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The recent advances in constructing designed electrode in lithium metal batteries

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Chinese Chemical Letters 2017年第12期28卷 2171-2179页

作者： Jiecheng Cui tian-guang zhan Kang-Da zhang Dong Chen Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life ScienceZhejiang Normal UniversityJinhua 321004China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Institute of Process Equipment College of Energy EngineeringZhejiang UniversityHangzhou 310027China

Lithium metal battery, one of the most promising candidates for high-energy-density storage system, has attracted extensive interest due to its extremely high theoretical specific capacity, low gravimetric density and lowest negative redox potential. However, the formation of lithium dendrites, uncontrolled interfacial reactions, and huge volume change during the cycles of charging and discharging lower the Coulombic efficiency and cause harsh safety issues; they are the major hurdles towards the practical applications of lithium metal batteries. This review presents the recent advances in lithium metal battery and focuses on the functional hybrid electrodes, which are constructed to boost the electrochemical performance of metallic lithium and suppress the growth of lithium dendrites. Their general design rules, fabrication strategies, enhanced performances, and potential applications are summarized and analyzed. An outlook of the challenges and the potentials of lithium metal battery is also provided, which facilitates the future development of lithium metal batteries

关键词： Lithium metal batteryLithium dendritesFunctional lithium electrodeUniform depositionEnergy storage materials

Light-fueled dissipative self-assembly at molecular and macro-scale enabled by a visible-light-responsive transient hetero-complementary quadruple hydrogen bond

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Chinese Chemical Letters 2023年第3期34卷 308-312页

作者： Shi-Tao Han Hong-Ying Duan tian-guang zhan Xiao-Bo Hu Li-Chun Kong Kang-Da zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life ScienceZhejiang Normal UniversityJinhua 321004China Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of ScienceWestlake UniversityHangzhou 310024China

The development of out-of-equilibrium self-assembly systems using light as input fuel is highly desirable and promising for the fabrication of smart supramolecular materials. Herein, we report the construction of new artificial light-fueled dissipative molecular and macroscopic self-assembly systems based on a visible-light-responsive transient quadruple H-bonding array, which consists of an azobenzene-modified ureidopyrimidinone(UPy) module(Azo-O-UPy) and a nonphotoactive diamidonaphthyridine(DAN) derived competitive binder(Napy-1). The visible light(410 nm) irradiation can induce the E to Z isomerization of the azobenzene unit of E-Azo-O-UPy to produce Z-Azo-O-UPy with an opened UPy binding site, which can complex with Napy-1 to form a quadruply H-bonded heterodimer. The heterodimer is metastable and can be quickly disassembled in dark, owing to the fast thermal relaxation of Z-Azo-O-UPy to E-Azo-O-UPy. While introducing such transient quadruple H-bonding interaction into a linear polymer system or a polymeric gel system, light-fueled out-of-equilibrium polymeric assembly both at molecular and macro-scale can be achieved.

关键词： Dissipative self-assembly Macroscopic self-assembly Photo-responsiveness Quadruple hydrogen bonds Supramolecular chemistry

Low-molecular-weight photoresponsive supramulecular hydrogel based on a dicationic azobenzene-bridged pyridinium hydrogelator

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Chinese Chemical Letters 2019年第3期30卷 707-709页

作者： Si-Tai Zheng Huan-Huan Yin Zhao-guang Ma Nan-Li Sheng tian-guang zhan Xiao-Yang Yan Jiecheng Cui Li-Juan Liu Kang-Da zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life Science Zhejiang Normal University Xingzhi College of Zhejiang Normal University

Low-molecular-weight supramolecular hydrogels are of significant attractive soft materials as particular functions can be facilely introduced by the straightforward fabrication of such self-assembled systems. In this study, an azobenzene-bridged dicationic pyridinium salt was synthesized, from which photoresponsive supramolecular hydrogel could be fabricated through the π-π stacking and hydrophobic interactions in the aqueous solution. By taking advantages of the UV-vis light induced E/Z photoisomerization behaviors of the incorporated azobenzene photochromophore, reversible gel-sol transformation of such supramolecular hydrogel could be achieved under the alternating UV-vis irradiation conditions. We believed that this photoresponsive supramolecular hydrogel will be a good supplementary in the creation of intelligent soft material.

