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Recent advances in cardiovascular stent for treatment of in-stent restenosis:Mechanisms and strategies

Chinese Journal of Chemical engineering 2021年第9期34卷 12-29页

作者： Hang Yao Yuwei He Jinrong Ma Lang Jiang Jingan Li Jin Wang Nan Huang Key Laboratory of Advanced Technology for Materials of the Education Ministry School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Department of Chemical Engineering University of WashingtonSeattle 98195USA Department of Pharmaceutics School of PharmacyFudan University&Key Laboratory of Smart Drug DeliveryMinistry of EducationShanghai 201203China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450000China

Treatments of atherogenesis,one of the most common cardiovascular diseases(CVD),are continuously being made thanks to innovation and an increasingly in-depth knowledge of percutaneous transluminal coronary angioplasty(PTCA),the most revolutionary medical procedure used for vascular *** with an expanding balloon,vascular stents used at stricture sites enable the long-time restoration of vascular ***,complication after stenting,in-stent restenosis(ISR),hinders the advancement of vascular stents and are associated with high medical costs for patients for decades ***,the development of a high biocompatibility stent with improved safety and efficiency is urgently *** review provides an overview of current advances and potential technologies for the modification of stents for better treatment and prevention of *** particular,the mechanisms of in-stent restenosis are investigated and summarized with the aim to comprehensively understanding the pathogenesis of stent ***,according to different therapeutic functions,the current stent modification strategies are reviewed,including polymeric drug eluting stents,biological friendly stents,prohealing stents,and gene ***,the review provides an outlook of the challenges in the design of stents with optimal ***,this review is a valuable and practical guideline for the development of cardiovascular stents.

关键词： Cardiovascular stent modification In-stent restenosis Late stent thrombosis Re-endothelialization Inflammatory modulation

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Anti/De-Icing Superhydrophobic Coating with Durability and Self-Healing by Infiltrating Photothermal Self-Stratifying Organic Layers into Plasma-Sprayed Porous Al2o3-13%Tio2 Underlayer

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SSRN 2024年

作者： Yang, Xiangming Liu, Yan Zhong, Yuting Chen, Hui Key Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu610031 China

Superhydrophobic coatings simultaneously exhibiting high substrate binding, mechanical durability and self-healing properties are of great significance for anti/de-icing applications. In this study, we fabricated a high substrate binding and mechanical durability anti/de-icing superhydrophobic coatings (SL-AP/SPS-SiO2) with self-healing performance by spray-coating a photothermal self-healing organic layers (AP/SPS-SiO2) plasma-sprayed porous Al2O3-13%TiO2 underlayer (SL),the resulting soft-hard interlocking structure significantly increased the adhesion strength of the coating to 16.7 MPa while reducing the ice adhesion strength to 46.5 kPa. In the as-obtained organic layers,self-stratifying acrylic resin (AR)/20%polymethylsiloxane (PDMS) (AP), not only enhanced the bonding strength with the underlayer but also imparted photothermal self-healing capability to the coating through the action of the photothermal agent (SPS-SiO2). And sodium alginate (SA) guided the self-oxidative polymerization of dopamine (DA) and its deposition on hydrophilic SiO2 to form a π-π stacked fiber structure photothermal agent (SPS), after hydrophobic SiO2 modification increased the coating’s roughness and photothermal performance. Remarkably, the coating achieved a contact angle of up to 158.4° and a rolling angle of 3.5°, maintaining its superhydrophobic properties even after exposure to acid-base immersion and mechanical abrasion. Furthermore, the coating exhibited self-healing capabilities in superhydrophobicity against O2 plasma etching, with a contact angle recovery rate of up to 98.9% after undergoing 10 cycles of O2 plasma etching and light exposure. Such mechanical and chemical stabilities with self-healing ability are favourable to prolong the lifespan for anti/de-icing superhydrophobic applications. © 2024, The Authors. All rights reserved.

