Mixed‐Valence Compounds as Polarizing Agents for Overhauser Dynamic Nuclear Polarization in Solids**
作者:Andrei Gurinov、Benedikt Sieland、Andrey Kuzhelev、Hossam Elgabarty、Thomas D. Kühne、Thomas Prisner、Jan Paradies、Marc Baldus、Konstantin L. Ivanov、Svetlana Pylaeva
DOI:10.1002/anie.202103215
日期:2021.7.5
Herein, we investigate a novel set of polarizing agents—mixed-valencecompounds—by theoretical and experimental methods and demonstrate their performance in high-field dynamic nuclear polarization (DNP) NMR experiments in the solid state. Mixed-valencecompounds constitute a group of molecules in which molecular mobility persists even in solids. Consequently, such polarizing agents can be used to perform
Intramolecular Charge Transfer in Kekulé‐ and Non‐Kekulé‐Bridged Bis(triarylamine) Radical Cations: Missing Key Compounds in Organic Mixed‐Valence Systems
作者:Masashi Uebe、Akihiro Ito
DOI:10.1002/asia.201900036
日期:2019.5.15
electronic coupling in organic mixed‐valence (MV) systems, the optically induced and thermally assisted intramolecular charge/spin transfer (ICT/IST) processes have been investigated for three bis(triarylamine) (BTA) radical cations as missing key compounds in very basic BTA MV systems. In contrast to the case of p‐ and m‐dinitrobenzene radical anions, the difference in the strength of electronic coupling