Structural Stability and Variable Dielectric Constant in Poly Sodium 4-Styrensulfonate Intercalated Graphite Oxide

被引：60

作者：

Jeong, Hae-Kyung ^{[1
]}

Jin, Mei Hua ^{[1
]}

An, Kay Hyeok ^{[2
]}

Lee, Young Hee ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Inst Basic Sci, Dept Phys,Sungkyunkwan Adv Inst Nanotechnol, Dept Energy Sci,Ctr Nanotubes & Nanostructured Co, Suwon 440746, South Korea

[2] Jeonju Machinery Res Ctr, Jeonju 561844, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 30期

关键词：

COMPOSITE FILMS;

D O I：

10.1021/jp9026282

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structural stability and dielectric constant of poly sodium 4-styrensulfonate (PSS) intercalated graphite oxides (GOs) were investigated. We found that the interlayer distance of a PSS-treated graphite oxide increased by about 1 angstrom compared to that of the precursor graphite oxide. This increase in interlayer spacing was attributed to the intercalation of a monolayer of planar PSS into the graphite oxide interlayers facilitated by a pi-pi interaction between the aromatic rings of the graphite oxide and PSS. The PSS-intercalated graphite oxide had a higher structural stability than the pristine graphite oxide during thermal treatment because of the high melting point of PSS. Furthermore, the dielectric constant of the PSS-intercalated graphite oxide increased significantly at temperatures between 20 and 100 degrees C, and both of the GO and PSS-GO samples had dielectric constants that varied as a function of temperature due to their hydrophilicity.

引用

页码：13060 / 13064

页数：5

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