关键词： Supramolecular self-assembly Hydrogels Photo-responsiveness Azobenzenes Smart soft materials

Viologen derivatives with extendedπ-conjugation structures:From supra-/molecular building blocks to organic porous materials

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Chinese Chemical Letters 2020年第7期31卷 1757-1767页

作者： Xiao-He Zhou Yu Fan Wan-Xia Li Xiang zhang Rong-Ran Liang Feng Lin tian-guang zhan Jiecheng Cui Li-Juan Liu Xin Zhao Kang-Da zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life ScienceZhejiang Normal UniversityJinhua 321004China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China College of Science Department of PhysicsShanghai UniversityShanghai 200444China College of Chemical Engineering Hunan Chemical Vocational Technology College.Zhuzhou 310027China

Recently,increasing atte ntion has been paid on extending theπ-conjugation structures ofviologens(1,1’-disubstituted-4,4’-bipyridylium salts)by incorporating planar aromatic units into the bipyridinium *** viologen derivative s with extendedπ-conjugation structures have been synthesized,including the N-termini aromatic substituted viologens,the extendedπ-conjugated viologens(denoted as ECVs)as well as theπ-conjugated oligomeric viologens(denoted as COVs).These compounds typically exhibit interesting properties distinguished from those of an isolated viologen unit,which make them as new class of electron deficient supra-/molecular building blocks in supramolecular chemistry and materials *** this review,we would like to highlight the recent advances of viologen derivatives with extendedπ-conjugation structures in versatile applications ranging from electrochromic and energy storage materials,the ECV/COV-based supramolecular self-assembly systems including the linear supramolecular polymers and 2D/3D supramolecular organic frameworks(SOFs),to the viologen-based covalent organic frameworks(COFs)/*** hope this review will serve as an in-time summary worthy of referring,more importantly,to provide inspiration in the rational design of novel molecules with unexplored properties and functions.

关键词： π-Conjugated viologens Self-assembly Supramolecular polymers Supramolecular organic frameworks Ionic organic porous materials

Toward a Two-Dimensional Supramolecular Organic Framework with High Degree of Internal Order via Amphiphilic Modification

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CCS Chemistry 2022年第1期4卷 141-150页

作者： Zhi-Jian Yin Shu-Yan Jiang Na Liu Qiao-Yan Qi Zong-Quan Wu tian-guang zhan Xin Zhao Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032 Department of Polymer Science and Engineering School of Chemistry and Chemical EngineeringHefei University of TechnologyAnhui ProvinceHefei 230009 Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Life SciencesZhejiang Normal UniversityJinhua 321004

Solution-phase self-assembly of two-dimensional(2D)networks with a high degree of internal order and long-range periodicity is a great ***,we report a rational design to improve 2D self-assembly in water through amphiphilic modification of the building *** amphiphilic tritopic molecule(1)is designed and synthesized by introducing three hydrophilic oligo(ethylene glycol)moieties and three hydrophobic hexyl *** assembly of 1 and cucurbit[8]uril(CB[8])leads to the formation of a Janus 2D supramolecular organic framework(SOF),which further creates unique bilayer supramolecular networks and exhibits an unprecedentedly high degree of internal order and long-range *** contrast,the assembly of a nonamphiphilic analog(2)with CB[8]only generates a 2D SOF with a lower degree of internal order,suggesting that the inherent amphiphilicity of 1 plays a crucial role in improving its 2D self-assembly in aqueous phase.

