FRET-mediated near infrared whispering gallery modes: studies on the relevance of intracavity energy transfer with Q-factors

Osamu Oki; Soh Kushida; Annabel Mikosch; Kota Hatanaka; Youhei Takeda; Satoshi Minakata; Junpei Kuwabara; Takaki Kanbara; Thang D. Dao; Satoshi Ishii; Tadaaki Nagao; Alexander J. C. Kuehne; Felix Deschler; Richard H. Friend; Yohei Yamamoto

doi:10.1039/C7QM00498B

FRET-mediated near infrared whispering gallery modes: studies on the relevance of intracavity energy transfer with Q-factors†

Osamu Oki,^a Soh Kushida,^a Annabel Mikosch,^b Kota Hatanaka,^c Youhei Takeda,

^c Satoshi Minakata,^c Junpei Kuwabara,

^ad Takaki Kanbara,

^ad Thang D. Dao,^e Satoshi Ishii,^e Tadaaki Nagao,^e Alexander J. C. Kuehne,

^b Felix Deschler,^f Richard H. Friend^f and Yohei Yamamoto

*^ad

Author affiliations

* Corresponding authors

^a Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
E-mail: yamamoto@ims.tsukuba.ac.jp

^b DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, 52076 Aachen, Germany

^c Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

^d Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan

^e Nano-System Photonics Group, Nano-System Organization Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, Japan

^f Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB3 0HE Cambridge, UK

Abstract

Near infrared (NIR) optical microsphere resonators are prepared by coassembly of energy-donating and accepting conjugated polymers. In the microspheres, fluorescence resonance energy transfer occurs, leading to sharp and periodic photoluminescence from whispering gallery modes in the NIR region with Q-factors as high as 600.

This article is part of the themed collection: Pi conjugated system bricolage (figuration) toward functional organic molecular systems

Materials Chemistry Frontiers

FRET-mediated near infrared whispering gallery modes: studies on the relevance of intracavity energy transfer with Q-factors†

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FRET-mediated near infrared whispering gallery modes: studies on the relevance of intracavity energy transfer with Q-factors

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