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Chinese Chemical Letters 2021年第10期32卷 3199-3201页

作者： Xuemei Wang Xinglan Cui Hong Ji Fangbing Wang Yacong Liu Xinzhen Du Xiaoquan Lu Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry and ChemicalEngineeringNorthwest Normal UniversityLanzhou 730070China

A novel flower-shaped zeolitic imidazolate framework(ZIF) doped organic-inorganic hybrid monolithic column(ZIF-HMC) was prepared by a simple sol-gel "one-step" method and utilized for efficient capillary microextraction(CME) of four brominated flame retardants.The prepared monolithic was characterized by Fourier transform infrared,scanning electron microscopy,X-ray photoelectron spectroscopy,energy disperse spectroscopy,and N_(2) adsorption-desorption.The parameters of CME were optimized by orthogonal array design.Under the optimal conditions,the ZIF-HMC showed excellent extraction efficiency,the limit of detection(LODs) and the limit of quantification(LOQs) were in the range of0.52$3.1 mg/L and 1.7$10 mg/L,respectively,and the proposed method demonstrated good recovery(88.8%–116.6%) with the RSD less than 13.6% and a reusability of at least 30 times.The ZIF-HMC possessed great potential for separating organic pollutants and the strategy used here could be extended to prepare other derivatized HMC functionalized monoliths.

关键词： Capillary microextraction Brominated flame retardants Hybrid monolithic column Zeolitic imidazolate framework

Layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots as an enhanced electrochemical hydrogen evolution catalyst

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Chinese Chemical Letters 2019年第6期30卷 1253-1260页

作者： Tong Guo Lina Wang Sen Sun Yan Wang Xiaoling Chen Kangning Zhang Dongxia Zhang Zhonghua Xue Xibin Zhou Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Geography and Environment Science Northwest Normal University Lanzhou 730070 China College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 China

A novel three-dimensional (3D) layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots (MoS2@N-GQDs-GR) composites as an enhanced electrochemical hydrogen evolution catalyst. The few layered MoS2 nanoflowers supported on N-GQDs-GR surface were elaborately fabricated by one-pot hydrothermal method, which MoS2 and N-GQDs-GR exist in a bonding manner of Mo-N. In addition, due to the layered MoS2 sheet edge exposes more hydrogen evolution active sites and N-GQDs-GR have high conductivity, the composites exhibit prominent electrocatalytic activity with a low overpotential 99 mV, a small Tafel slope 49.3 mV/dec. Therefore, that the current work will develop HER catalysts may replace Pt.

关键词： N-doped graphene quantum dots Graphene Molybdenum disulfide Catalyst Hydrogen evolution reaction

Recent advances in the development of colorimetric analysis and testing based on aggregation-induced nanozymes

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Chinese Chemical Letters 2021年第1期32卷 25-32页

作者： Honghong Rao Xin Xue Mingyue Luo Haixia Liu Zhonghua Xue College of Chemistry&Chemical Engineering Lanzhou City UniversityLanzhou 730070China Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry&Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China

Colorimetric sensing strategies as a powerful point-of-care testing(POCT) tool have attracted significant interest in various chem/biosensing applications.Taking the excellent bare-eye-detectable signaling feature,nanozymes-based colorimetric sensors enable more potential applications and have been a new forefront in the colorimetric POCT analysis toward different target analytes.However,the low catalytic activity of nanozymes in most cases limits their practical application.Recent efforts demonstrate that the aggregation-induced nanozymes provide a general means to modulate nanozymes activity and enhance colorimetric sensing performances of some nanozymes-based colorimetric sensors.But there are few reports are explored to discuss and review such aggregation-induced nanozymes and their colorimetric sensing applications.To highlight the advances and progress in aggregation-induced nanozymes based colorimetric assays,we herein summary the fundamentals,classify and applications of this newlydeveloping field,focusing on the aggregation-induced activity enhancement of nanozymes(AIAEnanozymes) with a significant "signal-on" feature and aggregation-induced activity inhibition of nanozymes(AIAI-nanozymes) with a dramatical "signal-of" characteristics.Finally,we also propose the current challenges and the future prospects on both AIAE-nanozymes and AIAI-nanozymes.

