Non-aqueous solvents for DNP surface enhanced NMR spectroscopy

Chem Commun (Camb). 2012 Jan 18;48(5):654-6. doi: 10.1039/c1cc15242d. Epub 2011 Oct 28.

Abstract

A series of non-aqueous solvents combined with the exogenous biradical bTbK are developed for DNP NMR that yield enhancements comparable to the best available water based systems. 1,1,2,2-tetrachloroethane appears to be one of the most promising organic solvents for DNP solid-state NMR. Here this results in a reduction in experimental times by a factor of 1000. These new solvents are demonstrated with the first DNP surface enhanced NMR characterization of an organometallic complex supported on a hydrophobic surface.