounds were screened for in vitro antibacterial activities against six pathogenic bacteria, such as Shigella sonnei, Escherichia coli, Bacilus subtilis, Sarcina lutea, Staphylococcus aureus and Pseudomonas arioginosa. The antibacterial activity was determined by the disc diffusion method using DMSO as solvent. The results indicate that (SGC) compound exhibit a significant antibacterial activity, depending on the bacterial strain and (SGCo)2, (SGN)2 and (SGZ)2 compounds show a moderate sensitivity even with higher doses. All these compounds were found to possess cytotoxic effect.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 5; 12-20
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and antimicrobial activity of coumarinyl Schiff base derivatives
Autorzy:
Mishra, A.
Rathod, J.
Namera, D.
Thakrar, S.
Shah, A.
Powiązania:
https://bibliotekanauki.pl/articles/411623.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
gram positive bacterial
gram negative bacterial
derivatives of coumarin
Opis:
We have reported some novel N’-[(1)-ethylidene]-2-(6-methyl-2-oxo-2H-chromen-4-yl) acetohydrazide synthesized by conventional method. The reaction of 2-(6-methyl-2-oxo-2H-chromen-4-yl)acetohydrazide with substituted benzaldehyde in methanol as a solvent yielded a series of (7a-l). The structures of all synthesized compounds are well characterized by Mass, FT-IR, 1H NMR, 13C NMR and elemental analysis. Moreover, all synthesized compounds were screened for in vitro antimicrobial activity against the gram positive (Staphylococcus aureus, Bacilluas subtilis) and gram negative (Escherichia coli, P. aeruginosa, K. pneunonae, Enterobacter) bacterial strain. In which some the compounds show potential inhibition against the test organisms.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 193-201
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on Effects of Schiff Base Complex to Hydroxyapatite Bioceramics
Autorzy:
Çalışkan, F.
Tuna, M.
Akça, S.
Powiązania:
https://bibliotekanauki.pl/articles/1401434.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.-t
Opis:
The aim of this study was to evaluate the effects of Schiff base metal complex on the bio-compatible hydroxyapatite (HAp) ceramics. The reason for that was to produce, as the final product, the HAp in powder form, with extraordinary features like analgesic, antibacterial properties. This effect was provided by doping HAp powder with some Schiff base complexes during the powder extraction process. Schiff base complex used in the study was synthesized by condensation of primary amines with carbonyl compounds. The chemical structures of the synthesized compounds were confirmed by means of infrared (IR) spectroscopy and elemental analysis. Characterizations of the extracted HAp powders were carried out by using scanning electron microscopy for surface analysis and EDS analysis, X-ray diffraction for phase determination and grain size distribution. The bactericide effects of Zn SAE-added pure HAp were tested on E.Coli bacteria for the content range of 0-7 wt.% of Zn-SAE. Consequently, bacterial activity of the calcium phosphate resulting powders was evolved by adding the Zn SAE Schiff base complex.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1393-1396
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and Spectral Studies of Ru(II) Carbonyl Schiff Base Complexes
Autorzy:
Prabhakaran, B.
Santhi, N.
Emayavaramban, M.
Powiązania:
https://bibliotekanauki.pl/articles/412248.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Schiff base
ruthenium(II) complexes
tetradentate ligands
octahedral environment
Opis:
The synthesis and characterization of hexa co-ordinated ruthenium(II) complexes of the type [Ru(CO)(B)(L)] (where B = PPh3, AsPh3, py or pip and L = dibasic tetradentate Schiff base ligand) were synthesized from the reaction of [RuHCl(CO)(B)(EPh3)2] (where E = P, B = PPh3, py or pip, E = As, B = AsPh3) with different tetradentate ligands. The ligands were derived by the condensation of 5-chloro-4-methyl-2-hydroxy benzophenone with ethylenediamine, propylenediamine and o-phenylene-diamine in 1:1 molar ratio. All the compounds have been characterized by elemental analysis and spectral (FT-IR, UV-VIS and 1H-NMR) methods. An octahedral environment around Ru(II) ion has been tentatively proposed for all the complexes.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 3; 53-66
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analgesic and anti-inflammatory activities of some transition metal schiff base complexes
Autorzy:
Jesmin, M.
Islam, M. K.
Ali, S. M. M.
