Synthesis and characterization of novel photoactive polymer poly(vinyl alcohol)-graft-poly(vinyl naphthalene)
Synthesis and characterization of novel photoactive polymer poly(vinyl alcohol)-graft-poly(vinyl naphthalene)
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新型光活性聚合物聚(乙烯醇)-接枝-聚(乙烯基萘)的合成与表征
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发表时间：
2006
期刊：
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通讯作者：
M. Nowakowska
中科院分区：
文献类型：
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作者：
M. Rymarczyk;S. Zapotoczny;M. Nowakowska
采用氮氧自由基聚合法合成了聚乙烯醇与聚乙烯萘接枝共聚物。通过分离接枝位点的产生和聚合的过程，我们可以避免均聚物的形成。由于其结构，该聚合物可溶于水，尽管疏水基团的含量高。萘发色团倾向于聚集，在水溶液中形成疏水微区。这些聚集体存在于一个非常受约束的环境中，导致聚合物的吸收和发射都有非常大的红移。该聚合物在光诱导电子转移中作为一种有效的光敏剂。© 2006 Wiley Periodicals，Inc. J Polym Sci A部分：Polym Chem 44：2675 - 2683，2006
A copolymer of poly(vinyl naphthalene) grafted onto poly(vinyl alcohol) has been synthesized with nitroxide-mediated controlled radical polymerization. By separating the processes of the generation of grafting sites and polymerization, we can avoid the formation of the homopolymer. Because of its architecture, the polymer is soluble in water, despite the high content of hydrophobic groups. The naphthalene chromophores tend to aggregate, forming hydrophobic microdomains in an aqueous solution. Those aggregates exist in a very constrained environment that leads to extraordinarily large redshifts of both the absorption and emission of the polymer. The polymer acts as an efficient photosensitizer in photoinduced electron transfer. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 2675–2683, 2006