Cation-responsive turn-on fluorescence and absence of heavy atom effects of pyridyl-substituted triarylmethyl radicalsElectronic supplementary information (ESI) available: Detailed synthetic and measurement procedures, ESR spectroscopy, cyclic voltammetry, absorption and emission spectra, and DFT calculations. CCDC 1535850. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7cc08568k

Pyridyl-substituted triarylmethyl radicals exhibited cation-responsive turn-on fluorescence when additional pyridyl rings were incorporated at an appropriate position; the mechanism of fluorescence enhancement is examined. Reduced quenching by internal and external heavy atom effects is proposed as...

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Main Authors Hattori, Yohei, Kimura, Shun, Kusamoto, Tetsuro, Maeda, Hiroaki, Nishihara, Hiroshi
Format Journal Article
LanguageEnglish
Published 16.01.2018
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Abstract Pyridyl-substituted triarylmethyl radicals exhibited cation-responsive turn-on fluorescence when additional pyridyl rings were incorporated at an appropriate position; the mechanism of fluorescence enhancement is examined. Reduced quenching by internal and external heavy atom effects is proposed as a unique property of fluorescent radicals, which can be utilized in different environments to conventional closed-shell fluorescent molecules. Pyridyl-substituted triarylmethyl radicals showed cation-responsive turn-on fluorescence and did not suffer from quenching by internal and external heavy atom effects.
AbstractList Pyridyl-substituted triarylmethyl radicals exhibited cation-responsive turn-on fluorescence when additional pyridyl rings were incorporated at an appropriate position; the mechanism of fluorescence enhancement is examined. Reduced quenching by internal and external heavy atom effects is proposed as a unique property of fluorescent radicals, which can be utilized in different environments to conventional closed-shell fluorescent molecules. Pyridyl-substituted triarylmethyl radicals showed cation-responsive turn-on fluorescence and did not suffer from quenching by internal and external heavy atom effects.
Author Kimura, Shun
Kusamoto, Tetsuro
Maeda, Hiroaki
Nishihara, Hiroshi
Hattori, Yohei
AuthorAffiliation Department of Chemistry
The University of Tokyo
School of Science
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  givenname: Hiroshi
  surname: Nishihara
  fullname: Nishihara, Hiroshi
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Snippet Pyridyl-substituted triarylmethyl radicals exhibited cation-responsive turn-on fluorescence when additional pyridyl rings were incorporated at an appropriate...
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Title Cation-responsive turn-on fluorescence and absence of heavy atom effects of pyridyl-substituted triarylmethyl radicalsElectronic supplementary information (ESI) available: Detailed synthetic and measurement procedures, ESR spectroscopy, cyclic voltammetry, absorption and emission spectra, and DFT calculations. CCDC 1535850. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7cc08568k
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