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International Journal of Photoenergy
Volume 7, Issue 3, Pages 121-124

Charge transfer control by substituents: Donor pyrroles and fluoro-anilines

Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, Berlin D-12489, Germany

Copyright © 2005 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Derivatives of N-phenyl pyrrole with a para-donor substituent on the acceptor benzene ring are compared. It is shown that by a suitable increase of the donor strength of the pyrrolo group, CT fluorescence can be achieved even for donor-donor substituted benzenes. On the other hand, introducing fluoro substituents into the acceptor moiety strongly enhances the CT formation tendency, and several new compounds with CT fluorescence even in alkane solvents are presented.