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Title :Dexter Type Energy Transfer in Meta-Linked Branching Dendrimers
Authors :Akai, Ichiro
Miyanari, Kuniaki
Shimamoto, Tomoshige
Fujii, Atsuhiro
Kimura, Mutsumi
Issue Date :2010
Citation jtitle :Physics Reports of Kumamoto University
vol. :13
no. :2
start page :333
end page :340
Abstract :We investigated rapid energy transfer (ET) processes in dendrimers having meta-linked branching light harvesting antennas. It was found that, at room temperature (RT), the rapid ET occurs efficiently from the antennas to the core and gives rise to intense core-PL bands under the selective excitation on the antenna. However, the ET efficiency impairs at lower temperatures than ~100 K. For understanding these experimental results, we analyzed molecular vibrations and molecular orbitals of a simple model molecule. From these analyses, it was demonstrated that the torsional vibration of the entire antenna subunit is excited sufficiently at RT and the rapid ET in phDGn dendrimer is realized via the π*-conjugated network mediated by thermal activation of this torsional vibration.
Type Local :紀要論文
ISSN :03034070
Publisher :熊本大学
URI :http://hdl.handle.net/2298/18152
Appears in Collections:Bulletin Paper (Science)
Please use this identifier to cite or link to this item: http://hdl.handle.net/2298/18152