STRUCTURE OF GLUCOSE-DERIVED HYDROTHERMAL CARBON: AN ADVANCED SOLID-STATE MAS 13C NMR STUDY

摘要

The perspective of synthesizing carbon functionalized materials from renewable sources is growing in interest due to the need of inexpensive engineered materials. The hydrothermal treatment of saccharides at relatively low temperatures (180°C) is a suitable answer to this need. Nevertheless, the control over material micro and chemical structure cannot leave aside the quest of a deeper knowledge of the structure itself. In this communication, we combine solid state NMR and isotopic enrichment to make a giant leap towards the structural refinement of glucose-synthesized carbon powder. ~1H-~(13)C and ~(13)C-~(13)C connectivities were established for the first time by using two-dimensional correlation methods: dipolar driven heteronuclear correlations (HETCOR) and homonuclear double quantum (DQ) filter were used to clearly visualize between proton-carbon and carbon-carbon proximities.