曾明华
抑菌金属配合物的分子设计与生物活性筛选; 功能金属配合物和聚合金属配合物超分子体系的分子设计、合成和结构与性能研究,重点在微孔和磁性金属配(聚)合物的分子定向构筑、结构转换及其物化性能效应关系研究。
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- 姓名:曾明华
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
勘查地质学
- 研究兴趣:抑菌金属配合物的分子设计与生物活性筛选; 功能金属配合物和聚合金属配合物超分子体系的分子设计、合成和结构与性能研究,重点在微孔和磁性金属配(聚)合物的分子定向构筑、结构转换及其物化性能效应关系研究。
曾明华博士,2001年7月到广西师范大学化学化工学院工作。2004年获中山大学博士学位。2004年12月晋升副教授。2004年12月被遴选为无机化学和应用化学的硕士生导师。2006年12月破格晋升教授,2008年起任西北大学兼职教授。第九届广西青年科技奖获得者,广西高等学校优秀人才资助计划人选,2007年广西“新世纪十百千人才工程”第二层次人选;2007年霍英东教育基金会第十一届青年教师基金获得者和2007年教育部 “新世纪优秀人才支持计划”入选者。
在包括,德国《Angew. Chem. Int. Ed..》、美国《Inorg. Chem..》、《Crystal Growth & Design》,英国《Dalton Trans.》、《New J. Chem.》《J. Organomet. Chem.》,以及国内的《中国科学(B)辑》、《化学学报》等各级刊物已发表76篇论文,其中SCI收录论文72篇。申请发明专利4项,其中已获得两项授权(200520079730.1, 200520079729.9)。先后被J. Am. Chem. Soc. (世界两大顶尖化学刊物之一), Inorg. Chem. (世界两大顶尖无机化学刊物之一) 等国际知名学术刊物聘请担任审稿专家。
主要研究和感兴趣的领域:抑菌金属配合物的分子设计与生物活性筛选; 功能金属配合物和聚合金属配合物超分子体系的分子设计、合成和结构与性能研究,重点在微孔和磁性金属配(聚)合物的分子定向构筑、结构转换及其物化性能效应关系研究。
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【期刊论文】A Single-Molecule-Magnetic, Cubane-Based, Triangular Co12 Supercluster**
曾明华, Ming-Hua Zeng, * Min-Xia Yao, Hong Liang, * Wei-Xiong Zhang, and Xiao-Ming Chen
Angew. Chem. Int. Ed. 2007, 46, 1832-1835,-0001,():
-1年11月30日
cluster compounds·cobalt·magnetic properties·N,, O ligands
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曾明华, Ming-Hua Zeng, *, † Sheng Hu, ‡ Qing Chen, † Gang Xie, § Qi Shuai, § Sheng-Li Gao, § and Li-Yuan Tang)
Inorg. Chem. 2009, 48, 7070-7079,-0001,():
-1年11月30日
A 2D pillared bilayer coordination polymer, [Co(5-NH2-bdc)(bpy)0.5(H2O)] 3 2H2O (1; 5-NH2-bdc=5-aminoisophthalate; bpy=4,40-bipyridine) has been hydrothermally synthesized and shows a novel microporous host framework with 1D channels and high thermal stability (~400℃). The framework of 1 exhibits reversible single-crystal-to-singlecrystal transformations upon removing and rebinding the coordinated waters as well as replacing them with MeOH and EtOH from the solvent. X-ray crystallography reveals that the coordination geometry of Co(II) changes from octahedron to square pyramid, as well as the shrinkage/expansion of pore deformation in respect to the subsequent shear motion of bpy pillars and vice versa. The dehydrated form 2 exhibits a shape recognition ability, which can accommodate linear molecules, such as MeCN and 2-propynyl alcohol, and interesting storage capabilities for oversized MeOH, EtOH, and benzene molecules, concomitant with spongelike dynamic transformation. The microcalorimetric study indicates that the crystalline state-liquid guest exchange and guest inclusion processes (1 ⊃ MeOH or EtOH, 2 ⊃ MeOH, EtOH or MeCN) are feasibly endothermic reactions with the values of molar enthalpy, ΔHθ m, of +21.38(96), +12.68(85), +25.92(86), +17.03(57), and +14.93(75) kJ mol-1, respectively.
