Extended conjugation in poly(triarylamine)s: synthesis, structure and impact on field-effect mobility

Polytriarylamines with extended fused backbones are accessible by the coupling of anilines with dibromoarenes based on substituted indenofluorenes, diindenofluorenes, carbazoles and indolocarbazoles. The optical and electrochemical properties of these polymers show an increase in the HOMO energy lev...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2014-08, Vol.2 (32), p.6520-6528
Main Authors: Sprick, Reiner Sebastian, Hoyos, Mario, Wrackmeyer, Marion Sofia, Sheridan Parry, Adam Valentine, Grace, Iain Mark, Lambert, Colin, Navarro, Oscar, Turner, Michael Lewis
Format: Article
Language:English
Subjects:
Accessibility
Chemical compounds
Conjugation
Mathematical models
Oligomers
Optical properties
Polymers
Segments
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Summary:Polytriarylamines with extended fused backbones are accessible by the coupling of anilines with dibromoarenes based on substituted indenofluorenes, diindenofluorenes, carbazoles and indolocarbazoles. The optical and electrochemical properties of these polymers show an increase in the HOMO energy levels and the onset of absorption on extending the length of the fused ring segment. The polymer derived from the indenofluorene unit shows the highest reported performance for a polytriarylamine in an OFET and this observation can be rationalized by DFT calculations of model oligomers that show higher calculated reorganization energies for the more extended diindenofluorene units.
ISSN:2050-7526
2050-7534
DOI:10.1039/C4TC00871E