Emergence of practical fluorescence in a confined space of nanoporous silica: Significantly enhanced quantum yields of a conjugated molecule

Kosei Hayashi; Yasuto Fujimaki; Kentaro Mishiba; Hiroto Watanabe; Hiroaki Imai

doi:10.1039/d1cc05935a

Emergence of practical fluorescence in a confined space of nanoporous silica: Significantly enhanced quantum yields of a conjugated molecule

Kosei Hayashi, Yasuto Fujimaki, Kentaro Mishiba, Hiroto Watanabe, Hiroaki Imai

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

The fluorescence of benzanthrone, which is a conjugated molecule bearing a carbonyl group, is activated by confinement in a pore with a diameter close to the molecular size. An intense emission originating from the aromatic character π-π∗ transition is achieved through suppression of the nonradiative n-π∗ transition by strong hydrogen bonding between carbonyl groups and silanol groups with a micropore-filling effect in the nanospace.

Original language	English
Pages (from-to)	13150-13153
Number of pages	4
Journal	Chemical Communications
Volume	57
Issue number	97
DOIs	https://doi.org/10.1039/d1cc05935a
Publication status	Published - 2021 Dec 18

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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abstract = "The fluorescence of benzanthrone, which is a conjugated molecule bearing a carbonyl group, is activated by confinement in a pore with a diameter close to the molecular size. An intense emission originating from the aromatic character π-π∗ transition is achieved through suppression of the nonradiative n-π∗ transition by strong hydrogen bonding between carbonyl groups and silanol groups with a micropore-filling effect in the nanospace.",

author = "Kosei Hayashi and Yasuto Fujimaki and Kentaro Mishiba and Hiroto Watanabe and Hiroaki Imai",

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T2 - Significantly enhanced quantum yields of a conjugated molecule

AU - Hayashi, Kosei

AU - Fujimaki, Yasuto

AU - Mishiba, Kentaro

AU - Watanabe, Hiroto

AU - Imai, Hiroaki

N1 - Publisher Copyright: © The Royal Society of Chemistry.

PY - 2021/12/18

Y1 - 2021/12/18

N2 - The fluorescence of benzanthrone, which is a conjugated molecule bearing a carbonyl group, is activated by confinement in a pore with a diameter close to the molecular size. An intense emission originating from the aromatic character π-π∗ transition is achieved through suppression of the nonradiative n-π∗ transition by strong hydrogen bonding between carbonyl groups and silanol groups with a micropore-filling effect in the nanospace.

AB - The fluorescence of benzanthrone, which is a conjugated molecule bearing a carbonyl group, is activated by confinement in a pore with a diameter close to the molecular size. An intense emission originating from the aromatic character π-π∗ transition is achieved through suppression of the nonradiative n-π∗ transition by strong hydrogen bonding between carbonyl groups and silanol groups with a micropore-filling effect in the nanospace.

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JF - Chemical Communications

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Emergence of practical fluorescence in a confined space of nanoporous silica: Significantly enhanced quantum yields of a conjugated molecule

Abstract

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