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A subphthalocyanine-pyrene dyad: Electron transfer and singlet oxygen generation

Title
A subphthalocyanine-pyrene dyad: Electron transfer and singlet oxygen generation
Authors
El-Khouly M.E.El-Refaey A.Nam W.Fukuzumi S.Göktuǧ Ö.Durmuş M.
Ewha Authors
남원우Shunichi Fukuzumi
SCOPUS Author ID
남원우scopus; Shunichi Fukuzumiscopusscopus
Issue Date
2017
Journal Title
Photochemical and Photobiological Sciences
ISSN
1474-905XJCR Link
Citation
Photochemical and Photobiological Sciences vol. 16, no. 10, pp. 1512 - 1518
Publisher
Royal Society of Chemistry
Indexed
SCIE; SCOPUS; KCI WOS scopus
Document Type
Article
Abstract
A light harvesting subphthalocyanine-pyrene dyad has been synthesized and characterized by linking pyrene (Py) with subphthalocyanine (SubPc) at its axial position with the B-O bond through the para position of the benzene group. Upon photoexcitation at the pyrene unit of the dyad, an efficient electron transfer from the singlet-excited state of Py to SubPc was observed. The electron transfer features were also observed by exciting the SubPc entity, but with slower rates (∼108 s-1). From the electrochemical measurements, the negative driving forces for charge separation via both the singlet states of Py and SubPc in the polar solvents indicate that the electron transfer is thermodynamically feasible. Interestingly, the examined compounds showed relatively high efficiency for producing the singlet oxygen (ΦΔ = ∼0.70). The collected data suggested the usefulness of the examined subphthalocyanine-pyrene dyad as a model of light harvesting system, as well as a sensitizer for photodynamic therapy. © The Royal Society of Chemistry and Owner Societies 2017.
DOI
10.1039/c7pp00166e
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자연과학대학 > 화학·나노과학전공 > Journal papers
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