Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives

Renzo P. Zanocco; Silvana Valdebenito; Yasser Gidi; Gerald Zapata-Torres; Else Lemp; Santi Nonell; Antonio L. Zanocco

doi:10.1111/php.12970

Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives

Renzo P. Zanocco, Silvana Valdebenito, Yasser Gidi, Gerald Zapata-Torres, Else Lemp, Santi Nonell, Antonio L. Zanocco

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

2 Scopus citations

Abstract

Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light fluorescence observed in naphthoxazole-quinoline dyads in solvent mixtures including at least a strong hydrogen bonding solvent. The same phenomenon was also studied in inclusion complexes naphthoxazole derivatives—sulfonated-βCD either in aqueous solution as well as in solid phase. A novel mechanism of white molecular fluorescence generation based on solvent-to-fluorophore proton transfer facilitated by ground state hydrogen bonding was characterized. The emission combines both, a blue charge transfer fluorescence emitted by the locally excited singlet state along with a red-shifted emission from a proton transfer complex.

Original language	English (US)
Pages (from-to)	1092-1099
Number of pages	8
Journal	Photochemistry and Photobiology
Volume	94
Issue number	6
DOIs	https://doi.org/10.1111/php.12970
State	Published - Nov 1 2018
Externally published	Yes

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry

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title = "Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives",

abstract = "Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light fluorescence observed in naphthoxazole-quinoline dyads in solvent mixtures including at least a strong hydrogen bonding solvent. The same phenomenon was also studied in inclusion complexes naphthoxazole derivatives—sulfonated-βCD either in aqueous solution as well as in solid phase. A novel mechanism of white molecular fluorescence generation based on solvent-to-fluorophore proton transfer facilitated by ground state hydrogen bonding was characterized. The emission combines both, a blue charge transfer fluorescence emitted by the locally excited singlet state along with a red-shifted emission from a proton transfer complex.",

author = "Zanocco, {Renzo P.} and Silvana Valdebenito and Yasser Gidi and Gerald Zapata-Torres and Else Lemp and Santi Nonell and Zanocco, {Antonio L.}",

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AU - Zanocco, Renzo P.

AU - Valdebenito, Silvana

AU - Gidi, Yasser

AU - Zapata-Torres, Gerald

AU - Lemp, Else

AU - Nonell, Santi

AU - Zanocco, Antonio L.

PY - 2018/11/1

Y1 - 2018/11/1

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AB - Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light fluorescence observed in naphthoxazole-quinoline dyads in solvent mixtures including at least a strong hydrogen bonding solvent. The same phenomenon was also studied in inclusion complexes naphthoxazole derivatives—sulfonated-βCD either in aqueous solution as well as in solid phase. A novel mechanism of white molecular fluorescence generation based on solvent-to-fluorophore proton transfer facilitated by ground state hydrogen bonding was characterized. The emission combines both, a blue charge transfer fluorescence emitted by the locally excited singlet state along with a red-shifted emission from a proton transfer complex.

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Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives

Abstract

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