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Red Light-Triggered CO Release from Mn(CO) Using Triplet Sensitization in Polymer Nonwoven Fabrics

Overview
Journal J Am Chem Soc
Specialty Chemistry
Date 2017 Oct 4
PMID 28969423
Citations 10
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Abstract

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(CO) 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 PS* to a photolabile triplet state of Mn(CO), 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(CO) were embedded in electrospun nonwoven fabrics, CO was liberated upon irradiation with low-intensity red light (≤36 mW 635 nm).

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