| 초록 |
NMR has long played a significant role in studying reaction mechanisms in the field of polymer chemistry, since the technique reveals molecular structures and interactions with high spectral resolution. It is then often necessary to use sophisticated synthetic strategies such as the selective incorporation of stable isotopes, to infer information about the reaction mechanism. However, a more direct and potentially more powerful approach to characterizing a reaction is the monitoring of species that arise as the reaction occurs. Using dissolution dynamic nuclear polarization, a hyperpolarization technique that can enhance NMR signal by several orders of magnitude, it is possible to study chemical reactions in real time. Here, we use this unique feature of a hyperpolarized polymerization reaction to enable the detection of intermediate species as they arise during the synthesis of living anionic polymerization reactions. |
