白俊峰
纳米簇合物化学
个性化签名
- 姓名:白俊峰
- 目前身份:
- 担任导师情况:
- 学位:
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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
- 职称:-
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学科领域:
无机化学
- 研究兴趣:纳米簇合物化学
白俊峰,男,1969年11月出生。 2000年在南京大学获博士学位,师从我国著名化学家游效曾院士。2000年4月至2002年7月在德国Karlsruhe 大学无机化学研究所从事博士后研究。2003年11月破格聘为南京大学教授,2004年4月评为博士生导师。先后在国际自然科学著名期刊Science发表一篇,国际化学著名期刊 Angew. Chemie发表两篇和Chem. Eur. J发表一篇,专业期刊Inorg. Chem., J. Mater. Chem.等发表二十多篇论文。 在Manfred Scheer教授指导合作下设计合成了第一个纯无机类富勒烯分子,该成果发表在国际著名期刊Science上。著名无机化学家Achim Müller ( 2002年Wilkinson奖获得者)在Science发表评述文章《对称美》评价该工作为当今纳米簇合物化学的最新进展之一和所合成的分子为高对称美丽分子中的一员。并且我国著名化学家徐光宪对此工作也进行了评价和理论计算。Science 编者按该分子称为C60的表兄弟。美国Chem. & Eng. News(化学与工程新闻)、德国Nachrichten aus der Chemie(化学新闻)及我国科学时报等杂志均作了专门报道。和游效曾院士及新加坡国立大学Wei Ji教授一起发现并首次提出二硫烯镍配合物是一类新型分子光限幅材料。目前,主持国家自然科学基金项目1项和南京大学人才引进及学科建设基金。同时入选教育部新世纪优秀人才支持计划(2004).
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成果数
7
【期刊论文】Synthesis of Inorganic Fullerene-Like Molecules
白俊峰, Junfeng Bai, Alexander V. Virovets, Manfred Scheer*
,-0001,():
-1年11月30日
The reaction of [Cp*Fe(η5-P5)] with Cu(I)Cl in solvent mixtures of CH2Cl2/|CH3CN leads to the formation of entirely inorganic fullerene-like molecules of the formula [{Cp*Fe(η5:η1:η1:η1:η1:η1-P5)}12{CuCl}10{Cu2Cl3}5{Cu(CH3CN)2}5] (1) possessing 90 inorganic core atoms. This compound represents a structural motif similar to that of C60: cyclo-P5 rings of [Cp*Fe(η5-P5)] molecules are surrounded by six-membered P4Cu2 rings that result from the coordination of each of the phosphorus lone pairs to CuCl metal centers, which are further coordinated by P atoms of other cyclo-P5 rings. Thus, five-and six-membered rings alternate in a manner comparable to that observed in the fullerene molecules. The so-formed half shells are joined by [Cu2Cl3]-as well as by [Cu(CH3CN)2]+ units. The spherical body has an inside diameter of 1.25 nanometers and an outside diameter of 2.13 nanometers, which is about three times as large as that of C60.
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白俊峰, Junfeng Bai, Alexander V. Virovets, and Manfred Scheer*
Angew. Chem. Int. Ed. 2002, 41, No.10,-0001,():
-1年11月30日
Common approaches in the field of self-organization of discrete supramolecular[1] aggregates, networks, and coordination polymers[2] make use of N-donor containing ligands and N-heterocycles to connect different metal centers together. In contrast, however, our goal in this field has been the use of Pn-ligand complexes as linking moieties between metal cations to form well-oriented assemblies as well as onedimensional (1D) and two-dimensional (2D) polymers. The coordination chemistryof Pn-ligand complexes[3] towards cationic metal centers (excluding cationic organometallic complex moieties[4]) has so far been limited to the use of cyclo-P3-ligand complexes, such as [(triphos)M(3-P3)](M Co, Rh, or Ir; triphos 1,1,1-tris(diphenylphosphanylmethyl) ethane), which usually form metal-bridged dimers.[5] In the reactions of the Co complex with CuBr, a multidecker Co complex containing a (CuBr)6 middle deck was obtained,[6] whereas for the Ir complex, the cationic product [{(triphos)IrP3}3Cu5Br4] was formed.[7] However, recentlywe were able to show that [{CpMo- (CO)2}2(, 2-P2)] (Cp C5H5) can be used as a building block to connect CuI and AgI centers to form 1D polymers such as the complexes 1 and 2.[8] Further, we have tried to incorporate compound 3 (Cp* C5Me5)[9] into these investigations. In the past few years, the reaction behavior of 3 has been intensivelyexamined by the group of O. J. Scherer.[3f]
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【期刊论文】Optical-limiting properties of neutral nickel dithiolenes
白俊峰, W.L. Tan, W. Ji, J.L. Zuo, J.F. Bai, X.Z.You, J.H. Lim, S.Yang, D.J. Hagan, E.W. Van Stryland
,-0001,():
-1年11月30日
We report the observation of optical-limiting effects in benzene solutions of two neutral nickel complexes with multi-sulfur 1,2 dithiolene ligands, [Ni(medt)2] 1 (medt D 5,6-dihydro-6-methyl-1,4-dithiin-2,3-dithiolate) and [Ni(phdt)2] 2 (phdt D 5,6-dihydro-5-phenyl-1,4-dithiin-2, 3-dithiolate). The limiting effects were observed with nanosecond and picosecond laser pulses. The limiting thresholds of complexes 1 and 2 were≈0:3J/cm2, measured with the ps laser pulses at 532 nm. The linear absorption spectra of the two complexes indicated that their limiting response should cover the visible and near-infrared region (up to 900 nm). Both ps time-resolved pump-probe and Z-scan experiments revealed that the limiting effects should originate from excited-state absorption and refraction superconductors [16-20]. To our best knowledge, no investigations have been carried out on the optical-limiting properties of dithiolene complexes. Here we report the observation of optical-limiting effects in two neutral nickel complexes with multi-sulfur dithiolene ligands, [Ni(medt)2](medt D 5,6-dihydro-6-methyl-1,4-dithiin-2,3-dithiolate)1 and TNi(phdt)2U (phdt D 5,6-dihydro-5-phenyl-1,4-dithinn-2,3-dithiolate) 2. The observation has been carried out by ns and ps laser pulses at a wavelength of 532 nm. The mechanisms leading to the observed limiting effects have also been investigated.
