期刊
INORGANIC CHEMISTRY
卷 56, 期 17, 页码 10268-10280出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.7b01050
关键词
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资金
- European Commission (FP7-REGPOT-2008-1, Project BIOSOLENUTI) [229927]
- IKY
- European Union (European Social Fund-ESF)
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF)-Research Funding Program: Heraklitos II
- US National Science Foundation [1401188]
Sequential photoinduced energy transfer followed by electron transfer leading to the formation of charge separated states in a newly assembled series of supramolecular triads comprised of boron dipyrromethenes (BODIPY or BDP), aluminum porphyrin (AlTPP) and C-60 is demonstrated. In the present strategy, the energy donor (BDP) and electron acceptor (C-60) were axially positioned to the plane of AlTPP via the central metal. The structural integrity of the newly synthesized compounds and self-assembled systems were fully established using spectral, electrochemical and computational methods. Thermodynamic feasibility of energy transfer from (BDP)-B-1* to AlTPP and subsequent electron transfer from (AlTPP)-Al-1* to generate BDP-AlTPP center dot+-C-60(center dot-) charge separated states was derived from free-energy calculations. Occurrence of ultrafast energy transfer from (BDP)-B-1* to AlTPP was established from studies involving steady-state and time-resolved emission, as well as femtosecond transient spectroscopic techniques. The BDP-AlTPP center dot+-C-60(center dot-) charge separated states persisted for several nanoseconds prior returning to the ground state.
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