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Journal of Materials Science

, Volume 44, Issue 12, pp 3172–3178 | Cite as

Preparation and properties of alternating 2,7-linked carbazole copolymers with phenylene units with varying number of fluorine substituents

  • David F. Pickup
  • Hunan Yi
  • Ahmed IraqiEmail author
Article

Abstract

New alternating copolymers comprising 2,7-linked-3,6-dimethyl-9-(2-hexyldecy)-9H-carbazole and 1,4-phenylene units (P1), 2,5-difluoro-1,4-phenylene units (P2), and 2,3,5,6-tetrafluoro-1,4-phenylene units (P3) have been prepared using Suzuki cross-coupling conditions. The polymers were characterized by NMR spectroscopy, UV–vis absorption spectroscopy, fluorescence spectroscopy, and their weight-average molecular weights were estimated using gel permeation chromatography. The polymers are thermally stable up to 420 °C and display wide band gaps ranging from 3.16 to 3.2 eV. The polymers are electrolytically stable and emit around 400 nm. A discussion on the effect of the varying degree of fluorine substitution of the phenylene repeat units in polymers P1P3 on their physical properties is presented.

Keywords

Repeat Unit Carbazole Phenylboronic Acid Aromatic Region Tetrabutylammonium Perchlorate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

We would like to acknowledge EPSRC (Grant number GR/S56719/01) for financial support of this work.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of SheffieldSheffieldUK

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