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Plasma Science and Technology 2014年第4期16卷 305-310页

作者：刘金波陆荣华郭丽金玉奇郭敬为 key laboratory of chemical Lasers Dalian Institute of Chemical PhysicsChinese Academy of Sciences key laboratory for Quantum Optics and Centre for Cold Atom Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

Ultracold plasma provides a possible route to approach the strongly-coupled regime under laboratory conditions. Normally, the lifetime of ultracold plasma is very limited due to plasma heating and expansion mechanisms. We present a new method to generate long lifetime ultracold plasmas consisting mainly of cations and anions. This plasma demonstrates a capability of traversing a DC barrier of up to 5 （or -3） V. The lifetime of this plasma is expected to be more than 250us. Finally, molecular dynamics （MD） simulation is used to explain how anions slow the expansion rate and prolong the lifetime of this plasma.

关键词： ultracold plasma nitric oxide long lifetime

Quantum-chemical Study on the Structures and Properties of Uracil-BX_3 (X = F,Cl) Complexes

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Chinese Journal of Structural Chemistry 2006年第8期25卷 947-956页

作者： ZHANG Shi-Guo LI Hong YANG Pin Department of Chemistry and chemical Engineering Institute ofMaterial Chemistry Binzhou University Binzhou 256603 China key laboratory. of chemical biology and Molecular Engineering of Minist~ ofEducation Institute of Molecular Science Shanxi University Taiyuan 030006 China

For the uracil-BX3 （X = F, Cl） systems, geometries and binding energies have been calculated by using the Lee-Young-Parr correlation functionals （B3LYP） method of density functional theory （DFT） and the second-order Moller-Plesset （MP2） method of ab initio at the 6- 311 ＋G^＊ or 6-311 ＋＋G^＊ basis set. Four isomers were found for each system, and then the single-point energy evaluations were performed using the larger basis sets of （6-311 ＋G（2df, p） and aug-cc-pVDZ with DFF method. In the most stable isomer of uracil-BF3 or uracil-BCl3, the boron atom of BX3 （X = F, Cl） connects to the carbonyl oxygen O7 of uracil with a stabilization energy of -46.56 or -31.10 kJ/mol at the B3LYP/6-31 1＋G^＊ level （BSSE corrected）. The analyses for combining interaction between BX3 and uracil with the atom-in-molecule theory （AIM） and natural bond orbital method （NBO） have been performed. The results indicate that all isomers were formed with σ-p type interactions between uracil and BX3, in which the carbonyl oxygen offers its lone pair electrons to the empty p orbital of boron atom and the concomitances of charge transfer from uracil to BX3 occur. Moreover, there exists one or two hydrogen bonds in most isomers of uracil-BX3 system and these hydrogen bonds contribute to the stability of the complex systems. Frequency analysis suggests that the stretching vibration of BX3 undergoes a red shift in complexes. Uracil-BF3 complex is more stable than uracil-BCl3 although the distance of B-O is shorter in the latter. Besides, the conversion mechanisms between different isomers of uracil-BF3 have been obtained.

关键词： B3LYP MP2 intermolecular interaction uracil-BF3 complex uracil-BCl3 complex

A novel method for the synthesis of sulfur substituted-cyclopyrophosphate of cADPR analogs

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Chinese chemical Letters 2014年第12期25卷 1583-1585页

作者： Ren-Min Wu Na Qi Yu-Wen Jia Zhu Guan Liang-Ren Zhang Li-He Zhang Zhen-Jun Yang State key laboratory of natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking University

A facile and efficient protocol for the synthesis of sulfur substituted-cyclopyrophosphate of cIDPRE（P_S^1-cIDPRE） was *** key step was the cyclization process which was completed by the sulfur substituted cyclizati... 详细信息

关键词： cADPR cIDPRE Phosphoramidite strategy Cyclopyrophosphate

O-GIcNAc transferase regulates centriole behavior and intraflagellar transport to promote ciliogenesis

