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| 1 | Current status of research and application in vascular stents显示文摘Cardiovascular diseases have been the leading cause of death in modern society.Using vascular stents to treat these coronary and peripheral artery diseases has been one of the most effective and rapidly adopted medical interventions.During the twenty-five years’development of vascular stents,revolutionary cardiovascular stents like drug eluting stents and endothelial progenitor cells capture stents have emerged.In this review,the evolution of vascular stents is summarized,aiming to provide a glimpse into the future of vascular stents.Advanced designs,focusing on the investigations of new substrates,new platforms,new drugs and new biomolecules are currently under evaluation with promising clinical studies.The concept of'time sequence functional stent'has been raised in this paper.It presents anti-proliferative properties in the first phase after implantation and subsequently support endothelialization.It also shows long-term inertness without release of toxic ions or toxic degradation products.The success of this concept is briefly presented with a clinical study in this model stents. | QI PengKai YANG Ying MAITZ F Manfred HUANG Nan | 2013 | Chinese Science Bulletin2013，58，35： | 3 |
| 2 | Poly-dopamine, poly-levodopa, and poly-norepinephrine coatings: Comparison of physico-chemical and biological properties with focus on the application for blood-contacting devices显示文摘Thanks to its simplicity,versatility,and secondary reactivity,dopamine self-polymerized coatings(pDA)have been widely used in surface modification of biomaterials,but the limitation in secondary molecular grafting and the high roughness restrain their application in some special scenarios.Therefore,some other catecholamine coatings analog to pDA have attracted more and more attention,including the smoother poly-norepinephrine coating(pNE),and the poly-levodopa coating(pLD)containing additional carboxyl groups.However,the lack of a systematic comparison of the properties,especially the biological properties of the above three catecholamine coatings,makes it difficult to give a guiding opinion on the application scenarios of different coatings.Herein,we systematically studied the physical,chemical,and biological properties of the three catecholamine coatings,and explored the feasibility of their application for the modification of biomaterials,especially cardiovascular materials.Among them,the pDA coating was the roughest,with the largest amount of amino and phenolic hydroxyl groups for molecule grafting,and induced the strongest platelet adhesion and activation.The pLD coating was the thinnest and most hydrophilic but triggered the strongest inflammatory response.The pNE coating was the smoothest,with the best hemocompatibility and histocompatibility,and with the strongest cell selectivity of promoting the proliferation of endothelial cells while inhibiting the proliferation of smooth muscle cells.To sum up,the pNE coating may be a better choice for the surface modification of cardiovascular materials,especially those for vascular stents and grafts,but it is still not widely recognized. | Xing Tan Peng Gao Yalong Li Pengkai Qi Jingxia Liu Ru Shen Lianghui Wang Nan Huang Kaiqin Xiong Wenjie Tian Qiufen Tu | 2021 | Bioactive Materials2021，6，1： | 0 |
| 3 | Reinforced Lewis covalent bond by twinborn nitride heterostructure for lithium-sulfur batteries显示文摘The practical application of lithium-sulfur(Li-S)batteries,as promising next-generation batteries,is hindered by their shuttle effect and the slow redox kinetics.Herein,a tungsten and molybdenum nitride heterostructure functionalized with hollow metal-organic framework-derived carbon(W_(2)N/Mo_(2)N)was proposed as the sulfur host.The hollow spherical structure provides storage space for sulfur,enhances electrical conductivity,and inhibits volume expansion.The metal atoms in the nitrides bonded with lithium polysulfides(Li PSs)through Lewis covalent bonds,enhancing the high catalytic activity of the nitrides and effectively reducing the energy barrier of Li PSs redox conversion.Moreover,the high intrinsic conductivity of nitrides and the ability of the heterostructure interface to accelerate electron/ion transport improved the Li+transmission.By leveraging the combined properties of strong adsorption and high catalytic activity,the sulfur host effectively inhibited the shuttle effect and accelerated the redox kinetics of Li PSs.High-efficiency Li+transmission,strong adsorption,and the efficient catalytic conversion activities of Li PSs in the heterostructure were experimentally and theoretically verified.The results indicate that the W_(2)N/Mo_(2)N cathode provides stable,and long-term cycling(over 2000 cycles)at 3 C with a low attenuation rate of 0.0196%per cycle.The design strategy of a twinborn nitride heterostructure thus provides a functionalized solution for advanced Li-S batteries. | Yaochen Song Pengkai Tang Yanjie Wang Yi Wang Linnan Bi Qi Liang Liang He Qingyu Xie Yiyong Zhang Peng Dong Yingjie Zhang Yao Yao Jiaxuan Liao Sizhe Wang | 2024 | Journal of Energy Chemistry2024，88，1： | 0 |
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