Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water

Yeongbong Mok; Minwoo Noh; Gyu Chan Kim; Youngjun Song; Heejin Kim; Seulah Kim; Sihyeong Yi; Ji Hun Seo; Yan Lee

doi:10.1016/j.polymer.2016.11.014

Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water

Yeongbong Mok, Minwoo Noh, Gyu Chan Kim, Youngjun Song, Heejin Kim, Seulah Kim, Sihyeong Yi, Ji Hun Seo, Yan Lee

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

5 Citations (Scopus)

Abstract

Combinatorial introduction of acyl, alkylsulfonyl and azobenzene (Ab) functionalities into amine-rich branched polyethylenimine produces dual-signal-responsive polymers with both temperature- and light-responsiveness in aqueous solutions. Light-tunable L/UCST polymers were synthesized by simple introduction of acyl and Ab groups or alkylsulfonyl and Ab groups, respectively. The phase transition temperatures of the polymers were dependent upon the ratios of the functionalities and reversibly controlled by light irradiation. More than 35°C-shift of the LCST was obtained by UV-irradiation, which is the largest shift reported in water. Moreover, 19°C-shift of the UCST was obtained by UV-irradiation, which is the first UCST shift reported in polymer–water binary systems.

Original language	English
Pages (from-to)	37-43
Number of pages	7
Journal	Polymer
Volume	107
DOIs	https://doi.org/10.1016/j.polymer.2016.11.014
Publication status	Published - 2016 Dec 19

Keywords

Azobenzene
LCST
Polyethylenimine
Stimuli-responsive polymers
UCST

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2016.11.014

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@article{18e2adac4d614fe3a2ff81f9ff7aa656,

title = "Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water",

abstract = "Combinatorial introduction of acyl, alkylsulfonyl and azobenzene (Ab) functionalities into amine-rich branched polyethylenimine produces dual-signal-responsive polymers with both temperature- and light-responsiveness in aqueous solutions. Light-tunable L/UCST polymers were synthesized by simple introduction of acyl and Ab groups or alkylsulfonyl and Ab groups, respectively. The phase transition temperatures of the polymers were dependent upon the ratios of the functionalities and reversibly controlled by light irradiation. More than 35°C-shift of the LCST was obtained by UV-irradiation, which is the largest shift reported in water. Moreover, 19°C-shift of the UCST was obtained by UV-irradiation, which is the first UCST shift reported in polymer–water binary systems.",

keywords = "Azobenzene, LCST, Polyethylenimine, Stimuli-responsive polymers, UCST",

author = "Yeongbong Mok and Minwoo Noh and {Chan Kim}, Gyu and Youngjun Song and Heejin Kim and Seulah Kim and Sihyeong Yi and Seo, {Ji Hun} and Yan Lee",

note = "Funding Information: This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2015052185 ) and by the GAIA project ( G113-00055-3004-0 ) funded by Ministry of Environment, Korea . We thank Jong Woo Lee in WCU Department of Biophysics and Chemical Biology at Seoul National University for helpful discussions. Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

month = dec,

day = "19",

doi = "10.1016/j.polymer.2016.11.014",

language = "English",

volume = "107",

pages = "37--43",

journal = "Polymer (United Kingdom)",

issn = "0032-3861",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water

AU - Mok, Yeongbong

AU - Noh, Minwoo

AU - Chan Kim, Gyu

AU - Song, Youngjun

AU - Kim, Heejin

AU - Kim, Seulah

AU - Yi, Sihyeong

AU - Seo, Ji Hun

AU - Lee, Yan

N1 - Funding Information: This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government ( NRF-2015052185 ) and by the GAIA project ( G113-00055-3004-0 ) funded by Ministry of Environment, Korea . We thank Jong Woo Lee in WCU Department of Biophysics and Chemical Biology at Seoul National University for helpful discussions. Publisher Copyright: © 2016 Elsevier Ltd

PY - 2016/12/19

Y1 - 2016/12/19

N2 - Combinatorial introduction of acyl, alkylsulfonyl and azobenzene (Ab) functionalities into amine-rich branched polyethylenimine produces dual-signal-responsive polymers with both temperature- and light-responsiveness in aqueous solutions. Light-tunable L/UCST polymers were synthesized by simple introduction of acyl and Ab groups or alkylsulfonyl and Ab groups, respectively. The phase transition temperatures of the polymers were dependent upon the ratios of the functionalities and reversibly controlled by light irradiation. More than 35°C-shift of the LCST was obtained by UV-irradiation, which is the largest shift reported in water. Moreover, 19°C-shift of the UCST was obtained by UV-irradiation, which is the first UCST shift reported in polymer–water binary systems.

AB - Combinatorial introduction of acyl, alkylsulfonyl and azobenzene (Ab) functionalities into amine-rich branched polyethylenimine produces dual-signal-responsive polymers with both temperature- and light-responsiveness in aqueous solutions. Light-tunable L/UCST polymers were synthesized by simple introduction of acyl and Ab groups or alkylsulfonyl and Ab groups, respectively. The phase transition temperatures of the polymers were dependent upon the ratios of the functionalities and reversibly controlled by light irradiation. More than 35°C-shift of the LCST was obtained by UV-irradiation, which is the largest shift reported in water. Moreover, 19°C-shift of the UCST was obtained by UV-irradiation, which is the first UCST shift reported in polymer–water binary systems.

KW - Azobenzene

KW - LCST

KW - Polyethylenimine

KW - Stimuli-responsive polymers

KW - UCST

UR - http://www.scopus.com/inward/record.url?scp=84994881307&partnerID=8YFLogxK

U2 - 10.1016/j.polymer.2016.11.014

DO - 10.1016/j.polymer.2016.11.014

M3 - Article

AN - SCOPUS:84994881307

SN - 0032-3861

VL - 107

SP - 37

EP - 43

JO - Polymer (United Kingdom)

JF - Polymer (United Kingdom)

ER -

Light-tunable thermoresponsive behavior of branched polyethylenimine derivatives in water

Abstract

Keywords

ASJC Scopus subject areas

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