Supramolecular Control of Oligothienylenevinylene−Fullerene Interactions:  Evidence for a Ground-State EDA Complex

Autor: McClenaghan, N. D., Grote, Z., Darriet, K., Zimine, M., Williams, R. M., Cola, L. De, Bassani, D. M.
Zdroj: Organic Letters; March 2005, Vol. 7 Issue: 5 p807-810, 4p
Abstrakt: Complementary hydrogen-bonding interactions between a barbituric acid-substituted fullerene derivative (1) and corresponding receptor (2) bearing thienylenevinylene units are used to assemble a 1:1 supramolecular complex (K = 5500 M-1). Due to the close proximity of the redox-active moieties within the assembly, strong ground-state electron−donor−acceptor interactions are observed. Photoinduced electron transfer from electron-rich thienylenevinylene subunits to the fullerene is very fast (ket = 5.5 × 1012 s-1), as determined by fs-time-resolved transient absorption spectroscopy.
Databáze: Supplemental Index