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Proceedings Paper

Excited state processes in individual multichromophoric systems
Author(s): Johan Hofkens; Tom Vosch; Mircea Cotlet; Satoshi Habuchi; Koen Van Der Biest; Klaus Mullen; Gunter Dirix; Jan Michiels; Jos Vanderleyden; Markus Sauer; Frans C. De Schryver
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Paper Abstract

Multichromophoric systems play a key role in biological systems (light harvesting antenna complexes, fluorescent proteins...) and are equally important in material science applications (e.g. light emitting devices (LED) based on conjugated polymers). Our approach to get insight in the excited state processes of such systems is to make use of dendrimers labeled with photostable perylene dyes. Dendrimers synthesis indeed allows changing the number, relative position and orientation of attached chromophores in a controlled way. In the present contribution, excited state processes such as energy hopping, singlet-singlet annihilation, singlet-triplet annihilation are identified in individual tetrachromophoric dendrimers immobilized in a polymer matrix. Similar processes are then demonstrated to occur as well in immobilized tetramers of a red fluorescent protein from a coral of the Discosoma genus (DsRed).

Paper Details

Date Published: 19 June 2003
PDF: 10 pages
Proc. SPIE 4962, Manipulation and Analysis of Biomolecules, Cells, and Tissues, (19 June 2003); doi: 10.1117/12.488209
Show Author Affiliations
Johan Hofkens, Katholieke Univ. Leuven (Belgium)
Tom Vosch, Katholieke Univ. Leuven (Belgium)
Mircea Cotlet, Katholieke Univ. Leuven (Belgium)
Satoshi Habuchi, Katholieke Univ. Leuven (Belgium)
Koen Van Der Biest, Katholieke Univ. Leuven (Belgium)
Klaus Mullen, Max-Planck-Institut fur Polymerforschung (Germany)
Gunter Dirix, Ctr. for Microbial and Plant Genetics (Belgium)
Jan Michiels, Ctr. for Microbial and Plant Genetics (Belgium)
Jos Vanderleyden, Ctr. for Microbial and Plant Genetics (Belgium)
Markus Sauer, Ruprecht-Karls-Univ. Heidelberg (Germany)
Frans C. De Schryver, Katholieke Univ. Leuven (Belgium)


Published in SPIE Proceedings Vol. 4962:
Manipulation and Analysis of Biomolecules, Cells, and Tissues
Dan V. Nicolau; Joerg Enderlein; Robert C. Leif; Daniel L. Farkas, Editor(s)

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