Photoresponsive poly(methyl methacrylate)2-(polystyrene) 2 miktoarm star copolymer containing an azobenzene moiety at the core

Tuba Erdogan; Eda Gungor; Hakan Durmaz; Gurkan Hizal; Umit Tunca

doi:10.1002/pola.21253

Photoresponsive poly(methyl methacrylate)₂-(polystyrene) ₂ miktoarm star copolymer containing an azobenzene moiety at the core

Tuba Erdogan, Eda Gungor, Hakan Durmaz, Gurkan Hizal^*, Umit Tunca

^*Corresponding author for this work

Department of Chemistry

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

We prepared a novel miktoarm star copolymer with an azobenzene unit at the core via combination of atom transfer radical polymerization (ATRP) and nitroxide-mediated free radical polymerization (NMP) routes. For this purpose, first, mikto-functional initiator, 3, with tertiary bromide (for ATRP) and 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) (for NMP) functionalities and an azobenzene moiety at the core was synthesized. The initiator 3 thus obtained was used in the subsequent living radical polymerization routes such as ATRP of MMA and NMP of St, respectively, to give A₂B₂ type miktoarm star copolymer, (PMMA)₂-(PSt)₂ with an azobenzene unit at the core with controlled molecular weight and low polydispersity (M _w/M_n < 1.15). The photoresponsive properties of 3 and (PMMA)₂-(PSt)₂ miktoarm star copolymer were investigated.

Original language	English
Pages (from-to)	1396-1403
Number of pages	8
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	44
Issue number	4
DOIs	https://doi.org/10.1002/pola.21253
Publication status	Published - 15 Feb 2006

Keywords

Atom transfer radical polymerization
Azobenzene
Cis- and trans-isomerization
Miktoarm star polymer
Nitroxide-mediated free radical polymerization

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10.1002/pola.21253

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title = "Photoresponsive poly(methyl methacrylate)2-(polystyrene) 2 miktoarm star copolymer containing an azobenzene moiety at the core",

abstract = "We prepared a novel miktoarm star copolymer with an azobenzene unit at the core via combination of atom transfer radical polymerization (ATRP) and nitroxide-mediated free radical polymerization (NMP) routes. For this purpose, first, mikto-functional initiator, 3, with tertiary bromide (for ATRP) and 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) (for NMP) functionalities and an azobenzene moiety at the core was synthesized. The initiator 3 thus obtained was used in the subsequent living radical polymerization routes such as ATRP of MMA and NMP of St, respectively, to give A2B2 type miktoarm star copolymer, (PMMA)2-(PSt)2 with an azobenzene unit at the core with controlled molecular weight and low polydispersity (M w/Mn < 1.15). The photoresponsive properties of 3 and (PMMA)2-(PSt)2 miktoarm star copolymer were investigated.",

keywords = "Atom transfer radical polymerization, Azobenzene, Cis- and trans-isomerization, Miktoarm star polymer, Nitroxide-mediated free radical polymerization",

author = "Tuba Erdogan and Eda Gungor and Hakan Durmaz and Gurkan Hizal and Umit Tunca",

year = "2006",

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day = "15",

doi = "10.1002/pola.21253",

language = "English",

volume = "44",

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T1 - Photoresponsive poly(methyl methacrylate)2-(polystyrene) 2 miktoarm star copolymer containing an azobenzene moiety at the core

AU - Erdogan, Tuba

AU - Gungor, Eda

AU - Durmaz, Hakan

AU - Hizal, Gurkan

AU - Tunca, Umit

PY - 2006/2/15

Y1 - 2006/2/15

N2 - We prepared a novel miktoarm star copolymer with an azobenzene unit at the core via combination of atom transfer radical polymerization (ATRP) and nitroxide-mediated free radical polymerization (NMP) routes. For this purpose, first, mikto-functional initiator, 3, with tertiary bromide (for ATRP) and 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) (for NMP) functionalities and an azobenzene moiety at the core was synthesized. The initiator 3 thus obtained was used in the subsequent living radical polymerization routes such as ATRP of MMA and NMP of St, respectively, to give A2B2 type miktoarm star copolymer, (PMMA)2-(PSt)2 with an azobenzene unit at the core with controlled molecular weight and low polydispersity (M w/Mn < 1.15). The photoresponsive properties of 3 and (PMMA)2-(PSt)2 miktoarm star copolymer were investigated.

AB - We prepared a novel miktoarm star copolymer with an azobenzene unit at the core via combination of atom transfer radical polymerization (ATRP) and nitroxide-mediated free radical polymerization (NMP) routes. For this purpose, first, mikto-functional initiator, 3, with tertiary bromide (for ATRP) and 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) (for NMP) functionalities and an azobenzene moiety at the core was synthesized. The initiator 3 thus obtained was used in the subsequent living radical polymerization routes such as ATRP of MMA and NMP of St, respectively, to give A2B2 type miktoarm star copolymer, (PMMA)2-(PSt)2 with an azobenzene unit at the core with controlled molecular weight and low polydispersity (M w/Mn < 1.15). The photoresponsive properties of 3 and (PMMA)2-(PSt)2 miktoarm star copolymer were investigated.

KW - Atom transfer radical polymerization

KW - Azobenzene

KW - Cis- and trans-isomerization

KW - Miktoarm star polymer

KW - Nitroxide-mediated free radical polymerization

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U2 - 10.1002/pola.21253

DO - 10.1002/pola.21253

M3 - Article

AN - SCOPUS:33644607884

SN - 0887-624X

VL - 44

SP - 1396

EP - 1403

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 4

ER -

Photoresponsive poly(methyl methacrylate)₂-(polystyrene) ₂ miktoarm star copolymer containing an azobenzene moiety at the core

Abstract

Keywords

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