- Tytuł:
- Counterion Effects on the Structure of Langmuir-Blodgett Films of a Benzothiazolium Dye
- Autorzy:
-
Ashwell, G. J.
Jefferies, G.
Hamilton, D. G.
Handa, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1933614.pdf
- Data publikacji:
- 1995-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.15.Lm
73.20.Μf - Opis:
- Langmuir-Blodgett films of salts of the two-legged cationic dye, E-N-hexadecyl-2-[2-(4-docosylaminophenyl)ethenyl]benzothiazolium, are Z-type. The molecular configuration within the Langmuir-Blodgett film is either "U-shaped" or "stretched" depending upon the nature of the anion, the thickness per layer being 35.1 Å for the octadecylsulphate and 54.1 Å for the iodide. For the Langmuir-Blodgett monolayers the principal components of the second order susceptibility (χ$\text{}_{zzz}^{(2)}$) are 70 pm V$\text{}^{-1}$ and 34 pm V$\text{}^{-1}$ respectively at 532 nm. In the case of the octadecylsulphate salt it was possible to fabricate thick multilayer Langmuir-Blodgett films; the second harmonic intensity increased with the number of Z-type layers, albeit subquadratically, and this may be ascribed to a progressive variation in the chromophore tilt angle.
- Źródło:
-
Acta Physica Polonica A; 1995, 88, 3; 483-488
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł