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Reversible photoisomerizations of sulfonephthalein indicator dyes II

โœ Scribed by U.-W. Grummt

Book ID
103896716
Publisher
Elsevier Science
Year
1982
Weight
608 KB
Volume
23
Category
Article
ISSN
0378-4487

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โœฆ Synopsis

Experimental results of a flash photolgsis study of bromo cresol green and thymol blue are presented. They give further support to the recently proposed complex mechanism: A photoinduced rotational isomerization is followed by two consecutive proton transfer reactions and, occasionally, by an intermediate sultone ring closure.

๐Ÿ“œ SIMILAR VOLUMES

Reversible photoisomerizations of sulfon
Reversible photoisomerizations of sulfonephthalein indicator dyes
โœ U.-W Grummt ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science โš– 887 KB

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 di