Powiązania:
https://bibliotekanauki.pl/articles/411762.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Analgesic activity
Anti-inflammatory activity
Schiff bases complexes
Writhing test
Opis:
Analgesic and anti-inflammatory activities of four transition metal complexes of a Schiff base derived from salicylaldehyde and glycine, viz. [N-salicylideneglycinato diaqua cobalt(II) dimer] (SGCo)2, [N-salicylideneglycinato-di-aqua-nickel(ll)dimer] (SGN)2, [N-salicylideneglycinato-aqua-copper(II)] (SGC) and [N-salicylideneglycinato diaqua zinc(II) dimer] (SGZ)2 were studied in swiss albino mice. 10 mg/kg (p.o) dose for each compound were selected throughout the research work. The analgesic activity was determined by acetic acid induced writhing and tail immersion methods. All such data were compared with standard drugs at the dose of 10 mg/kg (p.o. The anti-inflammatory activity of the test compounds was determined by the carragenan induced mice paw edema inhibition method.). Analgesic and anti-inflammatory activities of the test compounds at 10 mg/kg (p.o.) were quite comparable to those of standard drugs at 10 mg/kg (p.o.). All these compounds can be considered as potent analgesic and anti-inflammatory agents.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 8; 64-72
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mn₂O₃ Nanoparticles Synthesized from Thermal Decomposition of Manganese(II) Schiff Base Complexes
Autorzy:
Khalaji, A.
Ghorbani, M.
Powiązania:
https://bibliotekanauki.pl/articles/1029800.pdf
Data publikacji:
2018-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Mn₂O₃ nanoparticles
manganese(II)
Schiff base
thermal decomposition
Opis:
The Mn₂O₃ nanoparticles have been prepared using solid state thermal decomposition of MnL¹ and MnL², L¹=N,N'-bis(2-hydroxy-4-methoxybenzophenone)-1,3-propanediamine and L²=N,N'-bis(2-hydroxy-4-methoxybenzophenone)-1,2-cyclohexanediamine, at 500°C for 3 h and characterized by the Fourier transform infrared spectroscopy, X-ray powder diffraction and scanning electron microscopy. The Fourier transform infrared spectroscopy and X-ray powder diffraction confirm that the formed product at 500°C is Mn₂O₃. The MnL¹ and MnL² complexes were prepared from the one-pot reaction of MnCl₂·H₂O, diamine and 2-hydroxy-4-methoxybenzophenone and characterized by elemental analyses, the Fourier transform infrared spectroscopy and thermogravimetry.
Źródło:
Acta Physica Polonica A; 2018, 133, 1; 7-9
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and Characterization of Cu(II), Ni(II) and Co(II) Based Schiff Base Complexes
Autorzy:
Bhalu, A.
Vilapara, K.
Maru, M.
Shah, M.
Powiązania:
https://bibliotekanauki.pl/articles/412444.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
schiff base
metal complexes
Opis:
N-(3-Bromo-4-hydroxy-5-methoxybenzylidene)-4-Bromobenzenamine was synthesized. This was further used to synthesize Co(II), Ni(II) and Co(II) based metal complexes and characterized by FT-IR, Elemental analysis, ESI Mass and UV spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 12; 51-55
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel s-Triazinyl Schiff Base/Chalcone Congeners: Rational, Synthesis, Antimicrobial and Anti-TB Evaluation
Autorzy:
Lakum, H. P.
Shah, D. R.
Chikhalia, K. H.
Powiązania:
https://bibliotekanauki.pl/articles/412603.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
antimicrobial
Anti-TB
s-Triazine
Schiff base
Chalcone
Opis:
The occurrence of Multi Drug Resistant (MDR) infectious microbial strains has been increased upto alarming level which affects the public health worldwide. To cure this problem, a library of s-triazinyl derivatives comprising schiff base or chalcone motif have been rationalized, synthesized and screened for their in vitro antibacterial activity against five bacterial strains (Staphylococcus aureus MTCC 96, Bacillus subtilis MTCC 441, Escherichia coli MTCC 739, Pseudomonas aeruginosa MTCC 741 and Klebsiella pneumoniae MTCC 109) and four fungal strains (Aspergillus niger MTCC 282, Aspergillus fumigates MTCC 343, Aspergillus clavatus MTCC 1323, Candida albicans MTCC 183) using broth dilution technique. All the newly synthesized scaffolds were further evaluated for their in vitro anti-TB efficacy against the tubercular strain (Mycobacterium tuberculosis H37Rv) using Lowenstein-Jensen MIC method. All the derivatives were well characterized by IR, 1H NMR, 13C NMR, elemental analysis as well as mass spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 19, 1; 56-73
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, structure and properties of V(V) monooxido complex with ONO tridentate Schiff base
Autorzy:
Jurowska, Anna
Szklarzewicz, Janusz
Hodorowicz, Maciej
Gryboś, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/93142.pdf
Data publikacji:
2019
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
vanadium
complex
Schiff base
structure
5methoxysalicylaldehyde
phenylacetic hydrazide
wanad
kompleks
baza Schiffa
struktura
5 aldehyd metoksysalicylowy
hydrazyd fenylooctowy
Opis:
The oxidovanadium(V) Schiff base complex of formula [VO(L)(EtO)(EtOH)] (where H2L = Schiff base ligand derived from 5-methoxysalicylaldehyde and phenylacetic hydrazide) was synthesized and described. Complex crystalizes in triclinic P-1 space group. Octahedral geometry of the vanadium(V) centre is filed with oxido, ONO L2- ligand and two solvent molecules both in ethoxo and as neutral ethanol form. The complex is neutral, with 5- and 6-memebered ring formed by ONO ligand coordinated in octahedral plane with oxido and EtOH ligands in vertical positions. Two isomers are present in the unit cell, with different position of 5-membered ring versus vertical plane. The elemental analysis, magnetic susceptibility, thermogravimetry and spectroscopy (IR, UV-Vis) measurements were measured and are discussed. The cyclic voltammetry measurements show irreversible processes for vanadium(IV/V) redox system. Thermal stability both in a solid state (TG and SDTA measurements) as well as in solutions (at pH 7.0 and 2.0, studied by UV-Vis spectroscopy) is discussed.
