ISSN:
1057-9257
Keywords:
azobenzene
;
Langmuir-Blodgett multilayers
;
photoisomerisation
;
DC electrical conductivity
;
charge carrier trapping states
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Langmuir-Blodgett (LB) multilayers prepared from methyl-acylamino-azobenzene derivatives have been investigated. Reversible transl cis photolsomerisation 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 10-10 S cm-1. 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.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
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