Thermo-Responsive Assembly of Chemically Reduced Graphene and Poly(N-isopropylacrylamide)

被引：38

作者：

Lee, Da Young ^{[2
]}

Yoon, Seyoung ^{[2
]}

Oh, Yeon Jeong ^{[1
]}

Park, Sung Young ^{[1
]}

In, Insik ^{[2
]}

机构：

[1] Chungju Natl Univ, Dept Chem & Biol Engn, Chungju 380702, South Korea

[2] Chungju Natl Univ, Dept Polymer Sci & Engn, Chungju 380702, South Korea

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2011年 / 212卷 / 04期

关键词：

hydrophobic interaction; LCST; poly(N-isopropylacrylamide); soluble graphene; thermosensitive; TRANSFER RADICAL POLYMERIZATION; TRANSPARENT CONDUCTORS; N-ISOPROPYLACRYLAMIDE; AQUEOUS DISPERSIONS; GRAPHITE OXIDE; FILMS; SHEETS; NANOPLATELETS; EXFOLIATION; WATER;

D O I：

10.1002/macp.201000518

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A stable aqueous solution of reduced graphene is prepared by chemical reduction of GO in the presence of PNIPAM in water through the hydrophobic interaction between graphene plates and PNIPAM backbones. Thermosensitive solubility switching of the graphene/PNIPAM assembly was successfully demonstrated below or above the LCST, which is higher (up to 42 degrees C) than the LCST of pure PNIPAM (36 degrees C) because interacting PNIPAM chains on graphene plates are less mobile than free PNIPAM chains. The success of PNIPAM as stabilizer for reduced graphene solution can be explained by both efficient hydrophobic interaction with graphene surface and matching of surface tension of water (72.8 mJ . m(-2)) with "graphene-friendly surface tension" (40-50 mJ . m(-2)) by the presence of PNIPAM in water (41.8 mJ . m(-2)).

引用

页码：336 / 341

页数：6

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