Solvent-free dynamic nuclear polarization enhancements in organically modified mesoporous silica - Oliveira Junior, Marcos de; Herr, Kevin; Brodrecht, Martin; Haro-Mares, Nadia B.; Wissel, Till; Klimavicius, Vytautas; Breitzke, Hergen; Gutmann, Torsten; Buntkowsky, Gerd (Physical Chemistry Chemical Physics, 2021)