Coumarinyl(thienyl)thiazoles: novel photochromes with modulated fluorescence.
Novel photochromic 5-(3'-coumarinyl)-4-(3''-thienyl)thiazoles have been synthesized. These compounds display intensive fluorescence emission in the open form A, which is modulated by light. Fluorescence intensity decreases significantly upon irradiation of A with UV-light (lambda<400 nm) due to formation of the cyclic form B. Irradiation of B with visible light (lambda>470 nm) promotes its opening and the recovering of fluorescence. Novel dihetarylethenes undergo photochromic modulation of fluorescence both in solution and in polymeric matrices.
Traven
Valery F
VF
Mendeleev University of Chemical Technology, Moscow 125047, Miusskaya sq., 9, Russian Federation. traven@muctr.ru
Bochkov
Andrei Y
AY
Krayushkin
Mikhail M
MM
Yarovenko
Vladimir N
VN
Nabatov
Boris V
BV
Dolotov
Sergei M
SM
Barachevsky
Valery A
VA
Beletskaya
Irina P
IP