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Protein & Cell 2020年第11期11卷 852-857页

作者： Fan Yu Te Li Yanchao Sui Qingxia Chen Song Yang Jia Yang Renjie Hong Dengwen Li Xiumin Yan Wei Zhao Xueliang Zhu Jun Zhou Department of Genetics and Cell biology College of Lifle SciencesState Key Laboratory of Medicinal Chemical BiologyTanjin Key Laboratory of Protein ScienceKey Laboratory of Bioactive Materials of the Ministry of EducationNankai UniversilyTianjin 300071China College of Pharmacy State Key Laboratory of Medicinal Chemical BiologyNankai UniyersityTianjin 300071China State key laboratory of Cell biology Shanghai Insttute of Biochemistry and Cell BiologyCenter for Excel lence in Molecular Cell ScienceChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China Institute of Biomedical Sciences Shandong Provincial Key Lab-oratory of Animal Resistance BiologyCollaboralive Innovation Center of Cell Biology in Universities of ShandongCollge of Life Sciences.Shandong Nomal UniversityJinan 250014China

Dear Editor,O-GIcNAcylation is a nutrient sensor that is particularly sensitive to environmental glucose(Hardiville and Hart,2014).Glucose can be converted to UDP-GIcNAc through the hexosamine biosynthetic pathway,providing a substrate for *** enzymes participate in this reversible modification,O-GIcNAc transferase(OGT),which adds a single GIcNAc residue to the serine/threonine sites of proteins,and O-GIcNAcase(OGA),which removes the residue(Yang and Qian,2017).

关键词： UDP residue remove

Recent progress on structural coloration

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Photonics Insights 2024年第2期3卷 1-30页

作者： Yingjie Li Jingtian Hu Yixuan Zeng Qinghai Song Cheng-Wei Qiu Shumin Xiao Ministry of Industry and Information Technology key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic SystemsHarbin Institute of TechnologyShenzhenChina Pengcheng laboratory ShenzhenChina Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanChina

Structural coloration generates colors by the interaction between incident light and micro-or nanoscale *** has received tremendous interest for decades,due to advantages including robustness against bleaching and environmentally friendly properties(compared with conventional pigments and dyes).As a versatile coloration strategy,the tuning of structural colors based on micro-and nanoscale photonic structures has been extensively explored and can enable a broad range of applications including displays,anti-counterfeiting,and ***,scholarly research on structural colors has had limited impact on commercial products because of their disadvantages in cost,scalability,and *** this review,we analyze the key challenges and opportunities in the development of structural *** first summarize the fundamental mechanisms and design strategies for structural colors while reviewing the recent progress in realizing dynamic structural *** promising potential applications including optical information processing and displays are also discussed while elucidating the most prominent challenges that prevent them from translating into technologies on the ***,we address the new opportunities that are underexplored by the structural coloration community but can be achieved through multidisciplinary research within the emerging research areas.

关键词： structural coloration metasurfaces nanophotonics

Analysis of Intra-and Intermolecular Hydrogen Bonds and Quantum chemical Calculations on 1-(3-Fluorobenzoyl)-3-(4-trifluoromethylphenyl)thiourea

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Chinese Journal of Structural Chemistry 2017年第11期36卷 1759-1770页

作者：乔磊黄洁胡伟张玉秦宝福宋纪蓉高原 School of chemical Engineering Northwest University/Shaanxi Key Laboratory of Physico-inorganic Chemistry College of Life Science North West Agriculture and Forestry University Ministry of Science and Technology The Palace Museum

