Abstract
Four new Mn(I)–carbonyl complexes of general formula, [Mn(L)(CO)3] (1–4) where L = 2-(benzo[d]thiazol-2-yl)phenol (L1), 2-(benzo[d]thiazol-2-yl)-4,6-di-tert-butylphenol (L2), 2-(2-hydroxyphenyl)-3H-anthra[1,2-d]imidazole-6,11-dione (L3) and 2-(3,5-di-tert-butyl-2-hydroxyphenyl)-3H-anthra[1,2-d]imidazole-6,11-dione (L4) rapidly release CO cooperatively on activation with visible light accompanied by a visual change in luminescence properties of the complexes allowing us to track photo-activated CO release in HeLa cells. CO-induced photocytotoxicity by the complexes was also studied in HeLa cells. Photo-activated CO release and mechanism was spectroscopically and theoretically probed. Overall, Mn(I)–carbonyls with theranostics properties are potentially emerged as the next-generation photo-theranostics.
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