Abstract
The importance of charge transfer (CT) and charge transport cannot be overstated (Phys. Chem. Chem. Phys. 2020, 22, 21583-21629). The shift to low-dielectric-constant carbon materials and devices, however, leads to the emergence of dominating electrostatic effects from localized dipole-generated fields. Resorting to molecular electrets allows examining the multifaceted nature of such effects. We develop bioinspired molecular electrets with enhanced CT capabilities that comprise anthranilamide residues. Even a single electret amino-acid residue can rectify CT (Angew. Chem. Int. Ed. 2018, 57, 12365-12369; J. Am. Chem. Soc. 2014, 136, 12966-12973). The molecular macrodipoles and the CT properties of these electrets strongly depend on their structure and conformational flexibility. Recently, we discovered an emergence of picosecond dipole transients (two-to-three times larger than the average dipole values) that originate from the solvent dynamics (J. Am. Chem. Soc. 2024, 146, 5162-5172). Further investigation reveals that these dipole transients appear universal and are not limited to large polar macromolecular structures. Such unexpectedly large dipole jumps provide underlying indication for the gating trends observed in picosecond and sub-picosecond CT kinetics (J. Am. Chem. Soc. 2016, 138, 12826-12832; Proc. Natl. Acad. Sci. USA 2021, 118, e2026462118). These unprecedented insights about the enormous picosecond dipole dynamics underlines new structure-function relationships essential for organic electronics and photonics, as well as for energy science and engineering.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call