A novel synthetic method for well-defined polymers containing benzotriazole and diazobenzene chromophores

被引：9

作者：

Sun, Bin ^{[1
]}

Zhu, Xiulin ^{[1
]}

Zhu, Han ^{[1
]}

Cheng, Zhenping ^{[1
]}

Zhang, Zhengbiao ^{[1
]}

机构：

[1] Suzhou Univ, Sch Chem & Chem Engn, Key Lab Organ Synth Jiangsu Prov, Suzhou 215006, Peoples R China

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2007年 / 208卷 / 10期

关键词：

azobenzene; benzotriazoles; photoisomerization; postfunctionalization; reversible addition-fragmentation chain transfer (RAFT) polymerization;

D O I：

10.1002/macp.200700040

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

PBHEMA was prepared by RAFT polymerization in the presence of CPDN and AIBN. Diazobenzene groups were introduced into the sidechains by post-azo-functionalization. The resulting polymers containing benzotriazol and azobenzene groups exhibited higher molecular weight than original polymers, narrow MWD (M-W/M-n=1.17-1.26) degrees of functionality. Thermal stabilities and glass transition temperatures of the polymers increased with the introduction of diazo chromophores. The molecular weight of the polymer had a slight effect on the T-g of the polymer. The polymer showed partial crystallization as the diazo content increased above 36%. [GRAPHICS]

引用

页码：1101 / 1109

页数：9

共 50 条

[1] Synthesis and characterization of segmented liquid crystalline polymers with the azo group in the main chain
Acierno, D
Amendola, E
Bugatti, V
Concilio, S
Giorgini, L
Iannelli, P
Piotto, SP
[J]. MACROMOLECULES, 2004, 37 (17) : 6418 - 6423
[2] Complex molecular architecture polymers via RAFT
Barner, L
Barner-Kowollik, C
Davis, TP
Stenzel, MH
[J]. AUSTRALIAN JOURNAL OF CHEMISTRY, 2004, 57 (01) : 19 - 24
[3] RAFTing down under: Tales of missing radicals, fancy architectures, and mysterious holes
Barner-Kowollik, C
Davis, TP
Heuts, JPA
Stenzel, MH
Vana, P
Whittaker, M
[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2003, 41 (03) : 365 - 375
[4] Honeycomb-structured porous films from polypyrrole-containing block copolymers prepared via RAFT polymerization as a scaffold for cell growth
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Wong, KH
Williams, C
Poole-Warren, LA
Davis, TP
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[5] BRAWN CEH, 1960, T FARADAY SOC, V56, P815
[6] Mechanism of dithiobenzoate-mediated RAFT polymerization: A missing reaction step
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[7] Synthesis and characterization of polyurethane anionomers with bisazoaromatic chrornophores and carboxylate groups
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[8] Living free-radical polymerization by reversible addition-fragmentation chain transfer: The RAFT process
Chiefari, J
Chong, YK
Ercole, F
Krstina, J
Jeffery, J
Le, TPT
Mayadunne, RTA
Meijs, GF
Moad, CL
Moad, G
Rizzardo, E
Thang, SH
[J]. MACROMOLECULES, 1998, 31 (16) : 5559 - 5562
[9] Thiocarbonylthio compounds [S=C(Ph)S-R] in free radical polymerization with reversible addition-fragmentation chain transfer (RAFT polymerization). Role of the free-radical leaving group (R)
Chong, YK
Krstina, J
Le, TPT
Moad, G
Postma, A
Rizzardo, E
Thang, SH
[J]. MACROMOLECULES, 2003, 36 (07) : 2256 - 2272
[10] Thermotropic side-chain liquid crystalline copolymers containing both mono- and bisazobenzene mesogens: Synthesis and properties
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[J]. MACROMOLECULES, 2005, 38 (23) : 9526 - 9538

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