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advanced Functional materials 2015年第12期25卷

作者： Qiulong Wei Shuangshuang Tan Xiaoyi Liu Mengyu Yan Fengchao Wang Qidong Li Qinyou An Ruimin Sun Kangning Zhao Hengan Wu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing WUT‐Harvard Joint Nano Key Laboratory Wuhan University of Technology Hubei Wuhan 430070 China CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei Anhui 230027 China Cullen College of Engineering Department of Electrical and Computer Engineering University of Houston Houston TX USA

A C156 Molecular Nanocarbon: Planar/Rippled Nanosheets Hybridization

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Angewandte Chemie 2024年第6期137卷

作者： Ruihua Fu Xingyu Chen Fei Qiu Xinyue Liu Prof. Jianlong Xia Prof. Lei Zhang Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Lab of Organic-Inorganic Composites Beijing University of Chemical Technology 100029 Beijing P. R. China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology 430070 Wuhan P. R. China

A novel hybrid nanocarbon consisting of one rippled and two planar nanosheets has been synthesized and characterized. Two meso pairs of [5]helicenes are formed along the long molecular axis of the hybrid to connect rippled and planar subunits, leading to a stable conformation. It is shown that the hybrid possesses the individual electronic properties of the rippled and planar subunits. Compared to the rippled subunit, such hybrid has a better geometric match to C 60 and complexes with C 60 in a 1 : 1 stoichiometry, with the association constant on the order of 10 5 M −1 . The hybrid displays unusual anti -Kasha fluorescence emission. The transient absorption spectroscopy revealed that the singlet fission (SF) from higher level singlet excited states (S n ) is operative in the film of the hybrid.

关键词： nanocarbon hybridization nanosheet supramolecular complexation transient absorption

Immunocompetent Tissue-Engineered Cartilage Scaffold by 3d Bioprinting Combined with Mechanical Stimulation

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SSRN 2024年

作者： Huang, Yantong Zhu, Jing Li, Xiaohong Poudel, Abishek Jung Li, Basen Xiao, Lin School of Biomedical Engineering Sun Yat-Sen University Shenzhen Campus Shenzhen518107 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China The University of Queensland Australian Institute for Bioengineering and Nanotechnology Centre for Advanced Imaging AIBN building 75 St LuciaQLD4072 Australia Department of Radiology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China

Tissue engineering based on 3D bioprinting holds great potential in clinical cartilage reconstruction and in vivo graft repair. Recently, numerous studies have shown that mechanical stimulation plays an important role in cartilage formation and functionality maintenance. In addition, the immune mechanism of the body plays an important role in the occurrence, development, and treatment of articular cartilage injuries and diseases. However, the effects of 3D bioprinted hydrogel scaffolds combined with mechanical stimulation and immunomodulation on cartilage repair and regeneration has been scarely reported. In this study, we designed and prepared a Gelatin methacryloyl/hyaluronic acid methacryloyl (GelMA/HAMA-based) hydrogel scaffold incorporating Mn-doped dendritic mesoporous silica nanoparticles (Mn-DMSNs) for cartilage tissue engineering. In vitro experiments showed that constant compression stimulation could significantly upregulate the cartilage gene expression. This effect could be mediated by transforming growth factors- β (TGF-β) and Ca2+, which impacted the cartilage phenotype. Moreover, Mn-DMSNs could promote the transformation of macrophages from M1 to M2, which exhibited an immunomodulatory effect. Animal trials showed that the hydrogel scaffold combined with Mn-DMSNs and constant compression could reduce the levels of inflammatory factors and promote the repair of both bone and cartilage. Overall, the hydrogel scaffold, with its superior biocompatibility and chondrogenesis potential, could serve as a promising material for cartilage defect repair. © 2024, The Authors. All rights reserved.

关键词： Cartilage

A Mitochondrion-Targeting Two-Photon Photosensitizer with Aggregation-Induced Emission Characteristics for Hypoxia-Tolerant Photodynamic Therapy

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SSRN 2022年

作者： Jiang, Yihang Zhu, Wei Xu, Zhourui Zhang, Zhijun Tang, Shuo Fan, Miaozhuang Li, Zhengzheng Zhang, Jianyu Yang, Chengbin Law, Wing-Cheung Yong, Ken-Tye Wang, Dong Xu, Gaixia Tang, Ben Zhong Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging School of Biomedical Engineering Health Science Center Shenzhen University Guangdong Shenzhen518055 China Centre for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Material Science and Engineering Shenzhen University Guangdong Shenzhen518055 China Key Laboratory of Advanced Textile Materials and Manufacturing Technology Engineering Research Center for Eco-Dyeing & Finishing of Textiles Ministry of Education Zhejiang Sci-Tech University Hangzhou310018 China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon999077 Hong Kong Department of Industrial and Systems Engineering The Hong Kong Polytechnic University Hong Hum Kowloon999077 Hong Kong School of Biomedical Engineering The University of Sydney SydneyNSW2006 Australia MOE Key Laboratory of Macromolecular Synthesis and Functionalization China

