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Beta-Cyclodextrin and the Anionic alpha-DNBP in DMSO Solution

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: C. Floare, S. Astilean, M. Bogdan and O. Cozar

Editorial: STUDIA Universitatis Babes-Bolyai, Physica, XLIX(3), p.51-55, 2004.

Rezumat:

2-(2′,4′-Dinitrobenzyl)-pyridine is a photochromic molecule presenting a proton transfer reaction from the methylene group to the nitrogen of the pyridine, both in solution and in the crystalline state. Its photochromism in solution depend on the solvent characteristics as: his polarity, his protic character (tendency of liberating a proton), or on his hydroxylic properties (aptitude of creating hydrogen bonds solute-solvent). In this report, the disappearing of the stable anion of α-DNBP in dimethyl sulfoxyde solution is investigated at the addition of β-cyclodextrin. This comportment is compared with the similar effect observed in the presence of water.

Cuvinte cheie: α-DNBP anion, DMSO, β-cyclodextrin // Beta-Cyclodextrin, alpha-DNBP

URL: http://www.itim-cj.ro/~cfloare/publ/DNBPdmso.pdf