关键词： self-assembly supramolecular organic frameworks two-dimensional amphiphilicity internal order

成都大熊猫繁育研究基地入境游客满意度评价实证研究

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旅游学刊 2009年第3期24卷 36-41页

作者：刘妍唐勇田光占廖骏四川师范大学外事学院四川成都610110 成都理工大学商学院四川成都610059 成都理工大学地球科学学院四川成都610059 成都大熊猫繁育研究基地园林基建部四川成都610081

成都大熊猫繁育研究基地由于其占有绝对优势的区位条件,已成为中国展示大熊猫最重要的窗口,近年来,其入境游客的比例远远高于国内游客,因此,对入境游客满意度的研究尤为重要。在目前对该熊猫基地领域的研究尚处于空白的情况下,本文基于... 详细信息

成都大熊猫繁育研究基地由于其占有绝对优势的区位条件,已成为中国展示大熊猫最重要的窗口,近年来,其入境游客的比例远远高于国内游客,因此,对入境游客满意度的研究尤为重要。在目前对该熊猫基地领域的研究尚处于空白的情况下,本文基于深度访谈和问卷调查,采用SPSS11.5统计软件对调查结果进行了较为详细的人口学特征分析,再结合I/P分析法,对吸引力因子重要性、满意度,以及期望值与满意度进行对比分析,最后综合定性和定量研究结论,提出了进一步开发的意见和建议,旨在提高该景区的可持续发展能力,增强入境游客满意度,尽快建设成成熟的国际旅游景区。同时,也为同类型旅游区的建设和发展提供了可资借鉴的数据。

关键词：成都大熊猫繁育研究基地入境游客满意度评价实证研究

“5.12汶川大地震”后成都大熊猫繁育研究基地入境游客旅游动机研究

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成都理工大学学报（社会科学版） 2009年第2期17卷 17-22页

作者：刘妍唐勇田光占廖骏四川师范大学外事学院成都610110 成都理工大学商学院成都610059 成都理工大学地球科学学院成都610059 成都大熊猫繁育研究基地园林基建部成都610081

利用推-拉因素理论对5.12汶川特大地震以后熊猫基地入境游客旅游动机所做的调查研究显示:不同地域的旅游者在内部推力旅游动机方面非常相似;在外部拉力因素方面,主要包括自然和文化资源、设施、服务管理等方面,只是不同类型的旅游地对... 详细信息

利用推-拉因素理论对5.12汶川特大地震以后熊猫基地入境游客旅游动机所做的调查研究显示:不同地域的旅游者在内部推力旅游动机方面非常相似;在外部拉力因素方面,主要包括自然和文化资源、设施、服务管理等方面,只是不同类型的旅游地对游客产生的吸引力侧重点不一样;对于一个综合性旅游地而言,旅游支持系统和多样性资源两项因子应得到高度重视。

关键词：推-拉因素理论旅游动机入境游客相关分析成都大熊猫繁育研究基地

Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui zhang Zhi-Lai zhan guang-Lu Chang Yan Gao Xia Li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

Basic properties of sintering dust from iron and steel plant and potassium recovery

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Journal of Environmental Sciences 2013年第6期25卷 1226-1234页

作者： guang zhan zhancheng Guo State Key Laboratory of Advanced Metallurgy University of Science and Technology

With the production of crude steel, China produces several million tons of sintering dusts which contain a great deal of valuable metals such as, K, Na, Zn, Pb. If discharged directly without adequate treatment, these elements can lead to adverse effects on the environment. Therefore, it is very necessary to determine how to separate these elements from the dust before discharge, Several physical and chemical detection methods were used to study the basic properties of sintering dust. At the same time, preliminary experiments on the recovery of the potassium resources from the sintering dust were carried out. The mean particle size of the electrostatic precipitator （ESP） dust determined by a laser granulometer was 41.468 ~tm. Multi-point BET and single-point BET analysis showed that the surface area of the ESP dust was 2.697 mZ/g. XRD measurements detected the following phases in the ESP dust： Fe203, Fe304, KC1 and NaC1, and Fe203, Fe304 and SiO2 in the water-washed dust. SEM-EDS results proved that in the ESP dust, K mostly existed in the form of KC1 particles without being coated. Leaching experiments showed that the KCI in the ESP dust could be separated and recovered by water leaching and fractional crystallization. Through the recovery experiments, the yield of K-Na vaporized crystalline salt was 18.56%, in which the mass fractions of KCl, NaCl, CaSO4 and K2SO4 were about 61.03%, 13.58%, 14.03% and 9.97%, respectively. This process is technically viable and considerable in economic benefit. There was almost no secondary pollution produced in the whole recovery process.

关键词： sintering dust physicochemical analysis recovery experiment potassium resource