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Synthesis and Spectroscopic Characterization of Highly Conducting BF 3 ‐Doped Polyaniline
Author(s) -
Chaudhuri D.,
Kumar A.,
Rudra I.,
Sarma D. D.
Publication year - 2001
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 - 10.1002/1521-4095(200110)13:20<1548::aid-adma1548>3.0.co;2-s
Subject(s) - polyaniline , materials science , lone pair , boron trifluoride , imine , doping , conductivity , ab initio , molecule , polyaniline nanofibers , boron , conductive polymer , chemical physics , chemistry , polymer , organic chemistry , optoelectronics , composite material , catalysis , polymerization
A highly conducting polyaniline , doped with a Lewis acid, boron trifluoride, has been synthesized. Doping involves a transfer of the lone pair of electrons from the imine nitrogen of the polyaniline to the B center, leading to a change in the hybridization at the B site from sp 2 to sp 3 . Various spectroscopic techniques, in conjunction with ab initio calculations for geometry optimizations, are used to characterize the sample. These techniques all confirm the ability of this electron‐deficient molecule to dope polyaniline very effectively, yielding a remarkably high conductivity over a wide temperature range.