fulltext.study @t Gmail

Spectral and kinetic properties of a red–blue pH-sensitive photochromic spirooxazine

Paper ID Volume ID Publish Year Pages File Format Full-Text
29238 44137 2007 8 PDF Available
Title
Spectral and kinetic properties of a red–blue pH-sensitive photochromic spirooxazine
Abstract

By means of UV/Vis absorption spectroscopy, NMR measurements and kinetic modelling, two spironaphthoxazine compounds bearing 5-OAlk substituent have been investigated in neutral and acidified ethanol media. The kinetics of ring opening/ring closure and the equilibrium constant, the quantum yield of photocoloration, the molar absorption coefficients of the neutral and protonated open forms and pKa values have been determined. A three-species photoreversible transformation between the closed form, the open form and the protonated open form has been observed in slightly acidified solutions.

Keywords
Spironaphthoxazine; Photochromism; Acidichromism; Molecular switch; Kinetic modelling
First Page Preview
Spectral and kinetic properties of a red–blue pH-sensitive photochromic spirooxazine
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 191, Issues 2–3, 25 September 2007, Pages 114–121
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