In recent years, two-photon photodynamic therapy (TP-PDT) has received extensive attention in cancer treatment owing to its unique advantages of deep tissue penetration and high spatial-temporal controls. However, the high oxygen dependency of photosensitizers still remained as the major obstacle which undermined its overall therapeutic efficacy, especially in hypoxic-tolerant tumors. Exploration of new TP-PDT strategy with less-oxygen-dependency and subcellular organelle-targeting ability is an appealing yet seriously challenging task. In this work, a mitochondrion-targeting TP-PDT protocol based on type-I PSs with aggregation-induced emission (AIE) characteristics is proposed for the first time. Of the two synthesized AIE-active PSs, TPABP-Ir is demonstrated superior reactive oxygen species (ROS) production (both type I&II) owing to the doping of Ir(III). After encapsulation into bovine serum albumin (BSA) matrix, TPABP-Ir@BSA nanoparticles (Ir-NPs) are capable of realizing mitochondrion-targeting, high ROS production, and suppression of tumor growth under 880 nm femtosecond laser excitation. This study provides a novel treatment strategy which maximizes the PDT efficacy and offers a conceptual but practical paradigm for cancer treatment in translational nanomedicine. © 2022, The Authors. All rights reserved.

关键词： Diseases

Charge equilibration of Laser-accelerated Carbon Ions in Foam Target

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arXiv

arXiv 2023年

作者： Ma, Bubo Ren, Jieru Liu, Lirong Wei, Wenqing Chen, Benzheng Zhang, Shizheng Xu, Hao Hu, Zhongmin Li, Fangfang Wang, Xing Yin, Shuai Feng, Jianhua Zhou, Xianming Gao, Yifang Li, Yuan Shi, Xiaohua Li, Jianxing Ren, Xueguang Xu, Zhongfeng Deng, Zhigang Qi, Wei Wang, Shaoyi Fan, Quanping Cui, Bo Wang, Weiwu Yuan, Zongqiang Teng, Jian Wu, Yuchi Cao, Zhurong Zhao, Zongqing Gu, Yuqiu Cao, Leifeng Zhu, Shaoping Cheng, Rui Lei, Yu Wang, Zhao Zhou, Zexian Xiao, Guoqing Zhao, Hongwei Hoffmann, Dieter H.H. Zhou, Weimin Zhao, Yongtao MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Science Xi’an Jiaotong University Xi’an710049 China Science and Technology on Plasma Physics Laboratory Laser Fusion Research Center China Academy of Engineering Physics Mianyang621900 China Advanced Materials Testing Technology Research Center Shenzhen University of Technology Shenzhen518118 China Institute of Applied Physics and Computational Mathematics Beijing100094 China Graduate School China Academy of Engineering Physics Beijing100088 China Institute of Modern Physics Chinese Academy of Sciences Lanzhou710049 China

The charge equilibration of laser-accelerated carbon ion beams in 2 mg/cm3 foam target was investigated experimentally. The ions were generated through target normal sheath acceleration mechanism in laser-foil interaction scheme. This allows to get the equilibrium charge state in wide energy range near Bragg peak within a single shot. By using foam, the charge equilibration measurement in density regime between gas and solid state was firstly reached out experimentally. It was found that the theoretical predictions with tabulated cross section data for gas target greatly underestimated the charge states. The experimental data are in close agreement with both semi-empirical formula as well as rate equation predictions based on ion-solid interactions. The important role of target density effects that increase the ionization probability and decrease the electron capture probability through frequent multi-collisions in foam are demonstrated. The double electron processes are shown to have little influence on the average charge states. The findings are essential for high energy density physics research where the foams are widely used, and have impacts on a broad range of applications in medical, biological and material fields. The method also provides a new approach to investigate the interaction mechanism of swift heavy ions in matter by taking advantage of the laser-accelerated short-pulse wide-energy range ions. © 2023, CC BY.

