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Wang, Y.*; Jia, G.*; Cui, X.*; Zhao, X.*; Zhang, Q.*; Gu, L.*; Zheng, L.*; Li, L. H.*; Wu, Q.*; Singh, D. J.*; et al.
Chem, 7(2), p.436 - 449, 2021/02
被引用回数：194 パーセンタイル：99.8(Chemistry, Multidisciplinary)Nanozymes are promising alternatives to natural enzymes, but their use remains limited owing to poor specificity. Overcoming this is extremely challenging due to the intrinsic structural complexity of these systems. We report theoretical design and experimental realization of a series of heterogeneous molybdenum single-atom nanozymes (named Mo
-N
-C), wherein we find that the peroxidase-like specificity is well regulated by the coordination numbers of single Mo sites. The resulting Mo-N
-C catalyst shows exclusive peroxidase-like behavior. It achieves this behavior via a homolytic pathway, whereas Mo-N
-C and Mo-N
-C catalysts have a different heterolytic pathway. The mechanism of this coordination-number-dependent enzymatic specificity is attributed to geometrical structure differences and orientation relationships of the frontier molecular orbitals.
baryons and fine structure of strong interactionChen, H.-X.*; Cui, E.-L.*; 保坂 淳; Mao, Q.*; Yang, H.-M.*
European Physical Journal C, 80(3), p.256_1 - 256_6, 2020/03
被引用回数：11 パーセンタイル：62.17(Physics, Particles & Fields)The heavy baryon system bounded by the strong interaction has a rich internal structure, so its mass spectra can have the fine structure similar to the line spectra of atom bounded by the electromagnetic interaction. We systematically study the internal structure of 
-wave baryons and calculate their 
-wave decay properties. The present study, together with our previous studies on their mass spectra and 
-wave decay properties, suggest that all the four excited baryons recently discovered by LHCb can be well explained as -wave baryons, and their beautiful fine structure is directly related to the rich internal structure of -wave baryons.
-wave bottom baryons within light-cone sum rulesYang, H.-M.*; Chen, H.-X.*; Cui, E.-L.*; 保坂 淳; Mao, Q.*
European Physical Journal C, 80(2), p.80_1 - 80_17, 2020/02
被引用回数：20 パーセンタイル：80.31(Physics, Particles & Fields)We use the method of light-cone sum rules to study decay properties of -wave bottom baryons belonging to the 
flavor 6
representation. In Cui et al. (Phys Rev D 99:094021, 2019) we have studied their mass spectrum and pionic decays, and found that the 
(6097) and 
(6227) can be well interpreted as -wave bottom baryons of 
= 3/2
. In this paper we further study their decays into ground-state bottom baryons and vector mesons. We propose to search for a new state (5/2), that is the = 5/2 partner state of the (6227), in the (5/2)
*
*
decay process. Its mass is 12
5 MeV larger than that of the (6227).
and 
as -wave bottom baryons of 
Cui, E.-L.*; Yang, H.-M.*; Chen, H.-X.*; 保坂 淳
Physical Review D, 99(9), p.094021_1 - 094021_15, 2019/05
被引用回数：33 パーセンタイル：86.82(Astronomy & Astrophysics)We use the method of QCD sum rules within the framework of heavy quark effective theory to study the mass spectrum of the 
and 
, and use the method of light cone sum rules still within the heavy quark effective theory to study their decay properties. Our results suggest that they can be well interpreted as -wave bottom baryons with the spin-parity 
. They belong to the baryon doublet ![$$[6_F,2,1,lambda]$$](/search/images/ERNTMX0GFQZCYMJMLRWGC1LCMRQV0JA.gif)
, where the total and spin angular momenta of the light degree of freedom are 
and 
, and the orbital angular momentum is between the bottom quark and the two-light-quark system (
-type). This doublet contains six bottom baryons, and we predict masses (mass differences) and decay widths of the other four states to be 
GeV, 
MeV, 
MeV, 
MeV, 
MeV. We propose to search for them in further LHCb experiments.
)Lang, R.*; Li, T.*; 松村 大樹; Miao, S.*; Ren, Y.*; Cui, Y.-T.*; Tan, Y.*; Qiao, B.*; Li, L.*; Wang, A.*; et al.
Angewandte Chemie; International Edition, 55(52), p.16054 - 16058, 2016/12
Single-atom catalysts have the advantages of both homogeneous catalysts, such as "isolated sites", and heterogeneous catalysts, such as stability and reusability, and thus would be a promising alternative to traditional homogeneous catalysts. In the hydroformylation of olefins, single-atom Rh catalysts supported on ZnO nanowires demonstrate similar efficiency (TON 
40000) compared to that of homogeneous Wilkinson's catalyst (TON 19000). HAADF-STEM and infrared CO chemisorption experiments identified isolated Rh atoms on the support. XPS and XANES spectra indicate that the electronic state of Rh is almost metallic. The catalysts are about one or two orders of magnitude more active than most reported heterogeneous catalysts and can be reused four times without an obvious decline in activity.
