Thermal and photoinduced polymerization of thin diacetylene films.: 1.: Phthalimido-substituted diacetylenes

被引:17
作者
Barentsen, HM
van Dijk, M
Zuilhof, H
Sudhölter, EJR
机构
[1] Wageningen Univ, Organ Chem Lab, NL-6703 HB Wageningen, Netherlands
[2] Res Ctr, NL-6703 HB Wageningen, Netherlands
关键词
D O I
10.1021/ma990471+
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A series of phthalimido-substituted (Pht) diacetylenes with the structure Pht-(CH2)n-C drop C-C drop C-(CH2)(m)-R was synthesized. The influence of the length of the alkyl spacer n between the phthalimido group and the diacetylene group, the length of the alkyl spacer In and an additional polar group R on the thermal and UV-induced polymerization was investigated by systematic variation of n, m, and R (for R = H and m = 8, n = 1, 3, 4, 5, 8, 9; for n = 9 and In = 3, R = H, CH2OH, COOH) All synthesized compounds underwent thermal polymerization. The polymerization temperature increased with longer n spacer or shorter m spacer, and no effect was observed on variation of R. For UV-induced polymerization, a spacer length n of more than four carbon atoms was necessary, introduction of a hydrogen-bond-forming hydroxyl or carboxyl group at the other side of the diacetylene yielded polymers with a significantly higher degree of conjugation and also improved film formation on quartz enormously.
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收藏
页码:766 / 774
页数:9
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