1-（3-Fluorobenzoyl）-3-（4-trifluoromethylphenyl）thiourea, C15H10F4N2OS, has been synthesized firstly and determined by single-crystal X-ray diffraction analysis. The title compound crystallizes in monoclinic system, space group C2/c with a = 31.87（3）, b = 7.705（9）, c = 12.591（14） A°, b = 106.06（2）°, V = 2971（6） A°^3, Z = 8, Dc=1.530 g·cm^-1, F（000） = 1392, m = 0.266 mm^–1, S = 1.06, the final R = 0.070 and w R（I 〉 2s（I）） = 0.249. The crystal structure revealed that the carbonyl thiourea unit in the determined compound was mostly planar due in part to the formation of intramolecular N–H···O=C and C–H···S=C hydrogen bonds that form two S（6） rings. The intermolecular contacts of the crystal structure have been preformed based on the Hirshfeld surface and their associated 2D fingerprint plots. In the packing diagram of the synthesized compound, the C=S group formed two types of intermolecular hydrogen bonds by the H–N（C=O） group and the H–C of the phenyl ring, respectively, and they formed R2^2（8） and R2^2（14） ring motifs, respectively. The crystal packing form was also stabilized by the intermolecular hydrogen bonds C–H···O（1–x, y, 0.5–z） with the R2^2（10） ring motifs. In addition, supramolecular layers sustained by π-π stacking interactions（between the C（2）～C（7） rings with the C（10）～C（15） rings） are formed in the crystal structure of the title compound. The electronic and reactivity were assessed by the natural bond orbital（NBO） analysis in this study.

关键词： crystal structure Hirshfeld surface analysis hydrogen-bonding interactions thiourea derivative

Toposelective synthesis under thermodynamic control and bioactivities of topoisomers based on diethoxycarbonyl glycoluril derivatives

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Chinese Science Bulletin 2006年第17期51卷 2164-2168页

作者： ZHOU Baohan YIN Guodong WANG Zhiguo CHEN Yunfeng WU Anxin WAN Jian key laboratory of Pesticide and chemical biology Ministry of Education Department of Chemistry Central China Normal University Wuhan 430079 China

Six topoisomers consisting of diethoxy- carbonyl glycoluril have been successfully synthe- sized in one-pot by using a “figure-of-seven” building block through anti-connectivity and syn-connectivity reactions, respectively. The structures of all six topo- isomers were first determined by X-ray crystallogra- phy. The finding that (±) CT isomers are the dominant products under thermodynamic control can be ex- plained by the calculated relative energies of the six topoisomers. That the (±) CT isomers have the lowest energy is most likely due to the additional in- tramolecular electrostatic interactions between –NO2 and –OMe groups. The biological activities of the topoisomers were primitively investigated and the results of bioassay showed that the six topoisomers possessed obvious difference of herbicidal activity.

关键词：生物活性热力学控制生物化学 XRD

Effects of ZrO_2 Nanoparticles on the Microstructure and Thermal-protective Properties of PEO Coating on Al-12.5%Si Alloy

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Journal of Wuhan University of Technology(Materials Science) 2019年第1期34卷 156-164页

作者： WANG Ping HAN Jing YAN Junheng WANG Jiandong shaanxi key laboratory of Photoelectric Functional Materials and Devices School of Materials and Chemical Engineering Xi'an Technological University QuFu JinHuang Piston Corporation Limited Xi'an Military Representative Office PLA

PEO ceramic coatings including ZrO_2-Al_2O_3-SiO_2 in three phases were prepared on an Al-12.5%Si alloy in electrolyte solutions containing ZrO_2 nanoparticles. The microstructures and phases of the coatings were analyzed by SEM and XRD, and the heat insulation performance and the thermal shock resistance of the coatings were investigated. The compactness of the coating increased significantly and the hindrance of the Si element on plasma electrolytic oxidation process was effectively weakened. The growth rate of the coating was improved substantially with the addition of ZrO_2 nanoparticles. The PEO ceramic coatings are primarily composed of SiO_2 and high temperature steady phases such as a-Al_2O_3 and c-ZrO_2. Both the content of c-ZrO_2 and the heat-insulating property of the coating increased significantly. The ceramic coatings with special microstructure and composition formed in the solutions containing ZrO_2 nanoparticles possess excellent heat insulation performance and thermal shock resistance.

