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Tuning the intramolecular charge transfer emission from deep blue to green in ambipolar systems based on dibenzothiophene S S-dioxide by manipulation of conjugation and strength of the electron donor units.

Moss, K.C. and Bourdakos, K.N. and Bhalla, V. and Kamtekar, KT. and Bryce, M.R. and Fox, M.A. and Vaughan, H.L. and Dias, F.B. and Monkman, A.P. (2010) 'Tuning the intramolecular charge transfer emission from deep blue to green in ambipolar systems based on dibenzothiophene S S-dioxide by manipulation of conjugation and strength of the electron donor units.', Journal of organic chemistry., 75 (20). pp. 6771-6781.

Abstract

The efficient synthesis and photophysical properties of a series of ambipolar donor−acceptor−donor systems is described where the acceptor is dibenzothiophene S,S-dioxide and the donor is fluorene, carbazole, or arylamine. The systems exhibit intramolecular charge transfer (ICT) states (of variable ICT character strengths) leading to fluorescence emission ranging from deep blue to green with moderate to high photoluminescence quantum yields. The emission properties can be effectively tuned by systematically changing the position of substitution on both donor and acceptor units (which affects the extent of conjugation) and the redox potentials of the donor units. The results are supported by cyclic voltammetric data and TD-DFT calculations.

Item Type:Article
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1021/jo100898a
Record Created:10 Jan 2012 12:35
Last Modified:17 Jul 2012 16:35

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