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New Conjugated Ladder Polymer Containing Carbazole Moieties
Author(s) -
Patil S.A.,
Scherf U.,
Kadashchuk A.
Publication year - 2003
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200304344
Subject(s) - carbazole , materials science , polymer , conjugated system , phenylene , dipole , chemical physics , polar , polymer chemistry , photochemistry , organic chemistry , composite material , chemistry , physics , astronomy
A new ladder polymer incorporating a polar carbazole group within the main chain, ladder‐type poly( para ‐phenylene carbazole), LPPPC, was synthesized and characterized by luminescence techniques. Its properties are compared to that of the well‐known methyl‐substituted ladder‐type poly( para ‐phenylene), MeLPPP. The results obtained evidence a very low energetic disorder in this new polymer, presumably due to its near‐perfect intrachain structure and low content of defects. It was found that although the density of states (DOS) distribution for neutral excitations is narrower than in MeLPPP, the manifold of charge‐transporting localized states is substantially more energetically disordered due to important dipolar disorder contributions.