关键词： Plasma etching

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Exploiting the donor-acceptor-additive interaction’s morphological effect on the performance of organic solar cells

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Aggregate 2024年第2期5卷 316-327页

作者： Lu Chen Ruijie Ma Jicheng Yi Top Archie Dela Peña Hongxiang Li Qi Wei Cenqi Yan Jiaying Wu Mingjie Li Pei Cheng He Yan Guangye Zhang Gang Li College of New Materials and New Energies Shenzhen Technology UniversityShenzhenChina Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and TechnologyHong KongChina Department of Electrical and Electronic Engineering Research Institute for Smart Energy(RISE)Photonic Research Institute(PRI)The Hong Kong Polytechnic UniversityHong KongChina Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongChina The Hong Kong University of Science and Technology Function HubAdvanced Materials ThrustGuangzhouP.R.China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduChina

Organic solar cells(OSCs)have demonstrated over 19%power conversion efficiency(PCE)with the help of material innovation and device ***-working with newly designed materials,traditional solvent additives,1-chloronaphthalene(CN),and 1,8-diodooctane(DIO)are still powerful in morphology modulation towards satisfying ***,we chose recently reported high-performance polymer donors(PM6&D18-Fu)and small molecular acceptors(Y6&L8-BO)as active layer materials and processed them by different conditions(CN or DIO or none).Based on corresponding 12 groups of device results,and their film morphology characterizations(both ex-situ and in-situ ones),the property-performance relationships are revealed case by *** is thereby supposed to be taken as a successful attempt to demonstrate the importance and complexity of donor-acceptoradditive interaction,since the device performance and physics analyses are also tightly combined with morphology ***,ternary blend construction for PCE improvement provides an approaching 19%level and showcases the potential of understanding-guided-optimization(UGO)in the future of OSCs.

关键词： material combinations morphology modulation organic solar cells power conversion efficiency solvent additives

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Development of an interpretable QSPR model to predict the octanol-water partition coefficient based on three artificial intelligence algorithms

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Green Chemical engineering 2025年第2期6卷 193-199页

作者： Ao Yang Shirui Sun Lu Qi Zong Yang Kong Jaka Sunarso Weifeng Shen College of Safety Science and Engineering Chongqing University of Science and TechnologyChongqing401331China Beijing Institute of Technology Chongqing Innovation Center Chongqing401135China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing400044China School of Chemistry and Chemical Engineering Yangtze Normal UniversityChongqing408100China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhou213164China School of Engineering and Technology Sunway UniversityNo.5Jalan UniversitiBandar SunwaySelangor Darul Ehsan47500Malaysia Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang TigaKuching93350SarawakMalaysia

This study aims to significantly improve existing quantitative structure-property relationship(QSPR)models for predicting the octanol-water partition coefficient(KOW).This is because accurate predictions of KOW are crucial for assessing the environmental behavior and bioaccumulation potential of *** models have reported determination coefficient(R^(2))values between 0.9451 and 0.9681,and this research seeks to exceed these *** machine learning(ML)models are explored,i.e.,feed-forward neural networks(FNN),extreme gradient boosting(XGBoost),and random forest(RF).Using a dataset of 14,610 solvents(14,580 after data cleaning)and 21 molecular descriptors derived from SMILES representations,we rigorously evaluate these models based on R^(2),mean absolute error(MAE),root mean squared error(RMSE),and mean relative error(MRE).Notably,the best model developed,the XGBoost-based QSPR,demonstrated exceptional performance,exhibiting an impressive R^(2)value of 0.9772,surpassing benchmarks set by prior research ***,shapley additive explanation(SHAP)analysis is also employed for model interpretation,and it is revealed that the top five influential input features include SMR_VSA8,SMR_VSA3,Kappa2,HeavyAtomCount,and fr_*** study not only sets a new benchmark for KOW prediction accuracy but also enhances the interpretability of QSPR models.

