fulltext.study @t Gmail

Photochromic behavior of spironaphthoxazine in metal ion-containing solutions

Paper ID Volume ID Publish Year Pages File Format Full-Text
27386 44018 2011 5 PDF Available
Title
Photochromic behavior of spironaphthoxazine in metal ion-containing solutions
Abstract

The isomerization and metal chelation of spironaphthoxazine (SNO) in ethanol solutions have been investigated by measuring the UV–vis absorption spectra as a function of time. The protonated species of merocyanine (MC), an isomer of SNO, was gradually formed in the solutions containing SNO and aluminum ions in the dark. The proton was provided by the reaction of the aluminum ions with a slight amount of water contained in the ethanol solvent. The protonated species was slowly transformed into the aluminum chelate complex of MC by ligand exchange of the ethanol-solvated aluminum for MC in the dark. UV irradiation promoted the isomerization and chelation without forming the protonated species. The spectroscopic analysis with various compositional ratios of SNO and aluminum ions revealed that one aluminum ion was coordinated to three bidentate MC ligands in the ethanol solution.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The isomerization and metal chelation of spironaphthoxazine in ethanol were studied. ► The protonated species of merocyanine was formed in the AlCl3 solutions in the dark. ► The protonated species was transformed into the Al chelate complex of merocyanine. ► UV irradiation promoted the complex formation without forming the protonated species. ► One aluminum ion was coordinated to three bidentate merocyanine ligands in ethanol.

Keywords
Chelation; Spironaphthoxazine; Aluminum; Photochromism; Spectroscopy
First Page Preview
Photochromic behavior of spironaphthoxazine in metal ion-containing solutions
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 222, Issue 1, 5 July 2011, Pages 236–240
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us