WANG, Mengfei; MURATA, Kei; KOIKE, Yosuke; JONUSAUSKAS, Gediminas; FURET, Amaury; BASSANI, Dario; SAITO, Daisuke; KATO, Masako; SHIMODA, Yuushi; MIYATA, Kiyoshi; ONDA, Ken; ISHII, Kazuyuki

doi:10.1002/chem.202200716

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WANG, Mengfei
Institute of Industrial Science [Tokyo] [IIS]

MURATA, Kei
Institute of Industrial Science [Tokyo] [IIS]

KOIKE, Yosuke
Institute of Industrial Science [Tokyo] [IIS]

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Chemistry - A European Journal. 2022, vol. 28, n° 48, p. e202200716

Wiley-VCH Verlag

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A complex comprising one [Re(CO)3] + unit and a phthalocyanine (Pc) ligand (Re1Pc) is shown to function as a photoinduced CO-releasing molecule (photoCORM) in the presence of O2 and a coordinative solvent under irradiation with red light, which can deeply penetrate living tissues. Transient absorption spectroscopic measurements indicate very short excited-state lifetimes and ultrafast intersystem crossing for Re1Pc and Re2Pc, which contains two [Re(CO)3] + units. The excited-state properties are ascribed to efficient spin-orbit coupling and large Franck-Condon factors originating from the complexes' distorted structures, i.e., unsymmetric coordination of [Re(CO)3] + unit(s), one of which was confirmed via single-crystal Xray analysis of a symmetrically-substituted Pc with two [Re(CO)3] + units. Re1Pc represents a promising red light-driven photoCORM that can be applied in biological environments or therapeutic applications.< Réduire

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A Red Light-Driven CO-releasing Complex: Photochemical and Photophysical Properties of Highly-Distorted Tricarbonyl Rhenium Phthalocyanines

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