Regensburg 2007 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 27: INTERNAL SYMPOSIUM Optical Spectroscopy II
CPP 27.6: Vortrag
Donnerstag, 29. März 2007, 16:15–16:30, H40
Resonant Energy Transfer Monitoring Self-Assembly of Functionalized Dye Molecules on Semiconductor Nanocrystals — •Thomas Blaudeck1,2, Mohamed Abdel-Mottaleb2, Eduard Zenkevich3, Alexander Shulga3, and Christian von Borczyskowski2 — 1POM, TU Chemnitz, 09107 Chemnitz, Germany — 2OSMP, TU Chemnitz, 09107 Chemnitz, Germany — 3Institute of Molecular and Atomic Physics, National Academy of Science, Minsk 220072, Belarus
Targeted generation of multichromophoric aggregates comprising inorganic (NCs) and organic (dye molecules) parts encounters growing interest in biology, medicine, and molecular electronics. We report on the properties of such aggregates designed from pyridyl-substituted free-base porphyrin dye molecules and CdSe NCs, formed via spontaneous self-assembly and monitored by steady-state and time-resolved spectroscopy. The results clearly identify an excitation energy transfer from the NC to the dye molecules and are discussed discussed in the framework of Stern-Volmer quenching and Förster resonant energy transfer (FRET) theory. The results are generalized on the self-assembling formation of antenna arrays comprising NCs and other classes of molecules.