关键词： Octanol-water partition coefficient Environmental property QSPR Interpretable model Machine learning

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Flexible dopamine-sensing fiber based on potentiometric method for long-term detection in vivo

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science China Chemistry 2021年第10期64卷 1763-1769页

作者： Liyuan Wang Jiawei Chen Jiajia Wang Hongjian Li Chuanrui Chen Jianyou Feng Yue Guo Hongbo Yu Xuemei Sun Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Scienceand Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China Vision Research Laboratory School of Life SciencesState Key Laboratory of Medical NeurobiologyCollaborative Innovation Centre for Brain ScienceFudan UniversityShanghai 200438China

Achieving real-time,continuous and long-term monitoring of dopamine(DA)in vivo is essential for revealing brain functions and preventing and treating neurogenic ***,it remains challenging to achieve a low limit of detection(LOD)and high neuron-compatibility at the same time for the current microsensors,resulting in the failure of long-term and accurate detection of DA in vivo.A DA-sensing fiber was achieved by the potentiometric method to possess a low LOD of 5 nM,1-3 orders of magnitude lower than amperometry and differential-pulse *** sensing fiber showed a wide linear range from 5 to 185 nM that well matched the DA concentration(26-40 nM)in *** implantation,the sensing fiber showed no influence on the firing rates of neurons with the potentiometric test,indicating high *** was then integrated with electrophysiology to simultaneously monitor DA variation and electrical signal in the brain,with stable monitoring of DA change in vivo for 8 *** sensing fiber was flexible and stably worked after hundreds of bending,and it showed high sensitivity even after protein adsorption,thus offering a reliable tool for neuroscience.

关键词： carbon nanotube fiber potentiometric implantable long-term dopamine detection

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Nitric oxide-generating self-assembling peptide hydrogel coating for enhancing hemocompatibility of blood-contacting devices

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Journal of materials science & Technology 2022年第36期131卷 106-114页

作者： Hao Li Qianru Guo Qiufen Tu Kaiqin Xiong Wei Wang Lei Lu Wentai Zhang Nan Huang Zhilu Yang Key Laboratory of Advanced Technology for Materials of Education Ministry School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Affiliated Dongguan People’s Hospital Southern Medical UniversityDongguan 523059China State Key Laboratory of Molecular Engineering of Polymers(Fudan University) Shanghai 200438China Department of Cardiology Zigong First People’s HospitalZigong 643000China School&Hospital of Stomatology Wenzhou Medical UniversityWenzhou 325035China Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Guangdong Provincial Key Laboratory of Shock and Microcirculation Guangzhou 510080China

Thrombosis is the major stumbling block to the clinical application of blood-contacting ***,a quick and easy surface engineering strategy of hydrogel coating with the therapeutic gas nitric oxide(NO)generation was reported to realize up-regulation of cyclic guanosine monophosphate(c GMP)and improve hemocompatibility for diverse metal *** first introduce the active centre selenocysteine of glutathione peroxidase(GPx)to the self-assembling peptide(RADA)4,obtaining a functionalized *** the hydrogel is directly coated on the 316L stainless steel(SS)for catalytically generating NO from endogenous s-nitrosothiols(RSNO).The generated NO endows the coated surface with regulation of platelet behavior and reduction of plasmatic coagulation activation and complement system activation,hence improving antithrombotic ability in vitro and ex ***,our NO-generating hydrogel coating surface engineering strategy provides a novel solution to remove the obstacle about thrombosis of blood-contacting devices in clinic.

