Diethoxy-azobis(pyridinium) salt as photoinitiator for cationic polymerization:: Towards wavelength tunability by cis-trans isomerization

被引：22

作者：

Durmaz, Yasemin Yuksel ^{[1
]}

Zaim, Oemer ^{[2
]}

Yagci, Yusuf ^{[1
]}

机构：

[1] Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkey

[2] Trakya Univ, Dept Chem, TR-22030 Edirne, Turkey

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 11期

关键词：

alkoxy pyridinium salt; cationic photopolymerization; cis-trans isomers; photopolymerization;

D O I：

10.1002/marc.200800070

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

N,N'-diethoxy-4,4'-azobis(pyridinium) hexafluorophosphate (DEAP) has been synthesized by alkylation of the corresponding N-oxide and characterized. DEAP exhibits UV induced cis-trans isomerization with absorptions at around lambda = 459 and 360 nm, respectively. The ability of the DEAP ion to act as a photoinitiator for the cationic polymerization of cyclohexene oxide and N-vinylcarbazole is demonstrated. The initiation step involves the decay of the excited state of the trans form of the salt with homolytic bond rupture of the nitrogen-oxygen bond. Its potential use as a photoinitiator for free radical polymerization is also demonstrated using methyl methacrylate monomer as the example.

引用

页码：892 / 896

页数：5