关键词： Carbon

Donor-Acceptor Molecule with Tict Character: A New Design Strategy for Organic Photothermal Material in Solar Energy

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SSRN 2023年

作者： Wang, Chenguang Dai, Jianan Zhao, Meng Qi, Shuo Liu, Jing Jia, Tao Liu, Fangmeng Sun, Peng Li, Bo Zhou, Ji Lu, Geyu State Key Laboratory of Integrated Optoelectronics Key Laboratory of Advanced Gas Sensors of Jilin Province College of Electronic Science & Engineering Jilin University Changchun130012 China Key Laboratory of Forest Plant Ecology Ministry of Education Engineering Research Center of Forest Bio-Preparation College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University Harbin150040 China Hebei Key Laboratory of Hazardous Chemicals Safety and Control Technology School of Chemical Safety North China Institute of Science and Technology Langfang065201 China State Kay Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China International Center of Future Science Jilin University Changchun130012 China

Organic photothermal materials, particular the donor-acceptor (D-A) type ones, have attracted increased attention because they could efficiently transform solar energy to heat in an environmentally friendly manner. So far, there are many strategies to improve the fluorescence of D-A type molecules, while how to quench the fluorescence via non-radiative decay process and thus maximize the solar-thermal conversion efficiency is rarely investigated. Herein, a new design strategy is proposed to overcome this bottleneck, that is, formatting a unique twisted intramolecular charge-transfer (TICT) excitation state for the D-A type molecule. To demonstrate this new design strategy, three D-A molecules TPA-BTO, TPA-BTO-Py+ and GTPA-BTO-Py+ are synthesized with the consideration of employing stronger donor/acceptor moieties. The photophysical measurements and theoretical calculations reveal that these molecules display strong tendency to form TICT state, and the stronger donor/acceptor would significantly promote the TICT-based non-radiative decay process. Consequently, the target molecule GTPA-BTO-Py+ is totally non-fluorescent and could efficiently transform the absorbed solar energy to heat. Further combined with the wide absorption up to 1300 nm, GTPA-BTO-Py+ solid displays a high solar-thermal conversion efficiency of 20.5%. Finally, the utility of GTPA-BTO-Py+ as highly efficient photothermal material in solar energy is highlighted by water evaporation and thermoelectric generation. © 2023, The Authors. All rights reserved.

关键词： Molecules

Microdevices: Carbon-MEMS-Based Alternating Stacked MoS2@rGO-CNT Micro-Supercapacitor with High Capacitance and Energy Density (Small 26/2017)

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Small 2017年第26期13卷

作者： Wei Yang Liang He Xiaocong Tian Mengyu Yan Hui Yuan Xiaobin Liao Jiashen Meng Zhimeng Hao Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China Department of Materials Science and NanoEngineering Rice University Houston TX 77005 USA Department of Chemistry University of California Berkeley CA 94720 USA

Three-dimensional structural and compositional inhomogeneity in zeolites unraveled by low-dose electron ptychography

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arXiv

arXiv 2022年

作者： Zhang, Hui Li, Guanxing Zhang, Jiaxing Zhang, Daliang Chen, Zhen Liu, Xiaona Guo, Peng Zhu, Yihan Chen, Cailing Liu, Lingmei Guo, Xinwen Han, Yu Electron Microscopy Center South China University of Technology Guangzhou510640 China School of Emergent Soft Matter South China University of Technology Guangzhou510640 China Thuwal23955-6900 Saudi Arabia State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials School of Chemical Engineering Dalian University of Technology Dalian116024 China Multi-scale Porous Materials Center Institute of Advanced Interdisciplinary Studies School of Chemistry and Chemical Engineering Chongqing University Chongqing400044 China School of Materials Science and Engineering Tsinghua University Beijing100084 China National Engineering Research Center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China Center for Electron Microscopy State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou310014 China

Structural and compositional inhomogeneity is common in zeolites and considerably affects their properties. Conventional transmission electron microscopy (TEM) cannot provide sufficient information on local structures in zeolites due to the thickness-limited lateral resolution, lack of depth resolution, and electron dose-constrained focusing. We demonstrate that a multislice ptychography method based on four-dimensional scanning TEM (4D-STEM) data can overcome these limitations. The 4D-STEM ptychography image obtained from a ~40-nm thick MFI zeolite exhibits an ultrahigh lateral resolution of ~0.85 Å, enabling the unambiguous identification of individual framework oxygen (O) atoms and the precise determination of the orientations of adsorbed molecules. Furthermore, a depth resolution of ~6.6 nm is achieved, allowing the three-dimensional probing of O vacancies and phase boundaries in zeolites. The results of the 4D-STEM ptychography provide an unprecedented complete understanding of the intergrowth of MFI and MEL zeolites in three dimensions. The 4D-STEM ptychography can be generally applied to various zeolites and other materials with similar electron beam sensitivity. © 2022, CC BY.

