Generation dependent singlet-singlet annihilation within multichromophoric dendrimers studied by polychromatic transient absorption

被引：0
作者：
Sven Jordens
Gino De Belder
Marc Lor
Gerd Schweitzer
Mark Van der Auweraer
Tanja Weil
Andreas Herrmann
Uwe-M. Wiesler
Klaus Müllen
Frans C. De Schryver
机构：
[1] Katholieke Universiteit Leuven,Department of Chemistry
[2] Max-Planck-Institut für Polymerforschung,undefined
来源：
Photochemical & Photobiological Sciences | 2003年 / 2卷
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摘要：
Intramolecular kinetic processes in a series of shape-persistent meta- and para-substituted polyphenylene dendrimers bearing different peryleneimide chromophores at the rim have been investigated using time-resolved polychromatic transient absorption measurements. The influence of the generation number and different substitution patterns upon these processes was revealed by comparing different compounds. In particular, in multichromophoric systems a singlet-singlet annihilation process was detected. The corresponding time constant was dependent on the generation number.
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页码：1118 / 1124
页数：6
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