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曾明华, Yan-Ling Zhou, †, ‡ Mei-Chun Wu, † Ming-Hua Zeng, *, † and Hong Liang*, ‡
Inorg. Chem. 2009, 48, 10146-10150,-0001,():
-1年11月30日
The first structurally authenticated example of coordinated polymer featuring homometallic pillared-trilayer structure, [Co3(ina)2(pico)2(H2O)2]n (1), was built from mixed pyridyl-type monocarboxylates, isonicotinate (ina) and 3-hydroxypicolinate (pico), containing Kagom e-type [Co3(pico)2(H2O)2]n 2nþ trilayers. The magnetic phase diagram of 1 shows a metamagnetic transition below 3.2 K, arising from the competing interactions between the antiferromagnetic intralayer couplings in different amplitudes with obviously noncompensated moments versus weak AF interlayer coupling.
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曾明华, Sheng Hu, Kun-Huan He, Ming-Hua Zeng, * Hua-Hong Zou, and Yi-Min Jiang*
Inorganic Chemistry, Vol. 47, No.12, 2008,-0001,():
-1年11月30日
A 1D rigid, linear coordination polymer, (4,4'-bipyridine)(2-pyridylsulfonate)copper, has been applied for the controlledassembly of a new porous host that generates 1D channels by an interdigitated packing through the recognition of hydrogen bonding and π-π stacking interactions. The porous structure is architecturally robust when it reversibly uptakes water molecules and exchanges guest small molecules (MeOH, i-PrOH) from solution as determined by single-crystal-to-single-crystal transformation studies. Moreover, the open-channel solid displays irreversible benzene and toluene vapor sorption behaviors attributed to a widening of the channel cross-section that fetters the larger guest molecules, resulting from the dynamic, "soft" supramolecular framework.
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曾明华, Ming-Hua Zeng, *, † Hua-Hong Zou, † Sheng Hu, † Yan-Ling Zhou, † Miao Du, ‡ and Hao-Ling Sun§
Crystal Growth & Design, Vol. 9, No.10, 2009,-0001,():
-1年11月30日
Two related CoII 5-aminoisophthalate coordination frameworks [Co5(μ3-OH)2(5-NH2-bdc)4(H2O)2] 3 7.5H2O (1, 5-NH2-bdc=5-aminoisophthalate) and [Co5(μ3-OH)2(5-NH2-bdc)4(bpy)0.5(H2O)] 3 3H2O (2, bpy=4,40-bipyridine) based on [Co5-(μ3-OH)2] clusters have been synthesized by hydrothermal reaction, structurally described, as well as properties characterized, that have unusual 3D networks with high connectivity (3,12) and (3,13)-connected, respectively. Notably, the unique (3,13)-connected framework is constructed from the (3,12)-connected network analogue and 4,40-bipyridyl spacer. Magnetic studies show that a dominant antiferromagnetic coupling between Co(II) ions, and the generation of relatively effective noncompensated moments at very low temperature, mainly arises from the cooperative magnetic effect of the intercluster arrangement in the Td-SP-3Oh mixedgeometry-based pentamer.
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曾明华, Ming-Hua Zeng, a, b Xiao-Long Feng, a Wei-Xiong Zhanga and Xiao-Ming Chen*a
Dalton Trans., 2006, 5294-5303,-0001,():
-1年11月30日
A microporous 3D cobalt(II) coordination polymer featuring pillared layers [Co2(ma)(ina)]n•2nH2O (1•2H2O) (ma = malate, ina = isonicotinate) was generated by hydrothermal treatment with a void volume of 25.8%, in which the in-situ generated ma ligands connect the CoII ions into a 2D lattice with mixed and multiple exchange-bridges, affording a new geometrical topology different from the Kagome lattice and leading to spin frustration. The rigid ina-pillared metallic-layered structure could retain 3D structural ordering upon guest removal and exchange. By soaking guest-free host (1) inMeOH and methanamide (HCONH2) solutions, single crystals of dehydrated 1 were transformed into single crystals of 1•MeOH and 1•HCONH2, respectively, without apparent host-structural changes. 1 can also be rehydrated into 1•2H2O. The guest-inclusion crystals have been characterized by X-ray single-crystal diffraction at 293 K and 93 K, confirming the single-crystal-to-single-crystal transformations and providing detailed information of the guest molecules confined in the subnanospace and host-guest and/or guest–guest hydrogen-bonding interactions. The magnetic behaviours of this family of porous magnetic materials are complex due to the influences of multiple metal sites, intra- and inter-layer exchanges, spin–orbit coupling, as well as geometrical frustration, which show magnetic ordering at <2K, 3.5K, 3.5K, and 8K for 1, 1•MeOH, 1•HCONH2, and 1•2H2O, respectively, due to the different size of guest molecules along with the different host-guest interaction, which may slightly modify the path of magnetic exchange, decrease the intensity of the spin-frustration in the 2D lattice, and cooperatively enhance the magnetic ordering temperature.
