Assembling a phthalocyanine and perylenediimide donor-acceptor hybrid through a platinum(II) diacetylide linker
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-PDI1. In the ground state, the presence of PtII disrupts the electronic communication between the two electroactive components, as...
| Authors: | , , , , , , |
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| Format: | article |
| Publication Date: | 2013 |
| Country: | España |
| Institution: | IAPH |
| Repository: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Language: | English |
| OAI Identifier: | oai:repositorio.uam.es:10486/751160 |
| Online Access: | https://hdl.handle.net/10486/751160 https://dx.doi.org/10.1002/chem.201301630 |
| Access Level: | Open access |
| Keyword: | Perylenediimides electrochemistry photophysics phthalocyanines platinum acetylide Química |
| Summary: | 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-PDI1. In the ground state, the presence of PtII 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 conjugate2 in terms of charge separation and charge recombination. The insertion of PtII 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. Linked up: The photophysical behavior of a phthalocyanine (Pc)-perylenediimide (PDI) Pc-Pt-PDI donor-acceptor hybrid (see figure), in which a platinum diacetylide linker disrupts electronic communication between the two electroactive components, is compared with that of the corresponding conjugated Pc-PDI array in terms of photoinduced generation of a long-lived charge-separation state |
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