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Fabrication and Catalytic Properties of Films Based on Metal Ion-ligand Interaction between K2PdCl4 and 3-Amino-3-(4-pyridinyl)-propionitrile

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Chinese Journal of Structural Chemistry 2020年第3期39卷 526-534,379页

作者： CHEN Yan-ning LI Jing-Jun YANG Wei-Guang GAO Shui-Ying College of Chemistry Fuzhou UniversityFuzhou 350002China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

This work presents a highly active and reusable heterogeneous film catalytic assembly for hydrogenation reduction of aromatic nitro compounds. The multilayer structures of PEI-(K2PdCl4-P1)n-film(PEI = polyethylenmine, P1 = 3-amino-3-(4-pyridinyl)-propionitrile) bound to quartz slides were fabricated by layer-by-layer(LbL) self-assembly method. Various characterization techniques including X-ray photoelectron spectroscopy(XPS), inductively coupled plasma OES spectrometer(ICP), UV-vis spectroscopy and atomic force microscopy(AFM) were employed to reveal the growth process of the resulting LbL multilayers in detail. Subsequent in situ reduction by H2 produced Pd nanoparticles embedded in such films were used as catalyst for the hydrogenation of nitroarenes. The catalytic performance test shows that the thin film catalyst can be applied to the hydrogenation reaction of various substituted nitroaromatics, and exhibits good catalytic activity and good catalyst stability. It is worth mentioning that our catalytic films can be easily removed from the reaction system in any time during the reaction, and the catalytic activity could be fully recovered when reused directly in another catalytic cycle for five times.

关键词： palladium hydrogenation nitroarenes layer-by-layer multilayer film

Synthesis and Detection of Pesticides of Luminescent Metal-organic Framework Based on Carboxyl-decorating Tetraphenylethylene

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Chinese Journal of Structural Chemistry 2020年第8期39卷 1496-1502,1360页

作者： WANG ning ZHOU Meng-Shu LI Ting FU Hong-Ru LI Fei-Fei College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454000China College of Chemistry and Chemical Engineering Luoyang Normal UniversityLuoyang 471934China

A water-stable porous anionic metal-organic framework(MOF),[(CH3)2NH2][In(TCPP)4/3]n·(2DMF)n(3H2O)n(1,TCPP=1,1,2,2-tetra(4-carboxylbiphenyl)ethylene),was ***,compound 1 showed extremely high sensitivity and selectivity to current general-purpose pesticide 2,6-dichloro-4-nitroaniline(DCN)in aqueous *** fluorescence intensity of compound 1 could be decreased as much as 80%by 6 mL DCN,and it was almost completely quenched only with 20 mL *** results indicate that compound 1 can act as a fluorescent probe for DCN.

关键词： metal-organic framework tetraphenylethylene DCN detection

Advances in narrow linewidth diode lasers

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Science China(Information Sciences) 2019年第6期62卷 21-33页

作者： Xingkai LANG Peng JIA Yongyi CHEN Li QIN Lei LIANG Chao CHEN Yubing WANG Xiaonan SHAN Yongqiang ning Lijun WANG State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and Physics Chinese Academy of Sciences Daheng College University of Chinese Academy of Sciences

The smart travel era has come and requirement for high precision lidar detection technology is higher and higher. The new solid-state lidars can meet the requirements of intelligent cars in the future, with the advantages of high resolution, strong anti-active jamming ability, small volume, light weight, low cost and so on. The narrow linewidth diode laser is the perfect light source of solid-state lidars. The progress and development of narrow linewidth diode laser technique can greatly improve the application of solidstate lidar. The technology and development status of narrow linewidth diode lasers has been described detailly in the paper. And the design ideas, key fabrication technologies and optical characteristics of various narrow linewidth diode lasers have been analyzed and discussed as well. Finally, the developments of narrow linewidth diode lasers are prospected.

关键词： diode lasers narrow linewidth internal cavity optical feedback technology external cavity optical feedback technology solid-state lidar

Bone marrow-derived mesenchymal stem cells modulate autophagy in RAW264.7 macrophages via the phosphoinositide 3-kinase/protein kinase B/heme oxygenase-1 signaling pathway under oxygen-glucose deprivation/restoration conditions

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Chinese Medical Journal 2021年第6期134卷 699-707页

作者： ning-Fang Wang Chun-Xue Bai Department of Pulmonary Medicine Zhongshan HospitalFudan UniversityShanghai 200032China

