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          Institute: MPI für Polymerforschung     Collection: MPI Polymerforschung     Display Documents



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ID: 51067.0, MPI für Polymerforschung / MPI Polymerforschung
Frequency selective excitation of single chromophores within shape-persistent multichromophoric dendrimers
Authors:Christ, T.; Kulzer, F.; Weil, T.; Müllen, Klaus; Basche, T.
Language:English
Date of Publication (YYYY-MM-DD):2003-05-06
Title of Journal:Chemical Physics Letters
Journal Abbrev.:Chem. Phys. Lett.
Volume:372
Issue / Number:5-6
Start Page:878
End Page:885
Review Status:not specified
Audience:Not Specified
Abstract / Description:Isolated multichromophoric dendrimers containing four perylenemonoimide chromophores were investigated in a confocal microscope which allowed imaging of the same set of dendrimers over a wide temperature range. Emission spectra at low temperature (2 K) reveal narrow zero-phonon lines although the electron-phonon coupling is not negligible. By using fluorescence excitation spectroscopy, the sharp purely electronic zero-phonon lines of single chromophores within a single multichromophoric unit could be isolated in the frequency domain. Selective excitation into a higher energy chromophoric site is followed by rapid directional energy transfer into the lowest energy site from which emission then occurs. (C) 2003 Elsevier Science B.V. All rights reserved.
Comment of the Author/Creator:Date: 2003, MAY 6
External Publication Status:published
Document Type:Article
Affiliations:MPI für Polymerforschung
External Affiliations:Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany.
Identifiers:ISI:000182795100045 [ID No:1]
ISSN:0009-2614 [ID No:2]
LOCALID:P-03-270
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