Źródło:
Science, Technology and Innovation; 2019, 4, 1; 21-29
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of some thiazolidinone derivatives possessing benzimidazole nucleus
Autorzy:
Mehta, P.
Dawedra, P.
Goswami, V.
Joshi, H. S.
Powiązania:
https://bibliotekanauki.pl/articles/412250.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
4-Thiazolidinone
Benzimidazole
Schiff base
Opis:
Synthesis of new thiazolidinone derivatives possessing benzimidazole nucleus by condensation reaction of various substituted mercapto acids in presence of anhydrous ZnCl2. In our present study we have also synthesized Schiff bases of benzimidazole derivatives. All synthesized compounds were characterized by IR, 1H NMR and Mass spectroscopy.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 1; 1-8
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of benzthiazole derivatives grouping with substituted azetidinone ring and its functional behaviour
Autorzy:
Kapadiy, K. M.
Namera, D. H.
Kavadia, K. M.
Khunt, R. C.
Powiązania:
https://bibliotekanauki.pl/articles/412225.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Amino benzthiazole
Schiff base
Azetidinone
Opis:
A series of Schiff derivatives (5a-q) and azetidinone by way of amide linkage analogues (6a-q) containing 2-amino benzthiazole have been synthesized. Amide linkage were adapted from acid via reaction with hydrazine hydrate followed by reaction with different substituted aldehyde derived various Arylidene derivatives comprising with various donor and acceptor functional group. The structures of the new synthesized azetidinone derivatives were characterized on the basis of 1H-NMR, Mass, IR and elemental analysis data.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 223-232
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of 2-(methylthio)-6-oxo-6H-chromeno[3,4-e]pyrazolo[1,5-a]pyrimidine-3-carbonitrile derivatives
Autorzy:
Ajudiya, Yogesh M.
Babariya, Jayesh S.
Upadhyay, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/1070890.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Pyrazolo pyrimidine
Schiff base
coumarine
Opis:
Some new 2-(methylthio)-6-oxo-6H-chromeno[3,4-e]pyrazolo[1,5-a]pyrimidine-3-carbonitrile derivatives Having coumarine nucleus were synthesized by novel synthetic rout from 4-chloro 3-carbaldehyde coumarine derivatives and previously prepared 5-amino-3-(methylthio)-1H-pyrazole-4-carbonitrile using methanol as a solvent and catalytic amount of glacial acetic acid. All the synthesised libraries were characterized by IR, NMR and mass spectral analysis.
Źródło:
World Scientific News; 2019, 123; 258-264
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, characterization and antimicrobial activity of N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives
Autorzy:
Makwana, H.
Naliapara, Y. T.
Powiązania:
https://bibliotekanauki.pl/articles/411935.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
2-carbohydrazide
Schiff base
antimicrobial activity
Opis:
Some new N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives possessing thiophene nucleus were synthesized and characterized by IR, NMR and mass spectral analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed moderate to good antimicrobial activity and anti fungal activity.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 99-105
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel metal(II) complexes with bidentate Schiff base ligand: Synthesis, spectroscopic properties and dye decolorization functions
Autorzy:
Karakaya, C.
Dede, B.
Cicek, E.
Powiązania:
https://bibliotekanauki.pl/articles/1065151.pdf
Data publikacji:
2016-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Ka
82.80.-d
89.60.-k
Opis:
The bidentate Schiff base ligand 4-chloro-2-[1-(4-phenylphenyl)ethylideneamino]phenol and its mononuclear Co(II), Ni(II), Cu(II) and Zn(II) complexes have been synthesized. Ligand and metal complexes were characterized by elemental analyses, magnetic susceptibility, molar conductivity, ¹H- and ¹³C-NMR, the Fourier transform infrared, UV-Vis, inductively coupled plasma optical emission spectrometry, and thermogravimetric-differential thermogravimetric studies. The results suggest that the mononuclear complexes have a metal to ligand mole ratio of 1:2 and the metal(II) ions are coordinated with the phenolic oxygen and imine nitrogen atoms. Octahedral structures are proposed for the complexes of the Schiff base ligand. Furthermore, the complexes were checked for their efficiency to decolorize the dye methylene blue. In our experiments we found that metal(II) complexes had an acceptable decolorization efficiency against the dye methylene blue.
Źródło:
Acta Physica Polonica A; 2016, 129, 2; 208-212
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 42

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