Enhanced quantum yield of fluorophores in confined spaces of supermicroporous silicas

Shumpei Ogawa, Takuya Wakayama, Hiroto Watanabe, Kosei Hayashi, Shuhei Ogata, Yuya Oaki, Miki Hasegawa, Hiroaki Imai

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The optical properties of polycyclic aromatic hydrocarbon fluorophores, such as pyrene and perylene, are controlled by confined spaces of meso- and supermicropores in a silica matrix. The quantum yield of fluorescence from monodispersed pyrene and perylene increases with limitation of the excimer formation in 1 nm supermicropores. When the pore diameter is close to the molecular size, solid-state fluorescence having a high quantum yield is achieved via the fluorophores in the confined spaces by suppressing the aggregation, the interaction with charge-transfer sites and the stabilization of the excited state.

Original languageEnglish
Pages (from-to)87-91
Number of pages5
JournalBulletin of the Chemical Society of Japan
Issue number1
Publication statusPublished - 2018

ASJC Scopus subject areas

  • Chemistry(all)


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