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DNA Cleavage by Copper (Ⅱ) Complexes Without added Coreactants

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Chinese Chemical Letters 1999年第5期10卷 383-386页

作者： rui ren pin yang Gao Yi HAN(institute of coordination chemistry. state key laboratory of coordination chemistry.nanjing university. nanjing 210093institute of molecular science. shanxi university. taiyuan 030006) institute of coordination chemistry State Key Lab. of Coord. Chemistry Nanjing University Nanjing 210093 China institute of molecular science Shanxi University Taiyuan 030006 China

The cleavage activity of complexes between copper (Ⅱ) and four different amino acidor amino acid methyl ester on DNA was tested at physioloical pH and temperature., It was found that Cu (Ⅱ)-L-His and Cu (Ⅱ)-L-His methyl ester complexes could cleane DNA. The extent ofDNA cleavage is largely dependent on the metal ion-to-ligand ratio. The cleavage of doublestranded DNA mediated by Cu (Ⅱ)-L-His complexes occurs via a hydrolytie mechanism.

关键词： Copper (Ⅱ) complexes DNA hydrolytic cleavage

Studies　on　the　Binding　of　Tris(1,10-phenanthroline)　Nickel(Ⅱ)　to　Calf　Thymus　DNA

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Chemical Research in Chinese Universities 1997年第3期13卷 201-206页

作者： JIN Lan , yang pin . . and LI Qing-shan (state key laboratory of coordination chemistry, nanjing university , Nnjing 21 0093 ) yang Bin-sheng (institute of molecular science , shanxi university , taiyuan , 030006 )

Absorbance and fluorescence methods were used to study the interaction of - and A-tris (phenanthroline) nickel ( Ⅱ) complex with calf thymus DNA. It was con- cluded that -Ni(phen). preferentially bound to DNA. Especially the fluorescence Scatchard plots were discussed for the binding of EthBr to calf thymus DNA in the presence of varying concentrations of the metal complex. Theses studies indicated that both the isomers bound to DNA by two acting types , namely , intercalative and electrostatic bound modes.

关键词： Chiral metal complexe DNA . Binding mode

Crystal and molecular Structure of Copper（Ⅰ） Complex 〔Cu（PPh3）2（NO3）〕

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Chinese Journal of Structural chemistry 2000年第2期19卷 126-130页

作者： yang rui Na * LI Tian Xian SUN Yu An 1 HU Xiao Yuan JIN Dou Man LUO Bao Sheng 2 (Henan institute of chemistry, Zhengzhou 450003) (state key laboratory of coordination chemistry, nanjing university 210093) 1(Zhengzhou institute of 河南省化工所河南郑州 450 0 0 3 郑州轻工业学院河南郑州 450 0 0 1 南京大学配位化学国家重点实验室江苏南京 2 1 0 0 93 武汉大学湖北武汉 470 0 53

Mononuclear copper(Ⅰ) complex 〔Cu(PPh 3) 2(NO 3)〕 has been synthesized by ligand reduction of cupric nitrate with PPh 3 in methanol and characterized by elemental analyses, molecular weight determination, IR spectra and X ray single crystal analysis; its molar conductivity has also been measured. The crystal is monoclinic, space group C2/c, a=24.52(5), b=9.187(2), c=15.489(3) ; β=116.69(3)°, V=3118.7(11) 3, Z=4, F(000) =1520, D c =1.584 g/cm 3, R=0.0276, R w =0.0321. The results show that PPh 3 coordinates as a monodentate ligand to the Cu(Ⅰ) atoms, and (NO 3) behaves as a bidentate ligand in the prepared complex.

关键词： reduction copper crystal structure

Efficient DNA Cleavage by Copper(Ⅱ) Complex Derived from 1, 1′-Dimethyl-2, 2′-biimidazole Ligand

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Chinese Chemical Letters 2005年第10期16卷 1397-1400页

作者： rui Li SANG pin yang institute of molecular science Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education Shanxi University Taiyuan 030006

The cleavage of DNA （pBR322） by [Cu（Dime-biim）2（H2O）]（ClO4）2 （Dime-biim=1, 1＇- dimethyl-2, 2＇-biimidazole） was investigated. The results showed that the complex could cleave DNA efficiently at pH=8.0 and 3... 详细信息

关键词： Copper(Ⅱ) complex DNA efficient cleavage biimidazol derivative.

