Highly conjugated donor-acceptor dyad based on monotetrathiafulvalene covalently attached to a magnesium norphthalocyanine unit

Publication date: Available online 13 February 2020Source: Journal of Molecular StructureAuthor(s): Ruibin Hou, Li Wang, Fuzhi Wei, Yan Xia, Dongfeng LiAbstractA novel highly conjugated donor–acceptor dyad composed of a tetrathiafulvalene (TTF) moiety covalently attached to a magnesium norphthalocyanine (NPc) unit (1) has been synthesized and full characterized. Ultraviolet–visible spectroscopy and electron paramagnetic resonance data reveal that 1 forms an electron transfer complex with 2,3,5,6-tetrafluoro-7,7,8,8-tetra-cyanoquinodimethane (F4TCNQ). Detailed electrochemical investigations show one irreversible one-electron oxidation wave, two quasi-reversible one-electron oxidation waves, and two irreversible one-electron reduction waves, indicating that 1 is a good π-electron donor. Compound 1 shows clear intramolecular charge transfer (ICT) interactions from the tetrathiafulvalene fragments to the norphthalocyanine core. This phenomenon can be explained by density functional theory (DFT).Graphical abstractA novel highly conjugated donor–acceptor dyad with tetrathiafulvalene (TTF) covalently attached to a magnesium norphthalocyanine (NPc) unit was synthesized.
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research