Soos, ZG and Etemad, S and Galvao, DS and Ramasesha, S (1992) Fluorescence and topological gap of conjugated phenylene polymers. In: Chemical Physics Letters, 194 (4-6). pp. 341-346.
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We propose that strong fluorescence in conjugated polymers requires a dipole-allowed state to be the lowest singlet. HÃ¼ckel theory for para-conjugated phenyl rings yields an extended, topologically one-dimensional ?-system with increased alternation, states localized on each ring, and charge-transfer excitations between them. Exact Pariserï¿½Parrï¿½Pople results and molecular spectra for oligomers support a topological contribution and a lowest dipole-allowed singlet in phenylene polymers.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier science.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||05 Apr 2011 04:58|
|Last Modified:||21 Feb 2012 07:55|
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