Resonance Raman study of Langmuir—Blodgett films of 2-(4′-dioctadecylaminophenylazo)-N-methylbenzothiazolium perchlorate

✍ Scribed by Norihisa Katayama; Yukihiro Ozaki; Nobuhiro Kuramoto

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 413 KB
• Volume: 179
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(91)87028-a

✦ Synopsis

Resonance Raman spectra of I-, 3-, and 9-monolayer Langmuir-Blodgett (LB) films of 2-(4'dioctadecylaminophenylazo)-Nmethyl-benzothiazolium pcrchlorate (Azo II) have been measured with high signal-to-noise ratio and compared with those of the dye in the cast film and solutions. A band assignable to the N-N stretching mode is observed at 1458 and 1465 cm-', respectively, in the LB film spectra and in the cast film and sclution spectra. These observations suggest that Azo II takes a trans conformation around the -N-N-bond in the LB films as well as in the cast film and solutions but the conformation is slightly different between the LB Elms and the rest.

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