关键词： Colorimetry Nanozymes Aggregation-induced effect Point-of-care testing Naked eye

Preparation of chitosan/N-doped graphene natively grown on hierarchical porous carbon nanocomposite as a sensor platform for determination of tartrazine

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Chinese Chemical Letters 2017年第7期28卷 1492-1498页

作者： Zhen-Zhen An Zhuang Li Yong-Yang Guo Xiao-Ling Chen Kang-Ning Zhang Dong-Xia Zhang Zhong-Hua Xue Xi-Bin Zhou Xiao-Quan Lu Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Geography and Environment ScienceNorthwest Normal UniversityLanzhou 730070China College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070China

In this work,the chitosan and N-doped graphene natively grown on hierarchical porous carbon（N-PC-G/CS） nanocomposite was obtained by ultrasonic method,as a novel sensor platform for determination of tartrazine（TT）.The nanocomposite as prepared had well dispersivity in water and excellent conductivity.The N-PC-G/CS nanocomposite was characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,nitrogen adsorption-desorption,fourier transform infrared（FTIR） and electrochemical impedance spectroscopy（EIS）.The application of N-PC-G/CS for determination of tartrazine（TT） was investigated by chronocoulometry（CC）,cyclic voltammetry（CV） and differential pulse voltammetry（DPV）.Under optimized conditions,the sensor displayed a sensitive response to TT within a wide concentration range of 0.05-15.0 μmol/L,the detection limits is 0.036 μmol/L（S/N = 3）.Furthermore,this nanocomposite could be efficiently applied for determination of TT in soft drink samples.

关键词： Porous carbon Graphene Chitosan Sensor Tartrazine

基于卟啉的荧光成像介导线粒体靶向光动力/光热协同癌症治疗

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Science China Materials 2022年第2期65卷 527-535页

作者：尚登辉喻其林刘伟张守婷李轶陈晶张振卢小泉 Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry&Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China Tianjin key laboratory of Molecular Optoelectronic Science Department of Chemistry School of ScienceTianjin UniversityTianjin 300072China key laboratory of Molecular Microbiology and Technology Ministry of EducationDepartment of MicrobiologyCollege of Life ScienceNankai UniversityTianjin 300071China

线粒体是细胞的动力中心,在激活癌细胞凋亡通路中起关键作用.而线粒体易受具有细胞毒性的活性氧物种(ROS)和局部过热的影响.本文中,我们开发了一种线粒体靶向的"纳米导弹",即卟啉接枝的聚多巴胺纳米材料(PTPF-MitP),它具有自供氧的光动... 详细信息

线粒体是细胞的动力中心,在激活癌细胞凋亡通路中起关键作用.而线粒体易受具有细胞毒性的活性氧物种(ROS)和局部过热的影响.本文中,我们开发了一种线粒体靶向的"纳米导弹",即卟啉接枝的聚多巴胺纳米材料(PTPF-MitP),它具有自供氧的光动力治疗(PDT)和光热治疗(PTT)的特性,通过靶向单元MitP选择性地传递至线粒体,在650 nm激光刺激下,线粒体功能遭到严重的损伤,释放凋亡因子细胞色素C(Cyt C),从而激活癌细胞的凋亡途径,增强肿瘤的治疗效果.体外实验发现此纳米药物对人肺肿瘤细胞(A549)的细胞毒性比缺乏线粒体靶向单元的PTPF提高了2倍,此外,它对小鼠体内的肿瘤表现出实时可视化和高效抑制作用.这为癌症治疗策略的发展提供了有力指导.