关键词： Al-12.5%Si alloy modified plasma electrolytic oxidation ZrO2 nanoparticles heat-insulating properties thermal shock resistance

Readily accessible rhodamine B-based photoresponsive material

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Science China Chemistry 2014年第2期57卷 248-251页

作者： LI Kai XIANG Yu TONG AiJun TANG Ben Zhong Beijing key laboratory Microanalytical Methods and Instrumentation key laboratory of Bioorganic Phosphorus Chemistry and chemical biology Ministry of Education Department of Chemistry Tsinghua University Department of Chemistry Institute of Molecular Functional MaterialsState Key Laboratory of Molecular NeuroscienceThe Hong Kong University of Science & Technology

A photochromic rhodamine B-based material containing Cd（Ⅱ） as bridge was facilely prepared. The 4-methoxylsalicylalde hyde rhodamine B bydrazone Cd（Ⅱ） complex displayed unusual ring-open response upon 365 nm UV irradiation, exhibiting long photochromic lifetime and good fatigue resistance. The UV-induced ring-open of the complex led to a distinct color and fluorescence change in acetonitrile. A new mechanism was put forward： salicylaldehyde part in the complex underwent UV-promoted isomerization from enol-form to keto-form, enhancing the chelation of Cd（Ⅱ） and yielding the ring-opening rhodamine B part. Compared to other reported photochromic systems, this new photochromic material offered attractive new insights into the development of low cost photochromic materials with good performance.

关键词： photochromism coordination compound rhodamine B salicylaldehyde hydrazone cadmium UV-light

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Stimuli responsive co-delivery of celecoxib and BMP2 from micro-scaffold for periodontal disease treatment

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Journal of Materials Science & Technology 2021年第16期75卷 216-224页

作者： Yi Hao Ran Tian Kaige Lv Zhongning Liu Jing Ni Pingyun Yuan Yongkang Bai Xin Chen Department of Prosthodontics Shanghai Ninth People's Hospital College of StomatologyShanghai Jiao Tong University School of MedicineNational Clinical Research Center of StomatologyShanghai Key Laboratory of Stomatology and Shanghai Research Institute of StomatologyShanghai 200240China Department of chemical Engineering Shaanxi Key Laboratory of Energy Chemical Process IntensificationInstitute of Polymer Science in Chemical EngineeringSchool of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an710049China Department of Prosthodontics Peking University School and Hospital of StomatologyNational Engineering Laboratory for Digital and Material Technology of StomatologyBeijing Key Laboratory of Digital StomatologyBeijing100081China

Controlling inflammation meanwhile facilitating tissue regeneration has been considered as a promising strategy to treat inflammatory bone defect. Herein, we describe the synthesis of a bio-sensitive poly(lactic-co-glycolic acid)/mesoporous silica nanocarriers core-shell porous microsphere(PLGA/MSNsPMS) encapsulated poly(L-lactic acid)(PLLA) spongy nanofibrous micro-scaffold as a new generation of therapeutic platform for effective reconstruction of bone defects caused by periodontal *** PLGA/MSNs-PMS were designed as stimuli-responsive carriers for on-demand co-delivery of multiple biomolecules to provide proper physiological environment, while the multi-level(from macro-,micro-to nanometers) nanofibrous and porous structures in PLLA micro-scaffold were in charge of the reconstruction of ECM, which synergistically contribute to the enhancement of new tissue formation under inflammatory condition. After local injection into periodontal tissue, this construct could sequentially release bone growth factor(BMP-2) as well as anti-inflammatory drug(celecoxib) loaded MSNs in response to the over-expressed matrix metalloproteinases(MMP) in periodontal region. During alveolar bone regeneration induced by BMP-2 and ECM like structure, the MSNs would further deliver celecoxib in target cells to achieve inflammation inhibition, resulting in effective treatment of periodontal disease.

关键词： periodontal inflammation treatment