关键词： Zeolites

Simultaneously Catalyze 1,3-Dioxolane Polymerization and Construct a Hybrid Protection Layer on Lithium Anode by Inf3 Catalyst

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SSRN 2023年

作者： Yang, Xueting Xu, Jie Ye, Dezhan Jiang, Xiancai Chen, Yazhou Ye, Xianke State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Materials Science and Engineering Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Chemical Engineering Fuzhou University Fuzhou350108 China Hubei Kediya Technology Company Yunlong Avenue Zengdu District Hubei Suizhou441300 China

The uncontrollable growth of lithium dendrites and low columbic efficiency in liquid electrolytes seriously impede the development of high-performance lithium-metal batteries. The emerging approach of in-situ polymerization of solid polymer electrolytes (SPEs) based on 1,3-dioxolane (DOL) provides a new method of solving the high interfacial impedance and unstable long cycling performance of Lithium metal battery. Until now, the role of Lewis acid catalysts on the DOL polymerization has only been limited as the catalyst, nevertheless their alloying ability with Li metal has been ignored, which is important to the formation of artificial SEI as additives. Here, InF3 catalyst was adopted to simultaneously initiate the polymerization of DOL and construct a LiF/LixIn based composite SEI layer through its reaction with Li metal. Electrochemical measurement results show that its oxidation potential is up to 4.5V and the Li+ transference number is 0.39. Compared with SnF2 catalyst and commercial electrolyte, PDOL with InF3 catalyst show lower interfacial resistances, much uniform lithium deposition and higher Li plating/striping efficiencies. After 500 cycles at 0.5C, the assembled Li/LiFePO4 solid battery delivers a 118mAh/g and 75% capacity retention, with high average Coulombic efficiency of 99.9%. This innovative and facile strategy of dual functional InF3 on the in-situ polymerization of DOL and SEI formation provides new ideas for design solid polymer electrolytes. © 2023, The Authors. All rights reserved.

关键词： Catalysts

Target density effects on charge tansfer of laser-accelerated carbon ions in dense plasma

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arXiv

arXiv 2022年

作者： Ren, Jieru Ma, Bubo Liu, Lirong Wei, Wenqing Chen, Benzheng Zhang, Shizheng Xu, Hao Hu, Zhongmin Li, Fangfang Wang, Xing Yin, Shuai Feng, Jianhua Zhou, Xianming Gao, Yifang Li, Yuan Shi, Xiaohua Li, Jianxing Ren, Xueguang Xu, Zhongfeng Deng, Zhigang Qi, Wei Wang, Shaoyi Fan, Quanping Cui, Bo Wang, Weiwu Yuan, Zongqiang Teng, Jian Wu, Yuchi Cao, Zhurong Zhao, Zongqing Gu, Yuqiu Cao, Leifeng Zhu, Shaoping Cheng, Rui Lei, Yu Wang, Zhao Zhou, Zexian Xiao, Guoqing Zhao, Hongwei Hoffmann, Dieter H.H. Zhou, Weimin Zhao, Yongtao MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Science Xi'an Jiaotong University Xi'An710049 China Science and Technology on Plasma Physics Laboratory Laser Fusion Research Center China Academy of Engineering Physics Mianyang621900 China Advanced Materials Testing Technology Research Center Shenzhen University of Technology Shenzhen518118 China Institute of Applied Physics and Computational Mathematics Beijing100094 China Graduate School China Academy of Engineering Physics Beijing100088 China Institute of Modern Physics Chinese Academy of Sciences Lanzhou710049 China

We report on charge state measurements of laser-accelerated carbon ions in the energy range of several MeV penetrating a dense partially ionized plasma. The plasma was generated by irradiation of a foam target with laser-induced hohlraum radiation in the soft X-ray regime. We used the tri-cellulose acetate (C9H16O8) foam of 2 mg/cm−3 density, and 1-mm interaction length as target material. This kind of plasma is advantageous for high-precision measurements, due to good uniformity and long lifetime compared to the ion pulse length and the interaction duration. The plasma parameters were diagnosed to be Te=17 eV and ne=4 × 1020 cm−3. The average charge states passing through the plasma were observed to be higher than those predicted by the commonly-used semiempirical formula. Through solving the rate equations, we attribute the enhancement to the target density effects which will increase the ionization rates on one hand and reduce the electron capture rates on the other hand. In previsous measurement with partially ionized plasma from gas discharge and z-pinch to laser direct irradiation, no target density effects were ever demonstrated. For the first time, we were able to experimentally prove that target density effects start to play a significant role in plasma near the critical density of Nd-Glass laser radiation. The finding is important for heavy ion beam driven high energy density physics and fast ignitions. © 2022, CC BY-NC-ND.

关键词： Irradiation