关键词： Blood-contacting device NO generation Self-assembling peptide Hydrogel coating Antithrombotic ability

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Influence of crevice width on sulfate-reducing bacteria(SRB)-induced corrosion of stainless steel 316L

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Corrosion Communications 2021年第4期4卷 33-44页

作者： Cong Wu Zhaopeng Wang Zhan Zhang Bowei Zhang Guojia Ma Qiong Yao Zhaohong Gan Junsheng Wu Xiaogang Li Institute for Advanced Materials and Technology University of Science and Technology Beijing Aeronautical Key Laboratory of Advanced Surface Engineering Technology China Aviation Manufacturing Technology Institute Key Laboratory of Space Lauching Site Reliability Technology

In the present work, the distribution of sulfate-reducing-bacteria(SRB) inside the crevice and the effect of crevice width on SRB-induced corrosion of stainless steel 316L(SS 316L) were systematically investigated. A cambered crevice configuration consisting of a convex lens and a wire beam electrode(WBE) was employed to measure the current and potential distributions under different crevice widths. Subsequently, scanning electronic microscopy(SEM), electrochemical impedance spectroscopy(EIS) and X-ray photoelectron spectroscopy(XPS) were adopted to study SRB-induced corrosion behavior of SS 316L in different crevice locations. Results show that crevice width plays an essential role in corrosion on SS 316L in crevice environment with SRB. The most severe corrosion with dense pits occurred at the crevices with 150 μm in width due to the combined effects of microbiological corrosion and crevice corrosion. In narrow crevices, corrosion is much slighter since SRB can hardly enter into the crevices to induce corrosion. In contrast, the crevices with 700 μm in width suffer the mildest corrosion because the influence of crevice corrosion is negligible with a weakened crevice corrosion tendency. Additionally, it was found that SRB could affect the composition of the passive film and destroy its compactness, thus accelerate the crevice corrosion of SS 316L in artificial seawater. The findings of this work are beneficial to understanding the mechanisms of MIC-induced corrosion in various environments.

关键词： SS 316L SRB WBE Crevice corrosion

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In-Situ Oxidation of Coooh Decorated on P25 Heterostructure as the Co-Catalyst for Enhanced Photodegradation of Organic Pollutants

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SSRN 2024年

作者： Jiang, Haibo Yang, Kaina Cao, Shenyang Yu, Shengwei Sun, Xue Shou, Shengqiu Shen, Jianhua Key Laboratory for Ultrafine Materials Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai200237 China State Key Laboratory of Advanced Special Steel School of Materials Science and Engineering Shanghai University Shanghai200444 China

Surface modification of nanoscale titanium dioxide (P25) for photocatalysts can improve carrier separation efficiency by constructing heterojunction structures and reduce reaction energy barriers by introducing co-catalysts. This study describes the successful deposition of CoOOH particles on the P25 surface using solvent-based and in-situ oxidation methods, resulting in a type II P25-CoOOH heterostructure. The photocurrent of P25-CoOOH exhibited a 630% increase compared to pure P25, while showing a reduced surface potential barrier of 2.21 eV. Density functional theory (DFT) simulations demonstrated that the work function of the CoOOH (001) surface (Φ=6.639 eV) is significantly lower than that of P25 (101) (Φ=7.238 eV). Photoluminescence (PL) spectra and active species trapping experiments demonstrated a slower rate of electron and hole recombination in P25-CoOOH compared to pure P25, which effectively reduces electron-hole pair recombination and significantly enhances its photocatalytic activity for degrading methylene blue (MB) by 3.41 times that of P25. These findings suggest that CoOOH not only forms a heterojunction with P25 to improve carrier separation efficiency but also serves as a co-catalyst, increasing the number of active sites on the surface. © 2024, The Authors. All rights reserved.

