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Matrix effect on the electrochromism of spirochromics

✍ Scribed by Belkis Ustamehmetoǧlu

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
97 KB
Volume
10
Category
Article
ISSN
1042-7147

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✦ Synopsis

The reduction of six spirocompounds in the absence and presence of polymethylmethacrylate (PMMA) matrix was investigated by in situ spectrochemical measurements. The effect of polymer concentration and chemical structure of spirocompounds on the electrochromism in solution was investigated and an advantage of the presence of the PMMA matrix for two spirooxazine compounds in the bleaching process was reported. The vertical ionization potentials obtained with semiempirical quantum mechanical calculations and those obtained from ! max of the sample solutions in PMMA proved to be consistent with oxidation potentials obtained from cyclic voltammetry experiments. This correlation can be explained by the stability of compounds in the PMMA matrix.

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