Structural and transport properties in solid-state conducting gels: influence of the crosslink density

被引：11
作者：
Pepin-Donat, B
de Geyer, A
Viallat, A
机构：
[1] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, UMR C588, F-38402 St Martin Dheres, France
[2] Univ Grenoble 1, CEA, CNRS,Dept Rech Fondamentale Mat Condensee, UMR 585,Lab Phys Met Synthet, F-38054 Grenoble 9, France
[3] Univ Grenoble 1, Dept Rech Fondamentale Mat Condensee, CNRS, CEA,UMR 585,Lab Physicochim Mol, F-38402 St Martin Dheres, France
来源：
POLYMER | 1998年 / 39卷 / 25期
关键词：
conducting gels; solid-state structure; poly(alkylthiophene);
D O I：
10.1016/S0032-3861(98)00152-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Solid-state properties of undoped gels of poly(3-n-octylthiophene) (POT) are investigated by N-2 BET surface measurements, X-ray diffraction and small-angle X-ray scattering (SAXS) experiments. The observed variations in compacity, crystalline domain sizes and typical sizes of large-scale heterogeneities versus the crosslink ratio, R-i, all exhibit an extremum for the gel R-i = 1/100. As reported earlier. this gel in the doped state also exhibits the highest conductivity. A major interest in the crosslinking process is to enhance the conductivity by modifying POT crystallinity, A deeper understanding of the crystallization mechanisms should therefore allow one to master the transport properties in POT systems. (C) 1998 Elsevier Science Ltd. All rights reserved.
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收藏
页码：6673 / 6675
页数：3
相关论文
共 7 条
[1]  
*AFNOR, 1987, REC NORM FRANC, P172
[2]  
ALEXANDER LE, 1976, XRAY DIFFRACTION MET, pCH7
[3]   X-RAY-DIFFRACTION AND INFRARED-SPECTROSCOPY STUDIES OF ORIENTED POLY(3-ALKYLTHIOPHENES) [J].
GUSTAFSSON, G ;
INGANAS, O ;
OSTERHOLM, H ;
LAAKSO, J .
POLYMER, 1991, 32 (09) :1574-1580
[4]   A new small-angle X-ray scattering instrument on the French CRG beamline at the ESRF Multiwavelength anomalous scattering/diffraction beamline (D2AM) [J].
Simon, JP ;
Arnaud, S ;
Bley, F ;
Berar, JF ;
Caillot, B ;
Comparat, V ;
Geissler, E ;
de Geyer, A ;
Jeantey, P ;
Livet, F ;
Okuda, H .
JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 :900-904
[5]   The routes towards three-dimensional conducting polymers .2. Transport properties of fully conjugated gels of poly(3-n-octylthiophene) [J].
Sixou, B ;
PepinDonat, B ;
Nechtschein, M .
POLYMER, 1997, 38 (07) :1581-1587
[6]   State of gelation of fully conjugated conducting gels. Gel fraction, swelling, and nuclear magnetic relaxation [J].
Viallat, A ;
PepinDonat, B .
MACROMOLECULES, 1997, 30 (16) :4679-4687
[7]  
WEIDER HH, 1979, MAT SCI MONOGRAPHS, V2, P5
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