Background: Autophagy of alveolar macrophages is a crucial process in ischemia/reperfusion injury-induced acute lung injury (ALI). Bone marrow-derived mesenchymal stem cells (BM-MSCs) are multipotent cells with the potential for repairing injured sites and regulating autophagy. This study was to investigate the influence of BM-MSCs on autophagy of macrophages in the oxygen-glucose deprivation/restoration (OGD/R) microenvironment and to explore the potential ***: We established a co-culture system of macrophages (RAW264.7) with BM-MSCs under OGD/R conditionsin vitro. RAW264.7 cells were transfected with recombinant adenovirus (Ad-mCherry-GFP-LC3B) and autophagic status of RAW264.7 cells was observed under a fluorescence microscope. Autophagy-related proteins light chain 3 (LC3)-I, LC3-II, and p62 in RAW264.7 cells were detected by Western blotting. We used microarray expression analysis to identify the differently expressed genes between OGD/R treated macrophages and macrophages co-culture with BM-MSCs. We investigated the gene heme oxygenase-1 (HO-1), which is downstream of the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt) signaling ***: The ratio of LC3-II/LC3-I of OGD/R treated RAW264.7 cells was increased (1.27 ± 0.20vs. 0.44 ± 0.08,t = 6.67,P < 0.05), while the expression of p62 was decreased (0.77 ± 0.04vs. 0.95 ± 0.10,t = 2.90,P < 0.05), and PI3K (0.40 ± 0.06vs. 0.63 ± 0.10,t = 3.42,P < 0.05) and p-Akt/Akt ratio was also decreased (0.39 ± 0.02vs. 0.58 ± 0.03,t = 9.13,P < 0.05). BM-MSCs reduced the LC3-II/LC3-I ratio of OGD/R treated RAW264.7 cells (0.68 ± 0.14vs. 1.27 ± 0.20,t = 4.12,P < 0.05), up-regulated p62 expression (1.10 ± 0.20vs. 0.77 ± 0.04,t = 2.80,P < 0.05), and up-regulated PI3K (0.54 ± 0.05vs. 0.40 ± 0.06,t = 3.11,P < 0.05) and p-Akt/Akt ratios (0.52 ± 0.05vs. 0.39 ± 0.02,t = 9.13,P < 0.05). A whole-genome microarray assay screened the differentially expressed geneHO-1, which is downstream of the PI3K/Akt signalin

关键词： Bone marrow mesenchymal stem cells Oxygen-glucose deprivation/restoration Phosphoinositide 3-kinase/protein kinase B signaling pathway Macrophages Autophagy Whole-genome microarray assay

Abundance of total bacteria, ATP and manganese-oxidating bacteria in the sediments and manganese nodules of the Northwestern Pacific Ocean

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Acta Oceanologica Sinica 1991年第1期10卷 141-147页

作者： Shi Junxian, Chen Zhongyuan and ning XiurenSecond Institute of Oceanography, State Oceanic Administration, Hangzhouy,China

In the seawater and sediments of the ocean, there exist huge quantities of bacteria whose living activities cause various chemical reaction processes. It is demonstrated that microorganisms play a fundamental role on chemical changes of the sediments and diageneses. Over the last twenty years, great interest has been increased about the role of deep-sea bacteria in the ferromanganese sedimentary process. Much work has been done on this aspect in the Atlantic Ocean, the Baltic Sea and the Pacific O-

关键词： ATP and manganese-oxidating bacteria in the sediments and manganese nodules of the Northwestern Pacific Ocean Abundance of total bacteria

User Association and Wireless Backhaul Bandwidth Allocation for 5G Heterogeneous Networks in the Millimeter-Wave Band

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China Communications 2018年第4期15卷 1-13页

作者： Zhenxiang Su Bo Ai Yichuan Lin Danping He Ke Guan ning Wang Guoyu Ma Li Niu State Key Lab of Rail Traffic Control and Safety Beijing Jiaotong University Beijing 100044 China Beij ing Engineering Research Center of High-speed Railway Broadband Mobile Communications School of Information Engineering Zhengzhou University Zhengzhou 450001 China National Mobile Communications Research Laboratory Southeast University Nanjing 210096 China ZTE Corporation Beijing China

The user association and wireless backhaul bandwidth allocation for a two-tier heterogeneous network （HetNet） in the mil- limeter wave （mmWave） band is proposed in this article. The two-tier HetNet is built up with a macro base station （MBS） and several small cell SBSs, where the MBS is assumed to be equipped with large-scale antenna arrays but the SBSs only have single-antenna capa- bility and they rely on the wireless link to the MBS for backhaul. The sum of logarithmic user rate, which is established according to the result of multi-user Multiple Input Mul- tiple Output （MIMO） downlink employing Zero-Force Beamforming （ZFBF）, is chosen as the network utility for the objective func- tion. And a distributed optimization algorithm based on primal and dual decomposition is used to jointly optimize the user association variable xj,z and the wireless backhaul band- width factor α. Simulation results reveal that the distributed optimization algorithm jointly optimizing two variables outperforms the con- ventional SINR-based user association strate- gies.

