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Reversible photoisomerizations of sulfonephthalein indicator dyes

โœ Scribed by U.-W Grummt

Book ID
103896619
Publisher
Elsevier Science
Year
1980
Weight
887 KB
Volume
18
Category
Article
ISSN
0378-4487

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โœฆ Synopsis

The monoanion of bromothymol blue in organic solvents shows reversible spectral changes upon flash photolysis which is interpreted by a photoinduced rotational isomerization. Dependent on the concentration and strength of the base forming the counterion the complex thermal relaxation proceeds via different pathways which involve two consecutive proton transfer processes and an intermediate sultone ring closure.

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