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曾明华, Ming-Hua Zeng, a, b Xiao-Long Fenga and Xiao-Ming Chen*a
Dalton Trans., 2004, 2217-2223,-0001,():
-1年11月30日
Single crystals of a neutral, microporous, laminated metal-organic framework (MOF) [Fe(pydc)(4,4'-bipy)]•H2O (1•H2O) (H2pydc=2,5-dicarboxypyridine, 4,4'-bipy=4,4'-bipyridine) were generated by hydrothermal synthesis, and its crystal structure was determined. 1•H2O retains the framework robustness to ca. 370℃ and is insoluble in common organic solvents. By soaking in MeOH and EtOH solutions, 1•H2O was transformed directly from the parent single crystals into single crystals of 1•MeOH or 1•EtOH, respectively. Meanwhile, 1•H2O shrank to the guest-free framework 1h or 1v, respectively, under appropriate heating (up to 160℃ in N2) or vacuum treatment (10mmHg) at room temperature. Compared to that of 1•H2O, the unit-cell volume of 1•EtOH slightly increases by 2.9%, whereas those of 1h or 1v are reduced by 8.2 and 6.6%, respectively. The anhydrous 1v was found to be highly chemically reactive, taking up ethanol vapor to furnish the solvated crystal structure of an 'expanded' framework 1•EtOH. In a mixture of ethanol-DMF or ethanol-benzene, a selective exchange process was observed, with only ethanol molecules exchanged into the structure due to the limited free size of the channels in the framework of 1. All the transformed crystals have also been characterized by X-ray single-crystal diffraction to understand the crystal-to-crystal transformation, which have different free volumes (6.5-20.4%).
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曾明华, Ming-Hua Zeng, a Song Gao, b Xiao-Lan Yua and Xiao-Ming Chen*a
New J. Chem., 2003, 27, 1599-1602,-0001,():
-1年11月30日
A new metal-organic polymer [Fe(pydc)(H2O)] (1; H2pydc ¼ pyridine-2,5-dicarboxylic acid), has been hydrothermally synthesised and characterised by X-ray diffraction, showing that 1 is a three-dimensional framework featuring two-dimensional carboxylate-bridged layers based on canted dimeric iron(II) subunits. Magnetic measurements demonstrate that, although the carboxylate and pyridyl bridges are present in the layer, 1 exhibits only a weak antiferromagnetism.
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曾明华, Yang-Jian Hua, b, Hua Hong Zou a, Ming-Hua Zeng a, *, Ng Seik Wengc
Journal of Organometallic Chemistry 694(2009)366-372,-0001,():
-1年11月30日
Two bis-(1-arylliminomethylenyl-2-oxy-naphthalen) nickel complexes (aryl=2-methylphenyl, complex1; aryl=2,6-diisoproylphenyl, complex 2) were reacted with alkylaluminium in presence of equimolar PPh3 and tested as catalysts in methyl methacrylate (MMA) polymerization. The two nickel catalysts can initiate polymerization of MMA with good to high activity, the highest activity reaching 1.1×105g PMMA/(mol Ni•h) by less bulky complex 1 at 0.8mol/L of MMA, 400 of Al/Ni ratio and 0℃. In addition, the structures of nickel complexes and polymerization conditions, such as monomer concentration, polymerization temperature and Al/Ni molar ratio on catalytic activity of polymerization have great influences on catalytic activity and product properties.
Nickel complex MMA Alkylaluminium Polymerization Cocatalyst
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曾明华, Bing-Wen Li, Yan-Ling Zhou, Qing Chen, Ming-Hua Zeng *
Polyhedron 29(2010)148-153,-0001,():
-1年11月30日
A unique [Co13(mosao)8(Hmosao)6]μ(ClO4)4μ3DMFμMeOHμ3H2O (1, H2mosao=3-methoxysalicylaldoxime) supercluster has been synthesized by a method of solvothermal reaction. The [Co13(l2-O)8(l3-O)6(l2-O-N)2(l3-O-N)8]4+ core is highly conjugated butterfly-like disc, which can be considered as fourteen distorted defective cubes sharing the neighboring faces one another. The electrospray ionization mass spectrometry (ESI-MS) analysis of 1 strongly suggests that Co13 cluster also exists in solution and maintains a conformation similar to that in the crystal structure, indicating that the significant stability of 1 in solution. Magnetic measurements of 1 reveal antiferromagnetic behaviors resulting from the cooperative magnetic coupling through multiplicate monoatomic oxygen and -N-O- exchange bridges and the odd number of spins result in relatively effective noncompensated moments at very low temperature.
CoII cluster Tridecanuclear Schiff base ligands ESI-MS analysis Magnetic properties
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