01476nas a2200229   4500008004100000022001400041245009200055210006900147260007300216300001200289490000800301520068500309100001900994700001601013700001801029700002001047700001401067700001501081700001601096700001401112856012001126       2006                        eng d  a0009-261400aInfluence of extended pi-conjugation units on carrier mobilities in conducting polymers0 aInfluence of extended piconjugation units on carrier mobilities   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a387-3900 v4203 a<p>Carrier mobilities in thin films of copolymers with repeat units consisting of oligothiophenes bridged by Si atoms are measured over a range of doping levels, where the numbers of thienylenes in the repeat unit are 7, 8, 10, 12, and 14. The mobilities for these polymer films increased with the increase in doping level and the mobility enhancement followed an increasing order of the pi-conjugation length. The magnitude of the mobility increase for the Si polymer comprising 14 thiophene units reached ca. 10(4), implying that this pi-conjugation length is almost sufficient to reproduce transport properties of polythiophenes. (c) 2006 Elsevier B.V. All rights reserved.</p>1 aHarima, Yutaka1 aKim, D., H.1 aTsutitori, Y.1 aJiang, Xiaoqing1 aPatil, R.1 aOoyama, Y.1 aOhshita, J.1 aKunai, A.  uhttps://library.ncl.res.in/content/influence-extended-pi-conjugation-units-carrier-mobilities-conducting-polymers-001522nas a2200229   4500008004100000022001400041245013300055210006900188260010600257300001400363490000700377520063200384653001701016653001601033653001501049653002601064100001901090700002001109700001701129700002001146856012601166       2007                        eng d  a0013-468600aCorrelation between mobility enhancement and conformational change in polyaniline and its derivatives: polaron lattice formation0 aCorrelation between mobility enhancement and conformational chan  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAR  a3615-36200 v523 a<p>Conformational changes in polyaniline, poly(methyl aniline), and poly(methoxyaniline) are studied in perchloric acid and acetonitrile by means of an in situ reflection technique with oxidation level as a parameter. Stretching of polymer chains leading to enhancement of specular reflection at the polymer-coated electrodes is found to be well correlated with the increase in carrier mobility. The concomitant change in mobility and chain conformation observed with the polyaniline family is explained in terms of the formation of polaron lattice at increased oxidation levels. (c) 2006 Elsevier Ltd. All rights reserved.</p>10aConformation10apolyaniline10areflection10ascattering : mobility1 aHarima, Yutaka1 aOgawa, Fumiyuki1 aPatil, Rahul1 aJiang, Xiaoqing  uhttps://library.ncl.res.in/content/correlation-between-mobility-enhancement-and-conformational-change-polyaniline-and-its01805nas a2200253   4500008004100000022001400041245008800055210006900143260010600212300001400318490000700332520091900339653001101258653002101269653001301290653002701303653001301330100001901343700002001362700001701382700002101399700001801420856011301438       2007                        eng d  a0013-468600aInfluence of film structure on mobilities of charge carriers in conducting polymers0 aInfluence of film structure on mobilities of charge carriers in   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcNOV  a8088-80950 v523 a<p>Two sorts of poly(3-hexylthiophene) (PHT) films with the same chemical compositions were prepared, and their electrochemical, spectroscopic, and transport properties were studied with a special interest in a possible influence of film structure on mobilities of charge carriers. One of the PHT films was electrochemically synthesized using 3-hexylthiophene as a monomer (as-grown film) and the other was obtained by dissolving the as-grown film in chloroform and then casting the polymer solution (cast film). A clear difference was observed in the mobility versus doping level plot between the two sorts of PHT films, demonstrating that the difference is caused only by a distinction in film structure. An initial decreasing feature of the mobility plot observed for the cast films was accounted for in terms of swelling of the films at an early stage of doping. (C) 2007 Elsevier Ltd. All rights reserved.</p>10aDoping10aelectrosynthesis10amobility10apoly(3-hexylthiophene)10aswelling1 aHarima, Yutaka1 aJiang, Xiaoqing1 aPatil, Rahul1 aKomaguchi, Kenji1 aMizota, Haruo  uhttps://library.ncl.res.in/content/influence-film-structure-mobilities-charge-carriers-conducting-polymers-000847nas a2200241   4500008004100000022001400041245007900055210006900134260010700203300001200310490000700322653001700329653001300346653001000359653001600369653001500385100001900400700002200419700002000441700002000461700001700481856010700498       2007                        eng d  a0032-389600aNew technique to study kinetics of chain conformation in polyaniline films0 aNew technique to study kinetics of chain conformation in polyani  aTSUKIJI DAISAN NAGAOKA BLDG, 2-4-2 TSUKIJI, CHUO-KU, TOKYO, 104, JAPANbSOC POLYMER SCIENCE JAPANcFEB  a296-2970 v3910aConformation10akinetics10alaser10apolyaniline10areflection1 aHarima, Yutaka1 aKishimoto, Kazuya1 aOgawa, Fumiyuki1 aJiang, Xiaoqing1 aPatil, Rahul  uhttps://library.ncl.res.in/content/new-technique-study-kinetics-chain-conformation-polyaniline-films-001261nas a2200229   4500008004100000022001400041245009000055210006900145260007300214300001400287490000700301520046000308653001300768653002700781653001300808653001400821653002400835100002000859700001900879700001700898856011600915       2007                        eng d  a0167-577X00aTransport study on as-grown and cast films of electrogenerated poly(3-hexylthiophene)0 aTransport study on asgrown and cast films of electrogenerated po  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a4687-46890 v613 a<p>Two kinds of poly(3-hexylthiophene) films with identical chemical compositions are prepared. One of the films is obtained by electropolymerization of 3-hexylthiophene (as-grown film) and the other is prepared by casting a solution dissolving the as-grown film (cast film). A clear difference is found in the mobility vs. doping level plots between the as-grown and cast films and its reason is discussed. (c) 2007 Elsevier B.V. All rights reserved.</p>10amobility10apoly(3-hexylthiophene)10aswelling10athin film10atransport mechanism1 aJiang, Xiaoqing1 aHarima, Yutaka1 aPatil, Rahul  uhttps://library.ncl.res.in/content/transport-study-grown-and-cast-films-electrogenerated-poly3-hexylthiophene-0