첨단 주족 화학 연구실

N-heterocyclic carbenes (NHCs) have been studied in various fields, including catalyst and main group element chemistry. NHCs facilitate the generation and utilization of unstable species, including main group and organic radicals. The design and syntheses of air-persistent organic radicals (APORs) are challenging because of the abundance of reactive molecules in the air, including water, carbon dioxide, and dioxygen. NHCs are effective at stabilizing radical centers because of their bulky substituents and low-lying empty orbitals. Stable organic radicals in air by introducing NHCs have been reported and are being studied. In addition, radical ion pairs, consisting of a radical cation and a radical anion, have recently attracted much attention in the fields of catalysis and quantum information. However, few examples of their structures and properties have been reported due to their extreme instability and high reactivity in air. We are studying the possibility that radical pairs can be applied to the qubit, the smallest unit of quantum information processing. One of the examples is Grubbs catalyst which catalyzes metathesis reaction between two C-C double bonds. Using olefin metathesis, cyclic polymers can be accessed by ring-expansion metathesis polymerization (REMP) from cyclic monomers. Our goal is to develop a new REMP catalyst for cyclic polymers with well-controlled molecular weight and narrow polydisperity. In addition, we have done several research on the activation of small molecules such as nitrogen(N2), using low-valent metal complexes. We will also explore many spectroscopic techniques including UV‐vis, FTIR, EPR and multi‐nuclear NMR, Xray crystallography, and quantum‐chemical calculations (DFT) to understand chemical transformations that we are developing.