关键词： Heterojunctions

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Microstructural analysis of organic matter in shale by SAXS and WAXS methods

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Petroleum science 2022年第3期19卷 979-989页

作者： Kou-Qi Liu Zhi-Jun Jin Lian-Bo Zeng Meng-Di Sun Bo Liu Ho Won Jang Majid Safaei-Farouji Mohammadreza Shokouhimer Mehdi Ostadhassan Institute of Energy Peking UniversityBeijing100871China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China State Key Laboratory of Continental Shale Accumulation and Efficient Development Ministry of EducationNortheast Petroleum UniversityDaqingHeilongjiang 163318China Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoul08826Republic of Korea School of Geology College of ScienceUniversity of TehranTehranIran Department of Materials Science and Engineering Seoul National UniversitySeoul08826Republic of Korea Department of Geology Ferdowsi University of MashhadMashhadIran

Characterizing the kerogen-hosted pore structures is essential to understand the adsorption,transport and storage potential in organic-rich shale *** this paper,we first separated the organic matter(kerogen)from the mineral matrix in four different shale samples of the Bakken Formation with different thermal maturities and then analyzed their chemical compositions using the wide-angle X-ray scattering(WAXS)***,we acquired small-angle X-ray scattering(SAXS)to characterize the structure of the organic matter and see how these two will *** WAXS results showed that the isolated kerogens have high purity(free of inorganic minerals)and retain different chemical ***,SAXS analysis revealed that the isolated kerogens have similar radius of gyration(R_(g))which is around 90Åand the molecules are in the compact *** on the pore size distribution analysis from the SAXS data,two main peaks were found in all of these four samples with one peak less than 40Åand the other one larger than 1000Å.Also,the TEM images revealed that Sample 1 is abundant in pores with sizes around 20 nm while Sample 2 does not have pores of that size,which agrees with the results from the pore size distribution that was obtained from the SAXS ***,this study exhibits how different analytical instruments can provide us with useful information from complex structures of geomaterials.

关键词： Isolated kerogen Bakken shale SAXS WAXS Pore structures

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Multifunctional hydrogel enhances bone regeneration through sustained release of Stromal Cell-Derived Factor-1αand exosomes

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Bioactive materials 2023年第7期25卷 460-471页

作者： Lang Chen Chenyan Yu Yuan Xiong Kai Chen Pei Liu Adriana C.Panayi Xiufeng Xiao Qian Feng Bobin Mi Guohui Liu Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan430022China Department of Physics and Center for Hybrid Nanostructure(CHyN) University of HamburgLuruper Chaussee 149Hamburg 22761HamburgGermany Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering College of Chemistry and Materials ScienceFujian Normal UniversityFuzhouFujian350007China Division of Plastic Surgery Brigham and Women’s HospitalHarvard Medical SchoolBostonMA02215USA Key Laboratory of Biorheological Science and Technology Ministry of Education College of BioengineeringChongqing UniversityChongqing400044China

Fracture nonunion remains a great challenge for orthopedic *** repair comprises of three phases,the inflammatory,repair and remodeling *** advancements have been made in the field of bone repair,including development of strategies to balance the M1/M2 macrophage populations,and to improve osteogenesis and ***,such developments focused on only one or the latter two phases,while ignoring the inflammatory phase during which cell recruitment *** this study,we combined Stromal Cell-Derived Factor-1α(SDF-1α)and M2 macrophage derived exosomes(M2D-Exos)with a hyaluronic acid(HA)-based hydrogel precursor solution to synthesize an injectable,self-healing,adhesive HA@SDF-1α/M2D-Exos *** HA hydrogel demonstrated good biocompatibility and hemostatic ability,with the 4%HA hydrogels displaying great antibacterial activity against gram-negative *** and gram-positive *** and Methicillin-resistant Staphylococcus aureus(MRSA).Synchronously and sustainably released SDF-1αand M2D-Exos from the HA@SDF-1α/M2D-Exos hydrogel enhanced proliferation and migration of human bone marrow mesenchymal stem cell(HMSCs)and Human Umbilical Vein Endothelial Cells(HUVECs),promoting osteogenesis and angiogenesis both in vivo and in ***,the developed HA@SDF-1α/M2D-Exos hydrogel was compatible with the natural healing process of fractures and provides a new modality for accelerating bone repair by coupling osteogenesis,angiogenesis,and resisting infection at all stages.

关键词： Hydrogel SDF-1α Macrophage Exosomes Fracture healing

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