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  • Title: Assembling a phthalocyanine and perylenediimide donor-acceptor hybrid through a platinum(II) diacetylide linker.
    Author: Jiménez ÁJ, Sekita M, Caballero E, Marcos ML, Rodríguez-Morgade MS, Guldi DM, Torres T.
    Journal: Chemistry; 2013 Oct 18; 19(43):14506-14. PubMed ID: 24038280.
    Abstract:
    In a novel electron-donor-acceptor conjugate, phthalocyanine (Pc) and perylenediimide (PDI) are connected through a trans-platinum(II) diacetylide linker to yield Pc-Pt-PDI 1. In the ground state, the presence of Pt(II) disrupts the electronic communication between the two electroactive components, as revealed by UV/Vis spectroscopy and electrochemical studies. The photophysical behavior of 1 is compared with that of the corresponding Pc-PDI electron-donor-acceptor conjugate 2 in terms of charge separation and charge recombination. The insertion of Pt(II) between Pc and PDI impacts the results in a longer-lived Pc(.) (+) /PDI(.) (-) radical ion-pair state. In addition, the intermediately formed Pc triplet excited state is formed with higher quantum yields in 1 than in 2.
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