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

共 43 条

[31] Vibrational spectra and molecular structure of 4,4′-azobis(pyridine N-oxide) [J].

Muniz-Miranda, M ;

Pergolese, B ;

Sbrana, G ;

Bigotto, A .

JOURNAL OF MOLECULAR STRUCTURE, 2005, 744 :339-343

[32] PHOTOINITIATION OF CATIONIC POLYMERIZATION .3. PHOTOSENSITIZATION OF DIPHENYLIODONIUM AND TRIPHENYLSULFONIUM SALTS [J].

PAPPAS, SP ;

GATECHAIR, LR ;

JILEK, JH .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1984, 22 (01) :77-84

[33] NOTIZ ZUR DARSTELLUNG VON N-ATHOXY-PYRIDIUM-UND-CHINOLINIUMSALZEN [J].

REICHARDT, C .

CHEMISCHE BERICHTE-RECUEIL, 1966, 99 (05) :1769-+

[34] Photoactive liquid crystalline polymer systems with light-controllable structure and optical properties [J].

Shibaev, V ;

Bobrovsky, A ;

Boiko, N .

PROGRESS IN POLYMER SCIENCE, 2003, 28 (05) :729-836

[35] Photoresponsive polymer-enzyme switches [J].

Shimoboji, T ;

Larenas, E ;

Fowler, T ;

Kulkarni, S ;

Hoffman, AS ;

Stayton, PS .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2002, 99 (26) :16592-16596

[36] Block copolymers by using combined controlled radical and radical promoted cationic polymerization methods [J].

Tasdelen, MA ;

Degirmenci, M ;

Yagci, Y ;

Nuyken, O .

POLYMER BULLETIN, 2003, 50 (03) :131-138

[37] Synthesis and the initiator activity of fluorenyltriphenylphosphonium salts in the cationic polymerization of epoxide. Novel thermally latent initiators [J].

Toneri, T ;

Watanabe, K ;

Sanda, F ;

Endo, T .

MACROMOLECULES, 1999, 32 (04) :1293-1296

[38]

YAGCI Y, 1994, MACROMOL SYMP, V85, P115

[39]

Yagci Y, 1997, ADV POLYM SCI, V127, P59

[40] PHOTOSENSITIZED CATIONIC POLYMERIZATION USING N-ETHOXY-2-METHYLPYRIDINIUM HEXAFLUOROPHOSPHATE [J].

YAGCI, Y ;

LUKAC, I ;

SCHNABEL, W .

POLYMER, 1993, 34 (06) :1130-1133

← 1 2 3 4 5 →