Novel non-covalent supramolecular systems based on zinc(II) bis(dipyrromethenate)s with fullerenes

Abstract

© 2018 Elsevier B.V. This paper presents the results of UV/vis, fluorescence, FT-IR, DOSY, and DFT study of a novel non-covalent supramolecular systems based on zinc(II) bis(dipyrromethenate)s ([Zn2L2]) with C60. It was found that zinc(II) bis(dipyrromethenate) forms stable supramolecular π-π-complexes ([Zn2L2(C60)4]) with C60. DFT calculations revealed stable complexation between [Zn2L2] and C60. The [Zn2L2(C60)4] LUMO energy levels are predominantly spread on the C60 unit and the HOMO energy levels are mainly spread on the [Zn2L2]. The photoinduced electron transfer testing by the substantial fluorescence quenching of the [Zn2L2] by non-covalent bonded C60 gives the positive result that shows prospects of the studying [Zn2L2(C60)4] as the active layers in solar energy conversion devices.