Rapid, Catalytic Hydrolysis of DNA by Copper(Ⅱ) Complexes

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Chemical Research in Chinese Universities 1999年第2期15卷 104-107页

作者： ren rui yang pin GAO Dong institute of coordination chemistry State Key Laboratory of Coordination ChemistryNanjing UniversityNanjing210093 institute of molecular science Shanxi UniversityTaiyuan030006

ＩｎｔｒｏｄｕｃｔｉｏｎＮｕｃｌｅａｓｅｓｗｈｉｃｈｃａｔａｌｙｚｅｔｈｅｈｙｄｒｏｌｙｔｉｃｃｌｅａｖａｇｅｏｆｔｈｅｐｈｏｓｐｈｏｄｉｅｓｔｅｒｂａｃｋｂｏｎｅｏｆＤＮＡａｎｄＲＮＡｐｌａｙａｎｉｍｐｏｒｔａｎｔ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＮｕｃｌｅａｓｅｓｗｈｉｃｈｃａｔａｌｙｚｅｔｈｅｈｙｄｒｏｌｙｔｉｃｃｌｅａｖａｇｅｏｆｔｈｅｐｈｏｓｐｈｏｄｉｅｓｔｅｒｂａｃｋｂｏｎｅｏｆＤＮＡａｎｄＲＮＡｐｌａｙａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｔｈｅｍｏｌｅｃｕｌａ...

关键词： Copper complex DNA Cleavage efficiency

Intensifying uneven charge distribution via geometric distortion engineering in atomically dispersed M-N_(x)/S sites for efficient oxygen electroreduction

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Nano Research 2022年第10期15卷 8928-8935页

作者： Zhuting Zhang Simin yang rui Jiang Tian Sheng Chunfeng Shi Yueguang Chen Leyu Wang state key laboratory of Chemical Resource Engineering College of ChemistryBeijing University of Chemical TechnologyBeijing 100029China College of chemistry and Materials science Anhui Normal UniversityWuhu 214000China Research institute of Petroleum Processing SINOPECBeijing 100083China

Fine regulation of geometric structures has great promise to acquire specific electronic structures and improve the catalytic performance of single-atom catalysts,yet it remains a ***,a novel seed encapsulation–decomposition strategy is proposed for the geometric distortion engineering and thermal atomization of a series of Cu-N_(x)/S moieties anchored on carbon *** pyrolysis,seeds(Cu^(2+),CuO,or Cu_(7)S_(4) nanoparticles)confined in metal organic framework can accommodate single Cu atoms with Cu–N or Cu–S coordination bonds and simultaneously induce C–S or C–N bond cleavage in the second coordination shell of Cu centers,which are identified to manipulate the distortion degree of Cu-N_(x)/S *** severely distorted Cu-N3S molecular structure endows the resultant catalyst with excellent oxygen reduction reaction activity(E_(1/2)=0.885 V)and zinc-air battery performance(peak power density of 210 mW·cm^(−2)),outperforming the asymmetrical and symmetrical Cu-N4 structures.A combined experimental and theoretical study reveals that the geometric distortion of Cu-N_(x)/S moieties creates uneven charge distribution by a unique topological correlation effect,which increases the metal charge and shifts the d-band center toward the Fermi level,thereby optimizing the inter-mediate adsorption energy.

关键词： single-atomic sites geometric distortion engineering seed encapsulation-decomposition strategy charge distribution oxygen reduction reaction

Ultrasmall coordination Polymers for Alleviating ROS-Mediated Inflammatory and Realizing Neuroprotection against Parkinson's Disease

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Research 2022年第4期2022卷 531-546页

作者： Guowang Cheng Xueliang Liu Yujing Liu Yao Liu rui Ma Jingshan Luo Xinyi Zhou Zhenfeng Wu Zhuang Liu Tongkai Chen Yu yang key laboratory of Modern Preparation of Traditional Chinese Medicine Ministry of EducationJiangxi University of Chinese MedicineNanchang 330004China institute of molecular Medicine(IMM) Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200240China science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhou 510405China School of Cellular and molecular Medicine University of BristolBristol BS81THUK institute of Functional Nano e Soft Materials laboratory(FUNSOM) Soochow UniversitySuzhouJiangsu 215123China

