Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature

IMR OpenIR

	Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature
	Z. X. Bao; F. Colon; N. J. Pinto; C. X. Liu
	1998
发表期刊	Synthetic Metals
ISSN	0379-6779
卷号	94 期号:2 页码:211-213
摘要	The electrical resistances of powdered samples of polyaniline and poly(o-toluidine) were measured as a function of pressure using a diamond anvil cell up to 22 GPa at room temperature. Since the primary influence of pressure is sample compression, application of pressure leads to an initial decrease in the resistance (enhanced conductivity) of both samples, indicating greater interchain coherence due to reduced interchain separation. Poly(o-toluidine) is seen to have higher resistance values compared with polyaniline for all pressure values recorded, consistent with the fact that it has greater disorder due to the substitution of the larger methyl group on the polymer backbone. Resistance versus pressure measurements recorded during the loading and unloading cycle show asymmetry, suggesting irreversible structural changes in both samples. The crystallinity in poly(o-toluidine) as deduced from our resistance-pressure data is seen to be slightly less than that for polyaniline. (C) 1998 Elsevier Science S.A. All rights reserved.
部门归属	univ puerto rico, dept phys & elect, humacao, pr 00791 usa. chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;pinto, nj (reprint author), univ puerto rico, dept phys & elect, humacao, pr 00791 usa
关键词	Polyaniline And Derivatives Pressure Dependence Resistance Electrical-conductivity Localization Transport Transition Polymers Regime
URL	查看原文
WOS记录号	WOS:000073600400010
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37627
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. X. Bao,F. Colon,N. J. Pinto,et al. Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature[J]. Synthetic Metals,1998,94(2):211-213.
APA	Z. X. Bao,F. Colon,N. J. Pinto,&C. X. Liu.(1998).Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature.Synthetic Metals,94(2),211-213.
MLA	Z. X. Bao,et al."Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature".Synthetic Metals 94.2(1998):211-213.