Photosensitivity and electrical properties of some azobenzene derivatives in Langmuir-Blodgett films

✍ Scribed by G. Matisova; E. Markava; I. Muzikante; E. Fonavs; L. Gerca

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 300 KB
• Volume: 6
• Category: Article
• ISSN: 1616-301X
• DOI: 10.1002/(sici)1099-0712(199609)6:5/6<279::aid-amo273>3.0.co;2-d

✦ Synopsis

Langmuir-Blodgett (LB) multilayers prepared from methyl-acylamino-azobenzene derivatives have been investigated. Reversible translcis photoisomerisation of N, N'-dicyclohexyl-N-4-[4-(methyl-palmitoylamino)phenylazo]benzoyl urea in LB films has been observed on alternate irradiation with UV (360 nm) and visible (450 nm) light. Anisotropy in the electrical conductivity of LB multilayers was observed. The electrical conductivity through the sample (bulk conductivity) was of the order of 10-'OScm-'. In the case of in-plane samples the conductivity is higher by several orders. The charge carrier trapping states in the energy gap of LB multilayers were deduced.