Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

Naokazu Idota; Kenichi Nagase; Keiji Tanaka; Teruo Okano; Masahiko Annaka

doi:10.1021/la1024229

Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

Naokazu Idota, Kenichi Nagase, Keiji Tanaka, Teruo Okano, Masahiko Annaka^*

^*Corresponding author for this work

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

29 Citations (Scopus)

Abstract

In this study, stereocontrolled poly(N-isopropylacrylamide) (PIPAAm) brushes were grafted from surfaces by atom transfer radical polymerization (ATRP) in the presence of a Lewis acid, and the effect of PIPAAm brush tacticity on the thermoresponsive wettabiliy was investigated. PIPAAm grafted by ATRP in the presence of Y(OTf)₃ showed high isotacticity, while the control brush polymerized in the absence of Y(OTf)₃ was clearly atactic. The isotacticity and molecular weight of PIPAAm brushes were controlled by polymerization conditions. The wettability of isotactic PIPAAm-grafted surfaces decreased slightly below 10°C, although the phase transition temperature of atactic surface was 30°C, and the bulk isotactic polymer was water-insoluble between 5 and 45°C.

Original language	English
Pages (from-to)	17781-17784
Number of pages	4
Journal	Langmuir
Volume	26
Issue number	23
DOIs	https://doi.org/10.1021/la1024229
Publication status	Published - 2010 Dec 7
Externally published	Yes

ASJC Scopus subject areas

Electrochemistry
Condensed Matter Physics
Surfaces and Interfaces
Materials Science(all)
Spectroscopy

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10.1021/la1024229

Cite this

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title = "Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability",

abstract = "In this study, stereocontrolled poly(N-isopropylacrylamide) (PIPAAm) brushes were grafted from surfaces by atom transfer radical polymerization (ATRP) in the presence of a Lewis acid, and the effect of PIPAAm brush tacticity on the thermoresponsive wettabiliy was investigated. PIPAAm grafted by ATRP in the presence of Y(OTf)3 showed high isotacticity, while the control brush polymerized in the absence of Y(OTf)3 was clearly atactic. The isotacticity and molecular weight of PIPAAm brushes were controlled by polymerization conditions. The wettability of isotactic PIPAAm-grafted surfaces decreased slightly below 10°C, although the phase transition temperature of atactic surface was 30°C, and the bulk isotactic polymer was water-insoluble between 5 and 45°C.",

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T1 - Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

AU - Idota, Naokazu

AU - Nagase, Kenichi

AU - Tanaka, Keiji

AU - Okano, Teruo

AU - Annaka, Masahiko

PY - 2010/12/7

Y1 - 2010/12/7

N2 - In this study, stereocontrolled poly(N-isopropylacrylamide) (PIPAAm) brushes were grafted from surfaces by atom transfer radical polymerization (ATRP) in the presence of a Lewis acid, and the effect of PIPAAm brush tacticity on the thermoresponsive wettabiliy was investigated. PIPAAm grafted by ATRP in the presence of Y(OTf)3 showed high isotacticity, while the control brush polymerized in the absence of Y(OTf)3 was clearly atactic. The isotacticity and molecular weight of PIPAAm brushes were controlled by polymerization conditions. The wettability of isotactic PIPAAm-grafted surfaces decreased slightly below 10°C, although the phase transition temperature of atactic surface was 30°C, and the bulk isotactic polymer was water-insoluble between 5 and 45°C.

AB - In this study, stereocontrolled poly(N-isopropylacrylamide) (PIPAAm) brushes were grafted from surfaces by atom transfer radical polymerization (ATRP) in the presence of a Lewis acid, and the effect of PIPAAm brush tacticity on the thermoresponsive wettabiliy was investigated. PIPAAm grafted by ATRP in the presence of Y(OTf)3 showed high isotacticity, while the control brush polymerized in the absence of Y(OTf)3 was clearly atactic. The isotacticity and molecular weight of PIPAAm brushes were controlled by polymerization conditions. The wettability of isotactic PIPAAm-grafted surfaces decreased slightly below 10°C, although the phase transition temperature of atactic surface was 30°C, and the bulk isotactic polymer was water-insoluble between 5 and 45°C.

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Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

Abstract

ASJC Scopus subject areas

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