Arylamino‐functionalized fluorene‐ and carbazole‐based copolymers: Color‐tuning their CdTe nanocrystal composites from red to white |
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| Authors: | Ioannis Kanelidis Yi Ren Vladimir Lesnyak Jan‐Christoph Gasse Ronald Frahm Alexander Eychmüller Elisabeth Holder |
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| Affiliation: | 1. Functional Polymers Group and Institute of Polymer Technology, University of Wuppertal, Gau?strasse 20, D‐42097 Wuppertal, Germany;2. Physical Chemistry/Electrochemistry, TU Dresden, Bergstrasse 66b, D‐01062 Dresden, Germany;3. Department of Physics, University of Wuppertal, Gau?strasse 20, D‐42097 Wuppertal, Germany |
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| Abstract: | Four alternating arylamino‐functionalized copolymers were synthesized in a Suzuki copolymerization applying 4, 4′‐(2,7‐dibromo‐9H‐fluorene‐9,9‐diyl)dianiline, 4,4′‐(2,7‐dibromo‐9H‐fluorene‐9,9‐diyl)bis(N,N‐diphenylaniline), 4‐(3,6‐dibromo‐9H‐ carbazol‐9‐yl)aniline and 4‐(3,6‐dibromo‐9H‐carbazol‐9‐yl)‐N,N‐diphenylaniline in combination with 2,2′‐(9,9‐dioctyl‐9H‐fluorene‐2,7‐diyl)bis(1,3,2‐dioxaborinane). The resulting novel alternating copolymers were fully characterized. The copolymers revealed blue light emission and wide optical bandgaps of at least 2.93 eV for the fluorene‐based and 3.07 eV for the carbazole‐based polymers. The amino‐functions allow to tie semiconducting CdTe nanocrystals (NCs) and to synthesize a series of composites with CdTe NCs. Moreover, tuning the emission color over a wide range by tying these CdTe NCs results in a facile preparation of organic–inorganic semiconductor composites with emission colors “à la carte.” © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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| Keywords: | conjugated polymers fluorescence nanocrystals synthesis |
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