title: Gold Tris(carboxyphenyl)corroles as Multifunctional Materials: Room Temperature Near-IR Phosphorescence and Applications to Photodynamic Therapy and Dye-Sensitized Solar Cells.
abstract: Two amphiphilic corroles-5,10,15-tris(3-carboxyphenyl)corrole (H3[mTCPC]) and 5,10,15-tris(4-carboxyphenyl)corrole (H3[pTCPC])-and their gold complexes have been synthesized, and their photophysical properties and photovoltaic behavior have been investigated. Like other nonpolar gold corroles, Au[mTCPC] and Au[pTCPC] were both found to exhibit room temperature phosphorescence in deoxygenated solutions with quantum yields of ∼0.3% and triplet lifetimes of ∼75 μs. Both compounds exhibited significant activity as dyes in photodynamic therapy experiments and in dye-sensitized solar cells. Upon irradiation at 435 nm, both Au corroles exhibited significant phototoxicity against AY27 rat bladder cancer cells while the free-base corroles proved inactive. Dye-sensitized solar cells constructed using the free bases H3[mTCPC] and H3[pTCPC] exhibited low efficiencies (≪1%), well under that obtained with 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin, H2[pTCPP] (1.9%, cf. N719 9.5%). Likewise, Au[pTCPC] proved inefficient, with an efficiency of ∼0.2%. By contrast, Au[mTCPC] proved remarkably effective, exhibiting an open-circuit voltage (Voc) of 0.56 V, a short-circuit current of 8.7 mA cm(-2), a fill factor of 0.72, and an efficiency of 3.5%.
authors.affiliation: Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway , N-9037 Tromsø, Norway.
authors.forename: Abraham B
authors.initials: AB
authors.lastname: Alemayehu
authors.affiliation: Department of Chemistry, Portland State University , Portland, Oregon 97207-0751, United States.
authors.forename: Nicholas U
authors.initials: NU
authors.lastname: Day
authors.affiliation: Departments of Biochemistry and Biophysics and Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Tomoyasu
authors.initials: T
authors.lastname: Mani
authors.affiliation: Department of Chemistry, Portland State University , Portland, Oregon 97207-0751, United States.
authors.forename: Alexander B
authors.initials: AB
authors.lastname: Rudine
authors.affiliation: Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway , N-9037 Tromsø, Norway.
authors.forename: Kolle E
authors.initials: KE
authors.lastname: Thomas
authors.affiliation: Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology , N-7491 Trondheim, Norway.
authors.forename: Odrun A
authors.initials: OA
authors.lastname: Gederaas
authors.affiliation: Departments of Biochemistry and Biophysics and Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
authors.forename: Sergei A
authors.initials: SA
authors.lastname: Vinogradov
authors.affiliation: Department of Chemistry, Portland State University , Portland, Oregon 97207-0751, United States.
authors.forename: Carl C
authors.initials: CC
authors.lastname: Wamser
authors.affiliation: Department of Chemistry and Center for Theoretical and Computational Chemistry, UiT - The Arctic University of Norway , N-9037 Tromsø, Norway.
authors.forename: Abhik
authors.initials: A
authors.lastname: Ghosh
keywords: dye-sensitized solar cell; gold corrole; metallocorrole; near-IR phosphorescence; photodynamic therapy; photovoltaic