Open AccessRed Light-Triggered CO Release from Mn2(CO)10 Using Triplet Sensitization in Polymer Nonwoven Fabrics
Author(s) -
Sven H. C. Askes,
Upendar Reddy Gandra,
Ralf Wyrwa,
Sylvestre Bonnet,
Alexander Schiller
Publication year - 2017
Publication title -
journal of the american chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.115
H-Index - 612
eISSN - 1520-5126
pISSN - 0002-7863
DOI - 10.1021/jacs.7b07427
Subject(s) - chemistry , photochemistry , photosensitizer , irradiation , polymer , excited state , ultraviolet , energy transfer , molecule , solid state , fluorescence , red light , triplet state , ultraviolet light , optoelectronics , optics , organic chemistry , physics , botany , nuclear physics , molecular physics , biology
Applicability of phototherapeutic CO-releasing molecules (photoCORMs) is limited because they are activated by harmful and poorly tissue-penetrating near-ultraviolet light. Here, a strategy is demonstrated to activate classical photoCORM Mn 2 (CO) 10 using red light (635 nm). By mixing in solution a triplet photosensitizer (PS) with the photoCORM and shining red light, energy transfer occurs from triplet excited-state 3 PS* to a photolabile triplet state of Mn 2 (CO) 10 , which, like under near-UV irradiation, led to complete release of carbonyls. Crucially, such "triplet-sensitized CO-release" occurred in solid-state materials: when PS and Mn 2 (CO) 10 were embedded in electrospun nonwoven fabrics, CO was liberated upon irradiation with low-intensity red light (≤36 mW 635 nm).