Parkinson's disease(PD)is the second most common neurodegenerative disease globally,and there is currently no effective treatment for this *** accumulation of reactive oxygen species(ROs)and neuroinflammation are major contributors to PD ***,ultrasmall nanoscale coordination polymers(NCPs)coordinated by ferric ions and natural product curcumin(Cur)were exploited,showing efficient neuroprotection by scavenging excessive radicals and suppressing *** a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced mouse PD model,such ultrasmall Fe-Cur NCPs with prolonged blood circulation and BBB traversing capability could effectively alleviate oxidative stress,mitochondrial dysfunction,and inflammatory condition in the midbrain and striatum to reduce PD ***,this study puts forth a unique type of therapeutics-based NCPs that could be used for safe and efficient treatment of PD with potential in clinical translation.

关键词： inflammation pathogenesis clinical

Comparing electrocatalytic hydrogen and oxygen evolution activities of first-row transition metal complexes with similar coordination environments

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Journal of Energy chemistry 2021年第12期30卷 659-666,I0016页

作者： Xiaotong Jin Xialiang Li Haitao Lei Kai Guo Bin Lv Hongbo Guo Dandan Chen Wei Zhang rui Cao key laboratory of Applied Surface and Colloid chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina

Developing cheap and efficient electrocatalysts for water splitting is required for energy conversion *** first-row transition metal complexes have been shown to be active for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Metal ions play crucial roles in these catalytic processes,but the activity dependence on the nature of metal ions has been rarely studied due to the difficulty to compare metal complexes with different coordination *** herein reported the synthesis of a series of metal complexes of azido-substituted porphyrin(1),in which metal ions have very similar coordination *** grafting 1-M(M=Mn,Fe,Co,Ni,and Cu)onto alkynefunctionalized carbon nanotubes(CNTs)through the same covalent connection,the resulted hybrids 1-M@CNT were all active and robust for both electrocatalytic HER and OER in alkaline aqueous *** these hybrids,1-Fe@CNT displayed the highest electrocatalytic activity for HER,while 1-Co@CNT was the most active one for ***,a two-electrode water electrolysis cell assembled with 1-Fe@CNT as the cathode and 1-Co@CNT as the anode required smaller applied bias potential by210 mV to get 10 mA/cm^(2)current density as compared to that assembled with Pt/C and Ir/C with the same amount of metal *** work is significant to correlate HER and OER activity with the nature of first-row transition metal ions and to highlight promising potential applications of molecular electrocatalysis in water splitting.

关键词： Metal porphyrins molecular electrocatalysis Hydrogen evolution Oxygen evolution Water splitting

Cobalt porphyrins supported on carbon nanotubes as model catalysts of metal-N_(4)/C sites for oxygen electrocatalysis

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Journal of Energy chemistry 2021年第2期30卷 77-81,I0003页

作者： Haonan Qin Yanzhi Wang Bin Wang Xiaoguang Duan Haitao Lei Xuepeng Zhang Haoquan Zheng Wei Zhang rui Cao key laboratory of Applied Surface and Colloid chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an 710119.ShaanxiChina School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide 5005SAAustralid

Transition-metal based M-N_4/C catalysts are appealing for electrocatalytic oxygen reduction reaction(ORR) and oxygen evolution reaction(OER). Employing model catalysts, which have well-defined molecular structures and coordination environments, to investigate electrocatalytic performance of M-N_4/C sites for ORR and OER is of fundamental significance. Herein, we reported the use of Co tetra(phenyl)porphyrin 1 and Co tetra(pentafluorophenyl)porphyrin 2 as models to probe the role of Co-N_4/C sites for oxygen electrocatalysis. We showed that Co porphyrin 1 is more efficient than its structural analogue 2 for oxygen electrocatalysis in alkaline aqueous solutions, indicating that the electronrich Co-N_4/C site is more favored when noncovalently adsorbed on carbon supports. This work inspires rational design of reaction-oriented catalysts for sustainable energy storage and conversion technologies.

关键词： molecular electrocatalysis Model catalyst Oxygen evolution reaction Oxygen reduction reaction Porphyrin