Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Case Study for Artificial Photosynthesis: Noncovalent Interactions between C60-Dipyridyl and Zinc Porphyrin Dimer
Δημιουργός/Συγγραφέας:	Stangel C. Charisiadis A. Zervaki G.E. Nikolaou V. Charalambidis G. Kahnt A. Rotas G. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Coutsolelos A.G.
Εκδότης:	American Chemical Society
Ημερομηνία:	2017
Γλώσσα:	Αγγλικά
ISSN:	1932-7447
DOI:	10.1021/acs.jpcc.6b11863
Περίληψη:	In this study, a new modified C60 derivative with an oPE/oPPV conjugated bridge bearing two pyridyl groups has been used in combination with a flexible porphyrin dimer (ZnP2) to construct an electron donor/acceptor hybrid (C60-dipyr·ZnP2). This hybrid is based on metal to ligand coordination between the zinc centers of the porphyrin dimer and the two pyridyl groups that oPE/oPPV linker bears. In order to investigate the interactions between the electron donor and acceptor entities, both in the ground state and in the excited states, comprehensive photophysical assays have been carried out. In particular, both absorption and fluorescence titrations provided evidence for strong interactions between the electron donor and the electron acceptor within the hybrid. A binding constant (Kass) in the order of 5.0 × 105 M-1 has been derived. Furthermore, transient absorption measurements revealed intramolecular electron-transfer from the photoexcited porphyrin dimer (ZnP2) to the fullerene derivative (C60-dipyr), leading to a long-lived charge-separated state with a lifetime of up to 1525 ps. (Figure Presented).
Τίτλος πηγής δημοσίευσης:	Journal of Physical Chemistry C
Τόμος/Κεφάλαιο:	121
Τεύχος:	9
Σελίδες:	4850-4858
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2017 American Chemical Society.
Σημειώσεις:	Seventh Framework Programme, FP7: 229927, FP7-REGPOT-2008-1; Deutsche Forschungsgemeinschaft, DFG: KA 3491/2-1; University of Crete, UoC; European Social Fund, ESF This work was supported by the European Commission's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 229927 (FP7-REGPOT-2008-1, Project BIOSOLENUTI) and Special Research Account of the University of Crete, implemented under the "ARISTEIA II" Action of the "OPERATIONAL PROGRAMME EDUCATION AND LIFELONG LEARNING" and is cofunded by the European Social Fund (ESF) and National Resources; IKY fellowships of excellence for postgraduate studies in Greece, Research programs of excellence IKY-Siemens. Funding from the Deutsche Forschungsgemeinschaft (DFG) via Grant KA 3491/2-1.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο