Polymerization of modified diacetylenes in Langmuir films

被引:30
作者
Alekseev, AS
Viitala, T
Domnin, IN
Koshkina, IM
Nikitenko, AA
Peltonen, J
机构
[1] Abo Akad Univ, Dept Chem Phys, FIN-20500 Turku, Finland
[2] Russian Acad Sci, Inst Gen Phys, Moscow 117942, Russia
[3] St Petersburg State Univ, Inst Chem, St Petersburg 198904, Peterhof, Russia
关键词
D O I
10.1021/la990351v
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The polymerization of a series of diacetylene Langmuir monolayers modified in the hydrophobic as well as in the hydrophilic part of the molecule was studied by measuring the kinetic changes of the mean molecular area and UV-vis spectra. The polymerization properties of the monolayers were dependent on the position of the diacetylenic unit and whether an ester or sulfonyl group was introduced in the hydrocarbon chain. The substances containing a sulfonyl group showed the highest polymerization activity. The blue-to-red transition usually observed for diacetylenes in Langmuir and Langmuir-Blodgett films due to UV irradiation was not observed, instead the studied substances formed directly a red form polydiacetylene. A first-order consecutive reaction kinetic model with a steady-state approximation was successfully adapted to the experimental results of three of the studied compounds.
引用
收藏
页码:3337 / 3344
页数:8
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