| Institution: | 1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China
These authors contributed equally to this work.;2. School of Physics, Northwest University, Xi'an, 710127 P. R. China;3. Center for Nanosystems Chemistry & Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany;4. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of, the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127 P. R. China |
| Abstract: | Charge-transfer (CT) complexes, formed by noncovalent bonding between electron-rich (donor, D) and electron-deficient (acceptor, A) molecules (or moieties) have attracted considerable attention due to their fascinating structures and potential applications. Herein, we demonstrate that anion coordination is a promising strategy to promote CT complex formation between anion-binding, electron-rich tris(urea) donor ligands (D) and electron-deficient viologen cation acceptors (A), which form co-crystals featuring infinite ⋅⋅⋅DADA⋅⋅⋅ or discrete (circular DADA or three-decker DAD) π-stacking interactions. These CT complexes were studied by X-ray diffraction, UV/Vis spectroscopy, electric conductivity measurements, charge displacement curve (CDC) calculations, and DFT computations. |
