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Nature of the Metallic State in Conducting Polypyrrole
Author(s) -
Lee Kwanghee,
Miller Eward K.,
Aleshin Andrei N.,
Me Reghu,
Heeger Alan J.,
Kim Jong Hyun,
Yoon Chul Oh,
Lee Hosull
Publication year - 1998
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199804)10:6<456::aid-adma456>3.0.co;2-m
Subject(s) - polypyrrole , materials science , doping , metal , metal–insulator transition , transition metal , conductive polymer , condensed matter physics , polymer , weak localization , nanotechnology , chemical physics , composite material , polymerization , metallurgy , optoelectronics , organic chemistry , chemistry , magnetoresistance , physics , quantum mechanics , catalysis , magnetic field
The metallic state of conducting polymers is a subject of continued interest and controversy. By means of a series of high‐precision reflectance measurements on PF 6 ‐doped polypyrrole (PPy‐PF 6 ), the processes occurring as the system passes through the metal–insulator (M–I) transition are clarified. Evidence is presented that metallic PPy‐PF 6 is a “disordered metal” and that the M–I transition is disorder induced. It is concluded that the electronic properties of PPy‐PF 6 result from weak localization and an Anderson‐like M–I transition.