关键词：癌症治疗线粒体靶向光动力细胞色素C 光热治疗凋亡因子细胞毒性荧光成像

Synthesis, Crystal Structure and Photoluminescent Property of a Novel Disilver Complex with Pyrazinyl Oxime Ligand

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Chinese Journal of Structural Chemistry 2013年第2期32卷 161-164页

作者：卫芸刘家成杨云霞姚小强胡东成宋雪艳 key laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education Key Laboratory of Polymer Materials of Gansu Province Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University

A novel binuclear Ag（I） complex [Ag2（C6H6NaO）2（C6H7N3O）2]·2CH3CN （1） was synthesized by the evaporation reaction of silver nitrate and （E）-1-（pyrazin-2-yl）ethanone oxime （HL）. The complex was characterized by elemental analysis, IR spectrum and X-ray single-crystal diffraction analysis. It crystallizes in the monoclinic space group C2/c with a = 22.7089（3）, b = 11.5443（7）, c = 16.1468（4）/A, β = 127.7150（10）°, V= 3348.6（2） A^3, Dc = 1.675 g/cm^3, Mr = 844.42, Z = 4, F（000） = 1696.0,μ = 1.226 mm^-1, the final R =0.0250 and wR = 0.070. The coordination around the silver（I） atom is a distorted trigonal-bipyramidal geometry involving one protonated pyrazinyl oxime ligand （HL）, one deprotonated oxime ligand （L^-） and one CH3CN solvate molecule in the asymmetric unit of complex 1.

关键词： crystal structure binuclear Ag（I） complex photoluminescent property

Mapping protein electron transfer pathways with Harlem software

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Mapping protein electron transfer pathways with Harlem softw...

一种智能纳米酶工厂作为诊疗纳米平台用于协同癌症治疗

第十一届全国计算（机）化学学术会议

作者：陈晶卢小泉 key laboratory of bioelectrochemistry＆environmental analysis of gansu province College of Chemistry ＆ Chemical EngineeringNorthwest Normal University

＜正＞Electron transfer is one of the simplest but crucial reactions in biochemistry present in almost all enzymatic cycles.It might involve a relatively short pathway,for example from a substrate directly bound in the vicinity of the acceptor group,or a large pathway,for example across protein-protein complexes,where the donor and the acceptor might be considerably apart from each

关键词： Harlem electron transfer pathway

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Science China Materials 2023年第11期66卷 4499-4511页

作者：戴芳芳谢明森杜佩瑶张振陈美玲卢小泉 key laboratory of bioelectrochemistry and environmental analysis of gansu province College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China Tianjin key laboratory of Molecular Optoelectronic Department of Chemistry School of ScienceTianjin UniversityTianjin 300072China School of Chinese Materia Medica Tianjin University of Traditional Chinese MedicineTianjin 301617China

多模态疗法是结合多种疗法治疗通常复杂而隐蔽的肿瘤组织的最有希望的策略之一.尽管多功能纳米材料已被设计用于构建多模态疗法,但普遍存在的各组成部分之间的不充分协调可能导致协同治疗效果不佳,并妨碍其充分实现临床潜力.在此,受可... 详细信息

多模态疗法是结合多种疗法治疗通常复杂而隐蔽的肿瘤组织的最有希望的策略之一.尽管多功能纳米材料已被设计用于构建多模态疗法,但普遍存在的各组成部分之间的不充分协调可能导致协同治疗效果不佳,并妨碍其充分实现临床潜力.在此,受可控“集束炸弹”模型的启发,我们设计了一种智能、生物相容、多功能的纳米工厂系统(PDA@GOx@MnO_(2)-PEG),它封装了多种纳米试剂,以达到对肿瘤组织的高破坏效率.刺激反应性的外层二氧化锰作为“炸弹”的外壳可触发级联催化反应,并与GOx形成一个自给自足的环形催化链.PDA作为一种具有良好蛋白质携带能力的基质,实现了高的GOx负载.同时,其高效的光热转换效率显示了低温(~45℃)进一步提高GOx酶活性的潜力.值得注意的是,内部的GOx就像一个“子炸弹”,通过控制释放来增加肿瘤缺氧部位的积累,并在充足的氧气和低热度的帮助下充分发挥其葡萄糖消耗能力进行饥饿治疗.在这个体系中,各种纳米试剂相互配合,层层推进,充分发挥其威力,形成了一个自给自足的纳米工厂模型,通过协同策略实现了良好的低温光热-饥饿协同治疗.此外,该纳米复合材料表现出三态成像能力,可用于敏感诊断和实时监控治疗.这项研究为设计生物相容性和智能治疗纳米平台提供了新的见解,使精准医疗中的多模式治疗效果最大化.