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白俊峰, Jun-Feng Bai, a, Jing-Lin Zuo, Wei-Lian Tan, b, Wei Ji, Zhen Shen, Hoong-Kun Fun, c, Kandasamy Chinnakali, Ibrahim Abdul Razak, Xiao-Zeng You*a and Chi-Ming Ched
J. Mater. Chem., 1999, 9, 2419-2423,-0001,():
-1年11月30日
Two new nickel complexes containing strongly bound multi-sulfur 1,2-dithiolene ligands, [NBu4][Ni(bddt)2] 1 and [Ni(bddt)2] 2 (bddt=4a,5,6,7,8,8a-hexahydro-1,4-benzodithiin-2,3-dithiolate), have been synthesized and characterized by electrochemical measurements, IR and UV-VIS-NIR spectroscopies. The optical limiting properties of these nickel complexes have been determined with 32 ps laser pulses of 532 nm wavelength. The limiting thresholds of 1 and 2 are ca. 0.6 and 0.7 Jcm-2, respectively, which are comparable to that observed in C60. Such results show that the nickel dithiolene complexes may be new candidates for optical limiting applications. In addition, the neutral complex [Ni(bddt)2] 2, which shows remarkable absorption in the near-IR region (ε=63000dm3 mol-1cm-1 at 1035nm) and is an excellent candidate as a near-IR dye for Q-switching neodymium lasers, has been additionally characterized by X-ray diffraction.
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白俊峰, Manfred Scheer, *[a], Laurence Gregoriades, [a], Junfeng Bai, [a, b], Marek Sierka, [c], Gunther Brunklaus, [d] and Hellmut Eckert*[d]
Chem. Eur. J. 2005, 11, 1-8,-0001,():
-1年11月30日
reaction of the complex [{CpMo(CO)2}2(μ,η2-P2)] (1) with CuI halides leads to the quantitative formation of the novel one-dimensional linear polymers [CuX{Cp2Mo2(-CO)4(μ,η2:η1:η1-P2)}]∞ (X=Cl (4), Br (5), I (6)). The same products 4 and 5 were obtained when 1 was treated with CuCl2 and CuBr2, respectively. The solid-state structures are compared and their remarkable influence on the respective 31P-magic angle spinning (MAS) NMR spectra is interpreted with the help of density functional theory (DFT) calculations on the model compounds [{(CuX)2{Cp2Cr2(-CO)4(μ,η2:η1:η1-P2)}2}3] (X=Cl (4a), Br (5a)) in which the molybdenum atoms are replaced by their lighter homologue chromium.
density funtional calculations
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白俊峰, Jun-Feng Bai, †, Jing-Lin Zuo, *, Zhen Shen, Xiao-Zeng You, Hoong-Kun Fun, ‡, and Kandasamy Chinnakali‡
Inorganic Chemistry, Vol. 39, No.6, 2000,-0001,():
-1年11月30日
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【期刊论文】P2-Ligand Complexes as Building Blocks for the Formation of One-Dimensional Polymers**
白俊峰, Junfeng Bai, Eva Leiner, and Manfred Scheer*
Angew. Chem. Int. Ed. 2002, 41, No.5,-0001,():
-1年11月30日
Self-organisation of discrete units to form supramolecular aggregates and networks of inorganic coordination compounds is a prominent field in contemporary chemistry.[1] Within this field coordination polymers are of interest with regard to their physical, electronic, catalytic, and structural properties.[2] Usual approaches in this area make use of N-donor containing ligands and heterocycles to connect different metal centers together. However, our goal in this field is to use Pn ligand complexes as connecting moieties between metal cations to form well-oriented assemblies as well as one-dimensional (1D) and two-dimensional (2D) polymers.
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