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Kinetic Mass of RT–BO Defect States in a Pernigraniline‐Base Polymer
Author(s) -
Liu J.,
Wu D. C.
Publication year - 1999
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/(sici)1521-3951(199908)214:2<353::aid-pssb353>3.0.co;2-p
Subject(s) - polaron , polymer , electron , effective mass (spring–mass system) , torsion (gastropod) , relaxation (psychology) , chemistry , materials science , molecular physics , atomic physics , condensed matter physics , physics , nuclear magnetic resonance , nuclear physics , quantum mechanics , medicine , psychology , social psychology , surgery
We calculated the effective mass of ring‐torsion (RT) and bond‐order (BO) defect states in a pernigraniline‐base polymer, on the basis of an extended Ginder‐Epstein model. The calculated effective mass is sensitive to electron–RT coupling. In the case of medium coupling, the effective mass for an RT–BO soliton is ≈650 m e and that for an RT–BO polaron is ≈178 m e . RT relaxation dominates the defect mass. The large effective masses imply that linear translation of the defects is not likely to be a dominant mechanism of charge transport in the polymer.