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van Beek R, Zoombelt AP, Jenneskens LW, et al. Side chain mediated electronic contact between a tetrahydro-4H-thiopyran-4-ylidene-appended polythiophene and CdTe quantum dots. Chemistry. 2006;12(31):8075-83doi: 10.1002/chem.200501480.
van Beek, R., Zoombelt, A. P., Jenneskens, L. W., van Walree, C. A., de Mello Donegá, C., Veldman, D., & Janssen, R. A. (2006). Side chain mediated electronic contact between a tetrahydro-4H-thiopyran-4-ylidene-appended polythiophene and CdTe quantum dots. Chemistry (Weinheim an der Bergstrasse, Germany), 12(31), 8075-83. https://doi.org/10.1002/chem.200501480
van Beek, Rick, et al. "Side chain mediated electronic contact between a tetrahydro-4H-thiopyran-4-ylidene-appended polythiophene and CdTe quantum dots." Chemistry (Weinheim an der Bergstrasse, Germany) vol. 12,31 (2006): 8075-83. doi: https://doi.org/10.1002/chem.200501480
van Beek R, Zoombelt AP, Jenneskens LW, van Walree CA, de Mello Donegá C, Veldman D, Janssen RA. Side chain mediated electronic contact between a tetrahydro-4H-thiopyran-4-ylidene-appended polythiophene and CdTe quantum dots. Chemistry. 2006 Oct 25;12(31):8075-83. doi: 10.1002/chem.200501480. PMID: 16900542.
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Chemistry. 2006 Oct 25;12(31):8075-83. doi: 10.1002/chem.200501480.

Side chain mediated electronic contact between a tetrahydro-4H-thiopyran-4-ylidene-appended polythiophene and CdTe quantum dots.

Chemistry (Weinheim an der Bergstrasse, Germany)

Rick van Beek, Arjan P Zoombelt, Leonardus W Jenneskens, Cornelis A van Walree, Celso de Mello Donegá, Dirk Veldman, René A J Janssen

Affiliations

  1. Debye Institute, Organic Chemistry and Catalysis, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.

PMID: 16900542 DOI: 10.1002/chem.200501480

Abstract

The properties of a mixed CdTe quantum dot/tetrahydro-4H-thiopyran-4-ylidene-functionalized polythiophene system are reported. This system was prepared by exposing trioctylphosphine (TOP)-capped CdTe quantum dots to the polythiophene in solution. Strong fluorescence emission quenching and shortening of the fluorescence emission lifetimes of both the polythiophene and the quantum dots occur when they are mixed, indicating the occurrence of photoinduced charge separation. Photoinduced absorption spectroscopy reveals a considerable decrease in the population of the polythiophene triplet excited state in the mixed system. These results demonstrate that between the quantum dots and the polythiophene there is both physical and electronic contact, which is mediated by the tetrahydro-4H-thiopyran-4-ylidene side chains.

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