Water-soluble BDPA radicals with improved persistence
作者:Sucharita Mandal、Snorri Th. Sigurdsson
DOI:10.1039/d0cc04920d
日期:——
1,3-Bis(diphenylene)-2-phenylallyl (BDPA) radicals are promising polarizingagents for increasing the sensitivity of NMR spectroscopy through dynamicnuclearpolarization (DNP), but have low persistence and solubility in aqueousmedia. New tetraalkyl/aryl-ammonium derivatives of BDPA are soluble in polar solvents and are highly persistent, with 5–20-fold lower initial rates of degradation than BDPA