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Progress in Chemistry 2004, No.06 Previous issue Next issue

In this issue:

Review
Progress in Preparation Methods and Applications of Aligned Carbon Nanotubes
Mi Wanliang1,Lin Yaosheng1,2**,Zhang Booquan1,Li Yongdan1,Jiang Haiyang1
2004, 16 (06): 843- |
Published: 24 November 2004
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Abstract
Carbon nanotubes have bright future of application, but most of the applications require aligned carbon nanotubes. The synthesis methods and research progress for preparation of aligned carbon nanotubes are introduced. The characteristics of current preparation methods and the growth mechanisms of different preparation methods for aligned car-bon nanotubes are discussed . Finally, the potential applications of aligned carbon nanotubes together with some novel ap-plication ideas are supplied.
Advances in Electrorheological Fluids
Pang Xuelei,Tang Fangqiong*
2004, 16 (06): 849- |
Published: 24 November 2004
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Abstract
Electrorheological fluids (ERF) have been of both academic and industrial interest due to their potential application in engineering field and economic benefits since they were discovered in 1940s. The compositions of the elec-trorheological fluids, the progress of the electrorheological materials, the dominating effects on the electrorheological effect and the progress of the application of ERF are summaiized.
The Solubility of Solid in Ternary Supercritical Fluid Systems
Quan Can,Li Shufen*
2004, 16 (06): 858- |
Published: 24 November 2004
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Abstract
The solubility data of solid solute in certain supercritical medium is the fundament to the development of supercritical fluid technology. The updating solubility research on ternary system including solid solute, supercritical fluid and modifier are reviewed extensively in this paper, with the highlight in some useful action mechanisms and calculation models about modifier solubility enhancement. Moreover, as for those ternary systems with two solid solutes coexisted in a pure supercritical fluid, the related theoretical mechanisms and calculation models about the solutes' mutual influence on solubility are discussed.
MS and NMR Technologies Progress in the Analysis of Natural Products

