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Influence of Structural and Rotational Isomerism on the Triplet Blinking of Individual Dendrimer Molecules
Author(s) -
Vosch Tom,
Hofkens Johan,
Cotlet Mircea,
Köhn Fabian,
Fujiwara Hideki,
Gronheid Roel,
Van Der Biest Koen,
Weil Tanja,
Herrmann Andreas,
Müllen Klaus,
Mukamel Shaul,
Van der Auweraer Mark,
De Schryver Frans C.
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20011217)40:24<4643::aid-anie4643>3.0.co;2-n
Subject(s) - chromophore , intersystem crossing , dendrimer , molecule , chemistry , excimer , fluorescence , photochemistry , chemical physics , excited state , atomic physics , organic chemistry , physics , optics , singlet state
Collective on/off behavior and different spectral behavior has been identified for individual molecules of different isomers (see for example the fluorescence spectra for two isomers as a function of time) with three perylenedicarboximide chromophores. In 8 % of the dendrimer molecules, the chromophores interact to form an excimer‐like structure which possess a higher rate of intersystem crossing than the rest of the molecules. This is the first time that this phenomenon has been proven experimentally at the single‐molecule level.