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International Journal of Photoenergy
Volume 2006, Article ID 90242, 7 pages
http://dx.doi.org/10.1155/IJP/2006/90242

Photophysical properties of self-aggregated porphyrin: semiconductor nanoassemblies

1National Academy of Science, Frantsishak Skaryna Avenue, Minsk 220072, Belarus
2Photonics and Optical Materials Group, Center for Nanostructured Materials and Analytics (NanoMA), Chemnitz University of Technology, Chemnitz 09107, Germany
3Optical Spectroscopy and Molecular Physics Group, Center for Nanostructured Materials and Analytics (NanoMA), Chemnitz University of Technology, Chemnitz 09107, Germany

Received 4 July 2005; Accepted 5 January 2006

Copyright © 2006 E. Zenkevich et al. 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.

Abstract

Colloidal semiconductor nanocrystals from CdSe show photoluminescence quenching via titration with porphyrin derivatives. This quenching is an indication of the formation of nanoassemblies via surface attachment of pyridyl linker groups. As a consequence of the complex formation, dynamic and/or static interactions between QD and porphyrins are induced. Quenching efficiencies depend critically on sample stability, temperature, solvent, and electronic properties of the porphyrins. In order to optimize photoinduced dynamic processes these parameters have to be under control.