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Spiropyran-Isoquinoline Dyad as a Dual Chemosensor for Co(II) and In(III) Detection.
- Source :
- Molecules; Sep2017, Vol. 22 Issue 9, p1569, 13p
- Publication Year :
- 2017
-
Abstract
- Spiropyran derivatives have been studied as light-regulated chemosensors for a variety of metal cations and anions, but there is little research on chemosensors that simultaneously detect multiple metal cations. In this study, a spiropyran derivative with isoquinoline, SP-IQ, was prepared and it functions investigated as a light-regulated sensor for both Co<superscript>2+</superscript> and In<superscript>3+</superscript> cations. A colorless nonfluorescent SP-IQ converts to a pink-colored fluorescent MC-IQ by UV irradiation or standing in the dark, and MC-IQ returns to SP-IQ with visible light. Upon UV irradiation with the Co<superscript>2+</superscript> cation for 7 min, the stronger absorption at 540 nm and the similar fluorescence intensity at 640 nm are observed, compared to when no metal cation is added, due to the formation of a Co<superscript>2+</superscript> complex with pink color and pink fluorescence. When placed in the dark with the In<superscript>3+</superscript> cation for 7 h, the colorless solution of SP-IQ changes to the In<superscript>3+</superscript> complex with yellow color and pink fluorescence, which shows strong absorption at 410 nm and strong fluorescence at 640 nm. Selective detection of the Co<superscript>2+</superscript> cation with UV irradiation and the In<superscript>3+</superscript> cation in the dark could be possible with SP-IQ by both absorption and fluorescence spectroscopy or by the naked eye. [ABSTRACT FROM AUTHOR]
- Subjects :
- SPIROPYRANS
CHEMORECEPTORS
DYADS
IRRADIATION
ISOQUINOLINE
Subjects
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 22
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 125321952
- Full Text :
- https://doi.org/10.3390/molecules22091569