Disubstituted Polyacetylenes Containing Photopolymerizable Vinyl Groups and Polar Ester Functionality: Polymer Synthesis, Aggregation-Enhanced Emission, and Fluorescent Pattern Formation
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- 作者：Wang Zhang Yuan ; Anjun Qin ; Jacky W. Y. Lam ; Jing Zhi Sun ; Yongqiang Dong ; Matthias Hä ; ussler ; Jianzhao Liu ; Hai Peng Xu ; Qiang Zheng ; Ben Zhong Tang
- 刊名：Macromolecules
- 出版年：2007
- 出版时间：May 1, 2007
- 年：2007
- 卷：40
- 期：9
- 页码：3159 - 3166
- 全文大小：319K
- 年卷期：v.40,no.9(May 1, 2007)
- ISSN：1520-5835
文摘
Diphenylacetylene monomers functionalized with vinyl and ester groups (1 and 2) were synthesized.The monomers were polymerized by WCl6-Ph4Sn into their corresponding polymers (P1 and P2) with the (meth)acrylic functionality remained intact, as verified by the structural analysis of the polymers using spectroscopicmethods. The polymers are soluble in common organic solvents and form films of good quality when their solutionsare spin-coated. The solutions of the polymers emit green light upon photoexcitation. Their emission spectrashift to longer wavelengths and narrow in widths when the solution concentrations are increased, presumablydue to the formation of the intramolecular excimers. When the polymer chains are aggregated, their emissionefficiencies are increased (
F up to ~88%), showing a unique phenomenon of aggregation-enhanced emission.The (meth)acrylic groups bestow photosensitivity on the polymers, whose photo-cross-linking enables readyfabrication of highly fluorescent photoresist patterns.
F up to ~88%), showing a unique phenomenon of aggregation-enhanced emission.The (meth)acrylic groups bestow photosensitivity on the polymers, whose photo-cross-linking enables readyfabrication of highly fluorescent photoresist patterns.