Photochemical Behavior of Vinyl Monomers Bearing Chromophore Moieties and Their Polymers

Fusheng Du; Zichen Li; Fumian Li

doi:10.14028/j.cnki.1003-3726.1999.03.017

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Photochemical Behavior of Vinyl Monomers Bearing Chromophore Moieties and Their Polymers

更新时间：2022-09-18

- Photochemical Behavior of Vinyl Monomers Bearing Chromophore Moieties and Their Polymers
- Polymer Bulletin Vol. 12, Issue 3, Pages: 99-106(1999)
- 作者机构：
  
  北京大学化学学院高分子科学与工程系，北京，100871
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.1999.03.017
  CLC：
- Published：1999-09，
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Fusheng Du, Zichen Li, Fumian Li. Photochemical Behavior of Vinyl Monomers Bearing Chromophore Moieties and Their Polymers. [J]. Polymer Bulletin 12(3):99-106(1999)
DOI：

Fusheng Du, Zichen Li, Fumian Li. Photochemical Behavior of Vinyl Monomers Bearing Chromophore Moieties and Their Polymers. [J]. Polymer Bulletin 12(3):99-106(1999) DOI： 10.14028/j.cnki.1003-3726.1999.03.017.

摘要

近年来关于电荷转移现象的研究因理论及应用方面的重要性而备受瞩目。缺电子性丙烯酰类单体可以和给电子性化合物形成激态电荷转移复合物进而引发光聚合。我们合成了一系列同一分子中既含有给电子性荧光生色团又含缺电子性双键的烯类单体，发现这类单体在相同生色团浓度下的荧光强度均远低于其相应的聚合物的荧光强度。我们将这种现象称为荧光结构自猝灭效应(SSQE) ，以区别于众所周知的浓度自猝灭现象。对于电子状态与之相反的单体，即含受电子性荧光生色团的乙烯氧基类单体，同样也观察到了SSQE。这表明SSQE 不是某一个单体表现出来的偶然现象，而是含有给电子性荧光生色基团和受电子性碳碳双键，或反之，含有受电子性荧光生色基团和给电子性碳碳双键的烯类单体共有的特性。光聚合实验结果显示，凡能表现出SSQE 的丙烯酰类单体都能够发生光诱导自聚合反应，也可以引发其它不含生色团的缺电子性烯类单体的光聚合并且其自身参与聚合。本文综述了上述研究的进展概况。

Abstract

Charge transfer phenomenon has attracted much attention due to its significance in academics and applications.A series of vinyl monomers bearing fluorophore moieties and their polymers were reviewed on their synthesis and photochemical behavior including fluorescence and photosensitizing behavior.The fluorescence intensity of these monomers are always dramatically lower than those of their corresponding polymers or copolymers at the same chromophore concentration.Such a phenomenon is termed as fluorescence "Structural Self- Quenching Effect" (SSQE)

which is caused by the intramolecular charge transfer interaction between electrondonor and electron-acceptor in the same molecule.For the SSQE of these monomers

carbon-carbon double bonds play an important role.Acrylic monomers bearing electron-donating chromophore moieties can be photopolymerized

as well as be used to initiate the photopolymerization of other monomers which do not have chromophores moieties.

关键词

电荷转移荧光结构自猝灭效应光聚合

Keywords

Charge transferFluorescence structural self-quenching effect(SSQE)Photopolymerization

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