Photoreduction of Dyes in Rigid Media. I. Triphenylmethane Dyes 1
β Scribed by Oster, Gerald; Joussot-Dubien, Jacques; Broyde, Barret
- Book ID
- 121417362
- Publisher
- American Chemical Society
- Year
- 1959
- Tongue
- English
- Weight
- 466 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0002-7863
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Electric linear dichroism (ELD) spectra of two cationic triphenylmethane dyes, crystal violet (CV) and malachite green (MG), bound to sodium montmorillonite K10 (MK-10) were studied at 20 degrees C in aqueous media at two mixing ratios, D/S, of 0.10 and 0.24 in the 700- to 400-nm wavelength region a
The amber Aberchrome 540 dye [(E) 300 nm) undergoes conrotatory ring-closure to give a red dye (B) [7,7a-dihydro-2,4,7,7,7a-pentamethylbenzo [b] furan-5,6dicarboxylic anhydride]. The red form B may be reversed to form A in the photodecolouration reaction using visible light. The kinetics of the phot