KINETIC-STUDY OF DIACETYLENE POLYMERIZATION IN MONOLAYERS AND MULTILAYERS OF THE LANGMUIR-BLODGETT TYPE

Citation
Vn. Kruchinin et al., KINETIC-STUDY OF DIACETYLENE POLYMERIZATION IN MONOLAYERS AND MULTILAYERS OF THE LANGMUIR-BLODGETT TYPE, Thin solid films, 240(1-2), 1994, pp. 131-137
Citations number
17
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
ISSN journal
00406090
Volume
240
Issue
1-2
Year of publication
1994
Pages
131 - 137
Database
ISI
SICI code
0040-6090(1994)240:1-2<131:KODPIM>2.0.ZU;2-4
Abstract
The kinetics of UV polymerization of two amphiphilic diacetylenes CH3( CH2)11C=CC=(CH2)8COOH (Cd-salt) and [GRAPHICS] has been studied in sit u in layers synthesized according to the Langmuir-Blodgett method. Thr ee consequent stages are observed during continuous irradiation: polym erization, photochromic transition and photolysis. The changes in the refractive index, the adsorption constant and the film thickness have been measured for each stage. The photopolymerization of diacetylenes follows a multistage route in a multilayer system. Spontaneous polymer ization under photoinitiation has been observed for the films consisti ng of less than six layers. Models are discussed giving a qualitative description of the experimental features of the process.