关键词： millimeter wave massive MIMO ZFBF user association bandwidth allocation

A multifunctional nanoparticle system combines sonodynamic therapy and chemotherapy to treat hepatocellular carcinoma

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Nano Research 2017年第3期10卷 834-855页

作者： Yang Liu Guoyun Wan Hua Guo Yuanyuan Liu Ping Zhou Hemei wang Dan Wang Sipei Zhang Yinsong Wang ning Zhang Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin Medical University Tianjin 300060 China Research Center of Basic Medical Science & School of Pharmacy Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics) Tianjin Medical University Tianjin 300070 China

Hepatocellular carcinoma （HCC） is one of the most common and deadly malignancies worldwide. To date, the survival of patients with HCC has not improved because of the insensitivity of HCC to conventional treatments. Sonodynamic therapy （SDT） is a promising new approach that shows remarkable potential in the treatment of HCC. Here, we designed a simple, biocompatible, and multifunctional nanosystem that combines SDT and chemotherapy to treat HCC. This nanosystem, called HPDF nanoparticles, had a core-shell structure in which hematoporphyrin （HP） was complexed with doxorubicin （DOX） to form the hydrophobic core and the surface was coated with Pluronic F68 to form the hydrophilic shell. In HCC cells, HPDF nanoparticles in combination with ultrasonic irradiation （1.0 MHz, 1.5 W/cm2, 30 s） exhibited potent cytotoxicity, resulting from the synergistic effects of a large amount of reactive oxygen species generated from HP and DOX-induced DNA damage. Notabl~ HPDF nanoparticles in combination with ultrasonic irradiation significantly reversed drug resistance in Nanog-positive cancer stem cells （CSCs） in HCC. In nude mice bearing HCC tumors, HPDF nanoparticles efficiently accumulated in the tumors and reached the maximum levels within 6-8 h, post intravenous injection. HPDF nanoparticles, in combination with ultrasonic irradiation （1.0 MHz, 3 W/cm2, 5 min）, suppressed tumor growth, angiogenesis, and collagen deposition, considerably. In summary, our results show that HPDF nanoparticles can effectively combine SDT and chemotherapy to inhibit HCC growth and progression through multiple mechanisms in both cellular and animal models.

关键词： nanoparticle sonodynamic therapy chemotherapy combination treatment hepatocellular carcinoma

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

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Materials Futures

Materials Futures 2024年第2期3卷 131-140页

作者： Chuan ning Shengxin Xiang Xiupeng Sun Xinya Zhao Chuanhui Wei Lele Li Guoqiang Zheng Kai Dong College of Materials Science and Engineering Key Laboratory of Material Processing and Mold(Ministry of Education)Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Materials Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001People’s Republic of China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China

Wearable electronics are advancing towards miniaturization and ***,traditional energy supply methods have largely hindered their *** effective solution to this problem is to convert human mechanical energy into electricity to power wearable electronic ***,it is greatly attractive to design flexible,foldable and even stretchable energy harvesting ***,we use the electrospinning and kirigami approach to develop a type of highly stretchable kirigami-patterned nanofiber-based triboelectric nanogenerator(K-TENG).Due to its innovative structural design,the K-TENG can achieve a tensile strain of 220%,independent of the tensile properties of the material *** a person swings their arms,the K-TENG fixed to the clothing can convert mechanical energy from human movement into electrical *** produced electricity can directly drive 50 LED lights and a digital watch,or be stored in a lithium battery to charge the smartwatch and smartphone,*** study employs a new method to fabricate a stretchable triboelectric nanogenerator and demonstrates its promising applications in wearable power technology.

关键词： stretchable triboelectric nanogenerators kirigami energy harvesting

Weak-focused acoustic vortex generated by a focused ring array of planar transducers and its application in large-scale rotational object manipulation

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Chinese Physics B 2021年第4期30卷 319-327页

作者： Yuzhi Li Peixia Li ning Ding Gepu Guo Qingyu Ma Juan Tu Dong Zhang School of Computer and Electronic Information/School of Artificial Intelligence Nanjing Normal UniversityNanjing 210023China Institute of Acoustics Nanjing UniversityNanjing 210093China

Contactless manipulation of multi-scale objects using the acoustic vortex(AV) tweezers offers tremendous perspectives in biomedical ***,it is still hindered by the weak acoustic radiation force(ARF) and torque(ART)around the vortex *** introducing the elevation angle to the planar transducers of an N-element ring array,the weakfocused acoustic vortex(WFAV) composed of a main-AV and N paraxial-AVs is constructed to conduct a large-scale object *** from the traditional focused AV(FAV) generated by a ring array of concave spherical transducers,a much larger focal region of the WFAV is generated by the main lobes of the planar transducers with the size inversely associated with the elevation *** the pressure simulation of the acoustic field,the capability of the rotational object driving in the focal plane for the WFAV is analyzed using the ARF and the ART exerted on an elastic ball based on acoustic *** the experimental system built in water,the generation of the WFAV is verified by the scanning measurements of the acoustic field and the capability of object manipulation is also analyzed by the rotational trapping of floating particles in the focal *** favorable results demonstrate the feasibility of large-scale rotational manipulation of objects with a strengthened ART and a reduced acousto-thermal damage to biological tissues,showing a promising prospect for potential applications in clinical practice.

关键词： acoustic vortex weak-focused large-scale object manipulation acoustic scatter acoustic radiation force