Single molecule spectroscopy of multichromophoric assemblies

Author

Basche, T. ; Christ, T. ; Kulzer, F. ; Herrmann, A. ; Reuther, E. ; Mullen, Klaus

Author_Institution

Inst. fur Physikalische Chem., Johannes Gutenberg Univ., Mainz, Germany

fYear

2003

fDate

6-6 June 2003

Abstract

We have investigated multichromophoric assemblies composed of a variable number of chromophores by single molecule spectroscopy. Specific spectral signatures have allowed to distinguish at the single molecule level between molecular dimers representing strong and weak electronic dipole-dipole coupling. By using fluorescence excitation spectroscopy at low temperature, the sharp purely electronic zero-phonon lines of single chromophores within a single dendrimer containing four chromophores could be isolated in the frequency domain.

Keywords

excited states; fluorescence; organic compounds; phonon spectra; photoluminescence; visible spectra; chromophores; dendrimer; electronic dipole-dipole coupling; electronic zero-phonon lines; fluorescence excitation spectroscopy; molecular dimers; multichromophoric assemblies; single molecule spectroscopy; spectral signatures; Absorption; Aggregates; Assembly; Charge carrier processes; Energy exchange; Fluorescence; Polymers; Spectroscopy; Temperature; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-749-0

Type

conf

DOI

10.1109/QELS.2003.237851

Filename

1276090