Hydrogen Bonding Versus π-Stacking in Charge-Transfer Co-crystalsClick to copy article linkArticle link copied!
- Nathan Yee
- Afshin DadvandAfshin DadvandDepartment of Chemistry, McGill University, Montreal QC H3A 0B8, CanadaMore by Afshin Dadvand
- Ehsan HamzehpoorEhsan HamzehpoorDepartment of Chemistry, McGill University, Montreal QC H3A 0B8, CanadaMore by Ehsan Hamzehpoor
- Hatem M. TitiHatem M. TitiDepartment of Chemistry, McGill University, Montreal QC H3A 0B8, CanadaMore by Hatem M. Titi
- Dmitrii F. Perepichka*Dmitrii F. Perepichka*[email protected]Department of Chemistry, McGill University, Montreal QC H3A 0B8, CanadaMore by Dmitrii F. Perepichka
Abstract

We report a comparative study of two structurally similar donor–acceptor complexes with (1a) and without (2a) H-bonding using X-ray crystallography, spectroscopic analysis, and density functional theory calculations. H-Bonding enhances the donor–acceptor interactions, as manifested in a narrower band gap and shorter π-stacking distance in 1a versus 2a, despite 2 being a stronger donor than 1. Thin-film transistors of 1a showed ambipolar charge transport with “double dip” characteristics, whereas no transistor behavior was observed for 2a.
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