Supramolecular hydrogels of polyaniline-poly(styrene sulfonate) prepared in concentrated solutions

被引：74

作者：

Dai, Tingyang ^{[1
]}

Jia, Yujie ^{[1
]}

机构：

[1] Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China

来源：

POLYMER | 2011年 / 52卷 / 12期

关键词：

Conducting polymers; Hydrogels; Supercapacitors; ELECTROCHEMICAL CAPACITANCE; POLYANILINE NANOFIBERS; CONDUCTING POLYANILINE; INTERFACIAL SYNTHESIS; CARBON; GELS; COMPOSITE; POLYMERIZATION; CONSTRUCTION; ENHANCEMENT;

D O I：

10.1016/j.polymer.2011.04.006

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polyaniline-poly(styrene sulfonate) (PAn-PSS) hydrogels have been synthesized via supramolecular self-assembly between positively-charged PAn chains and negatively-charged PSS chains. Phase diagram is plotted to systematically investigate the gelation conditions for the PAn-PSS system. A hierarchical porous microstructure consisting of oriented 1D nanofibers is observed in the hydrogels, and the phase structure, molecular structure and crystal structure are also characterized. Based on the investigation of a unique transformation of the hydrogels to colloidal particles in alkaline solutions, the electrostatic interaction is proposed to be the origin force for the gelation of the materials. Additionally, in comparison with conventional PAn-PSS colloids, as-prepared PAn-PSS hydrogels are demonstrated to possess improved capacitance performance, such as higher energy density, higher power density and better electrochemical stability. The present study gives valuable hints for achieving controlled fabrication of supramolecular materials with designed structures and outstanding properties. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2550 / 2558

页数：9

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