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Issue 6, 2014
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Exciton recombination dynamics in nanoring cycloparaphenylenes

Taishi Nishihara,a  Yasutomo Segawa,bc  Kenichiro Itamibcd  and  Yoshihiko Kanemitsu*a 
Author affiliations

* Corresponding authors

a Institute for Chemical Research, Kyoto University, Uji, Japan
E-mail: kanemitu@scl.kyoto-u.ac.jp

b Graduate School of Science, Nagoya University, Chikusa, Japan

c JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Japan

d Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Japan

Abstract

We have studied the photoluminescence (PL) properties of [n]cycloparaphenylenes ([n]CPPs), which have simple string structures consisting of varying numbers of benzene rings, using steady-state and time-resolved PL spectroscopy. The PL lifetime decreased dramatically as the number of benzene rings increased, and increased with an increase in temperature. These results reveal that the exciton spreads beyond the benzene rings and that the temperature dependence of the PL lifetime is determined by thermal distribution of the excitons.

Graphical abstract: Exciton recombination dynamics in nanoring cycloparaphenylenes

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Publication details

The article was received on 17 Dec 2013, accepted on 12 Feb 2014 and first published on 31 Mar 2014


Article type: Edge Article
DOI: 10.1039/C3SC53462F
Citation: Chem. Sci., 2014,5, 2293-2296
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    Exciton recombination dynamics in nanoring cycloparaphenylenes

    T. Nishihara, Y. Segawa, K. Itami and Y. Kanemitsu, Chem. Sci., 2014, 5, 2293
    DOI: 10.1039/C3SC53462F

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