Thermally irreversible photochromic dithienylethenes

Autor: M. M. Krayushkin, B. M. Uzhinov, A. Yu. Martynkin, D. L. Dzhavadov, M. A. Kalik, V. L. Ivanov, F. M. Stoyanovich, L. D. Uzhinova, O. Yu. Zolotarskaya
Jazyk: angličtina
Rok vydání: 1999
Předmět:
Zdroj: International Journal of Photoenergy, Vol 1, Iss 3, Pp 183-190 (1999)
Druh dokumentu: article
ISSN: 1110-662X
1110662X
72025417
DOI: 10.1155/S1110662X9900032X
Popis: A lot of previously unknown derivatives of dithienylperfluorocyclopentene (DTPFCP) were synthesized. It was shown that 2,2′-dialkylsubstituted DTPFCP'S are phtochromes. The quantum yields of forward and backward photochemical reactions and spectral parameters of open and cyclic forms of the photochromes synthesized were measured. An attempt to obtain fluorescing phtochromes by means of introduction of benzoxazolyl, benzthiazolyl and 1,2,4-oxadiazolyl moieties in 5 and 5′ positions of DTPFCP failed; these compounds were synthesized but they do not fluoresce.
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