Photoinduced charge separation in an oligophenylenevinylene-based Hamilton-type receptor supramolecularly associating two C60-barbiturate guests

G Pagona; A Stergiou; H B Gobeze; G Rotas; F D'Souza; N Tagmatarchis

doi:10.1039/c5cp05657h

Photoinduced charge separation in an oligophenylenevinylene-based Hamilton-type receptor supramolecularly associating two C60-barbiturate guests

Phys Chem Chem Phys. 2016 Jan 14;18(2):811-7. doi: 10.1039/c5cp05657h.

Authors

G Pagona¹, A Stergiou¹, H B Gobeze², G Rotas¹, F D'Souza², N Tagmatarchis¹

Affiliations

¹ Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Contantinou Avenue, Athens 11635, Greece. tagmatar@eie.gr.
² Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA. Francis.DSouza@unt.edu.

PMID: 26628285
DOI: 10.1039/c5cp05657h

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.