title: Photoinduced charge separation in an oligophenylenevinylene-based Hamilton-type receptor supramolecularly associating two C60-barbiturate guests.
abstract: The supramolecular association of an oligophenylene-vinylene (OPV)-based Hamilton-type receptor 1 with C60-barbiturate 2, via six hydrogen bonds per OPV terminal, forming C60/OPV/C60 complex 3 is presented. The particular host-guest motif expressed in 3 ensures strong interactions between the discrete components of the complex based on the multiple hydrogen bonding interactions as conveyed by an association constant greater than 10(5) M(-1). Furthermore, femto- and nano-second transient absorption studies disclose photoinduced charge separation from (1)OPV* to C60 within 9.4 ps. The observed ultrafast charge separation phenomena in the C60/OPV/C60 complex open up wide avenues toward the efficient construction of new materials for optoelectronic and solar cell applications.
authors.affiliation: Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Contantinou Avenue, Athens 11635, Greece. tagmatar@eie.gr.
authors.forename: G
authors.initials: G
authors.lastname: Pagona
authors.affiliation: Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Contantinou Avenue, Athens 11635, Greece. tagmatar@eie.gr.
authors.forename: A
authors.initials: A
authors.lastname: Stergiou
authors.affiliation: Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA. Francis.DSouza@unt.edu.
authors.forename: H B
authors.initials: HB
authors.lastname: Gobeze
authors.affiliation: Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Contantinou Avenue, Athens 11635, Greece. tagmatar@eie.gr.
authors.forename: G
authors.initials: G
authors.lastname: Rotas
authors.affiliation: Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA. Francis.DSouza@unt.edu.
authors.forename: F
authors.initials: F
authors.lastname: D'Souza
authors.affiliation: Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Contantinou Avenue, Athens 11635, Greece. tagmatar@eie.gr.
authors.forename: N
authors.initials: N
authors.lastname: Tagmatarchis