2024-03-29T06:17:08Z
https://soar-ir.repo.nii.ac.jp/oai
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2022-12-14T04:06:57Z
1221:1222
Chelation ability of spironaphthoxazine with metal ions in silica gel
Nishikiori, Hiromasa
Teshima, Katsuya
Fujii, Tsuneo
Copyright© 2012 Royal Society of Chemistry. Photochem. Photobiol. Sci., 2012,11, 1164-1173 https://doi.org/10.1039/c2pp05345d - Reproduced by permission of The Royal Society of Chemistry
Spironaphthoxazine (SNO) and three metal ions, Mg2+, Zn2+, and Al3+, were dispersed in silica gels by the sol-gel method. The chelation ability of SNO with the metal ions in silica gels was investigated by measuring the fluorescence spectra and was compared to that of 8-hydroxyquinoline (8-HQ) in ethanol and silica gels. A merocyanine-type isomer photoderived from SNO as well as 8-HQ easily formed complexes of the metal ions in the order of Al3+, Zn2+, and Mg2+ because the coordination ability of the metal ions to such ligands depended on their electron affinity. The changes in the fluorescence spectra of the silica gel samples during light irradiation were also investigated. The relative band intensity due to the intermediate species between the original SNO and the merocyanine species decreased and that of the complex increased with the UV irradiation time. The reverse process was observed during visible irradiation. The UV irradiation effects on the chelation of SNO and its photochromic property also depended on the electron affinity of the metal ions.
Article
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES. 11(7):1164-1173 (2012)
ROYAL SOC CHEMISTRY
2012-01
eng
journal article
AM
http://hdl.handle.net/10091/17210
https://soar-ir.repo.nii.ac.jp/records/12347
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=search&DB=pubmed&term=22407671
22407671
https://doi.org/10.1039/c2pp05345d
10.1039/c2pp05345d
1474-905X
AA11791060
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
11
7
1164
1173
https://soar-ir.repo.nii.ac.jp/record/12347/files/Chelation_ability_spironaphthoxazine_metal_ions.pdf
application/pdf
3.8 MB
2015-09-28