关键词： starvation therapy low-temperature photothermal therapy nanofactory theranostic cancer

光电化学水分解中基于半导体的界面工程策略和载流子动力学表征技术的研究进展（英文）

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Science China Materials 2024年第5期67卷 1379-1392页

作者：张生雅杜佩瑶卢小泉 key laboratory of Water Environment Protection in Plateau Intersection(Ministry of Education) Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu ProvinceCollege of Chemistry & Chemical EngineeringNorthwest Normal University College of Chemistry & Pharmacy Northwest A&F University

为了缓解能源危机和环境问题,太阳能的应用受到了人们的广泛关注.光电化学水分解是一种极有前景的、可以将清洁可再生太阳能转化为清洁燃料的技术.提高能量转换效率无疑是光电化学水分解技术的关键.光生载流子的分离和转移速率是影响光... 详细信息

为了缓解能源危机和环境问题,太阳能的应用受到了人们的广泛关注.光电化学水分解是一种极有前景的、可以将清洁可再生太阳能转化为清洁燃料的技术.提高能量转换效率无疑是光电化学水分解技术的关键.光生载流子的分离和转移速率是影响光电化学性能的主要因素之一.本综述简要介绍了一些界面工程策略以增强光阳极中光生载流子的分离和传输.此外,总结了近期在原位量化光生载流子传输动力学研究中的进展.我们的目的是帮助读者了解这一领域的最新发展,并为理解动态空穴转移提供一个独特的视角.最后,我们对发展微纳尺度电极界面光生载流子分离和转移动力学表征手段中面临的重大挑战和未来前景进行了展望.

关键词： photoelectrochemical water splitting photogenerated carrier dynamics interface engineering strategy scanning photoelectrochemical microscopy (SPECM)

Friction of MoO_(3) Nanoflakes on Graphite Surface with an Ace-like Intercalation Layer

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Chemical Research in Chinese Universities 2022年第3期38卷 769-773页

作者： WEI Dawei ZHANG Guangjie LU Xiaoquan QIU Xiaohui Tianjin key laboratory of Molecular Optoelectronic Department of ChemistrySchool of ScienceTianjin UniversityTianjin300072P.R.China CAS key laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190P.R.China Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry&Chemical EngineeringNorthwest Normal UniversityLanzhou730070P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

How water layer adsorbed on solid surface under ambient conditions affects the interfacial friction is a fundamental question for understanding the friction and lubrication phenomena in practical system.We investigate the formation of ice-like(IL)water layers on the hydrophobic surface of graphite with partially covered MoO_(3)nanoflakes(NFs)using atomic force microscopy(AFM)based techniques.The IL water layers are found surrounding the MoO_(3)NFs and also intercalated at the MoO_(3)/graphite interface,as proved by thickness measurements as well as local adhesion force and surface potential mappings.AFM manipulations carried out on MoO_(3)NFs on graphite show that the presence of the IL water layers increases the frictional resistance of the interface.Comparing the results on continuous and discontinuous IL water layers,we can identify the different sliding interfaces in the two scenarios.The increased friction for MoO_(3)NFs sliding on graphite with an intercalated water layer is attributed to the energy dissipation originated from the metastable nature of the IL layers.

关键词： Friction Ice-like water MoO_(3) Graphite