Chen Bin, Kong Jilie*

2004, 16 (06): 863- |
Published: 24 November 2004
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Abstract
The structural analysis of natural products is a very important and active research field. The useful bio-active compounds including all sorts of potential novel medicines can be found and utilized through the relevant research. The development of new technologies in this field has been and will still be a challenge for researchers. The recent devel-opment of the new technologies applied in the fields, including MS, NMR and the coupling technologies are reviewed.
Laser-Induced Fluorescence Detection in Ultratrace Analysis
Yang Bingcheng,Guan Yafeng*,Tan Feng
2004, 16 (06): 870- |
Published: 24 November 2004
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Abstract
The present status and the trends of development of laser-induced fluorescence detection(LIF-D) are re-viewed. The parts of the LIF-D setup including lasers, filters, objectives, photoelectronic detectors, fluorescence probes and scanning instruments are discussed. Single molecule detection based on LIF-D is also described.
Application and Development of Synchronous Fluorescence Spectrometry
He Lifang1,2,Lin Danli1,Li Yaoqun1*
2004, 16 (06): 879- |
Published: 24 November 2004
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Abstract
Synchronous fluorescence spectrometry is useful in simultaneous determination of multi-component fluo-rescent substances. Its application and development in recent years are reviewed. Synchronous fluorescence approaches, including constant-wavelength synchronous fluorescence, constant-energy synchronous fluorescence, variable-angle syn-chronous fluorescence, isopotential matrix synchronous fluorescence, and the combination with the derivative technique, stoichiometry and cryogenic technique are discussed.
Temperature Measurement Techniques for Microfluids
Dai Jing1,2,Wang Shili1,FAng Zhaolun1**
2004, 16 (06): 886- |
Published: 24 November 2004
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Abstract
Temperature measurement techniques for microfluids in capillary and microfluidic systems are reviewed, eluding exterior contact methods, fluid physical-pararneler-based methods, thermo-sensitive marker methods, NMR and aman spectrometric methods, and laser-based interface measurement technique.
Recent Advances in Sulfur Resistant Aromatic Hydrogenation Catalysts
Liu Dapeng,Li Yongdan**
2004, 16 (06): 891- |
Published: 24 November 2004
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Abstract
The hydrogenation of aromatics received increasingly attention recently owing to the limitation of environ-mental protection legislation. The thermodynamic and kinetics behaviors of aromatic hydrogenation are simply described. Various catalysts for sulfur resistant aromatic hydrogenation and especially their hydrogenation mechanisms are sum-marizal . Sulfur poisoning of transition metal catalysts is interpreted in detail due to its complex influence on the catalysts' performance.
Advances in Light Alkenes Production by Hydrocarbon Selective Oxidation
Liu Xuebin,Zhu Haiou,Ge Qingjie,Li Wenzhao*,Xu Hengyong
2004, 16 (06): 900- |
Published: 24 November 2004
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Abstract
light alkenes production by hydrocarbon selective oxidation is one of the promising alternative ways to replace conventional steam cracking. In this paper, the recent advances, developing trends and existing problems in this research field are reviewed. Emphases are put on the work with outstanding results and novel research hotspot.
Recent Developments in Linear Chain Clusters of Low-Valent Platinum Group Metals
Wu Deyou,Zhang Tianle*
2004, 16 (06): 911- |
Published: 24 November 2004
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Abstract
There are considerable interests in linear chain clusters because of the polynuclear metal-metal bonding, structures, potential applications as molecular wires and low-dimensional materials with unusual properties. In the low oxidation states, platinum group metals have a tendency of aggregating to form clusters containing polynuclear metal chain. Tlae progress in linear chain clusters of low-valent platinum group metals is briefly reviewed.
Ligand-Mediated Asymmetric Addition of Organometallic Reagents to Imines
Wang Mincan,Wang Dekun**
2004, 16 (06): 918- |
Published: 24 November 2004
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Abstract
Asymmetric addition of organometallic reagents to imines is a fertile method for the synthesis of optical active amines, an important class of compounds in biochemistry as well as in pharmaceutics. The recent advances in external ligand-mediated addition of organometallic reagents to imines for the asymmetric synthesis of chiral amines are reviewed.
Development of the Anodic Cyanation Reaction
Zhao Ping1,Yin Yingwu1,2**
2004, 16 (06): 926- |
Published: 24 November 2004
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Abstract
A comprehensive review on the recent development of anodic cyanation reaction used in electroorganic synthesis is given in this paper. The research on anodic cyanation of amine, heterooyclic compounds and aromatic com-pounds is presented. Furthermore, the emulsion technology used in anodic cyanation is discussed in detail.
Recognition of Bioactive Molecules by Calixarenes
Zhang Chun,Zheng yansong**,Mei Fuming,Li Guangxing
2004, 16 (06): 934- |
Published: 24 November 2004
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Abstract
Calixarenes, the synthetic macrocycles derived from the condensation of phenols and formaldehyde, dis-play recognition abilities to many guest molecules including those having biological activity on account of their hydrophobic cavities and are easily modified at the lower-rim or the upper-rim. In this paper the recognition of amino acids, sacchar-ides, peptides, proteins and chiral drugs by calixarenes is reviewed.
Recent Development in Catalytic Carbonylation of Nitrogen Containing Compounds
Shi Feng,Zhou hancheng,Chen nan,Zhang Qinghua,Deng Youquan**
2004, 16 (06): 940- |
Published: 24 November 2004
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Abstract
The recent development for synthesis of carbamate and disubstituted ureas is summarized. The catalyst systems, including palladium, ruthenium, rhodium, selenium and gold, for reductive carbonylation of nitro compounds or oxidative carbonylalion of amine using carbon monoxide and the base catalyst for carbonylation of amines by carbon diox-ide and dimethyl carbonate are described.
The Homogeneous Reactions of Cellulose
Ren Tianrui*,Shen Bin,Li Yonghong,Wan Junjie
2004, 16 (06): 948- |
Published: 24 November 2004
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Abstract
The development of cellulose homogeneous reactions in recent years was described. The homogeneous re-actions of cellulose such as esterification, cross linkage, etherification, graft polymerization in the solvents of PF/DMSO, LiCl/DMAc,N2O4/DMF,benzene/DMSO,LiCl/DMI and water are studied.The analytic methods of the homogeneous deri-vation of cellulose are summarized. The merits and faults of those methods, as well as application prospects are discussed.
"Living"/Controlled Polymerization of Fluoroalkyl (Meth)acrylate
Yi Lingmin,Zhan Xiaoli**,Chen Fengqiu
2004, 16 (06): 954- |
Published: 24 November 2004
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Abstract
As a special kind of fhioropolymers, (meth) acrylate polymers with fluoroalkyl side chains exhibit unique surface properties and optical characteristics, but their further applications are limited because the traditional free radical polymerization is unable to control the polymer microstructure and the distribution of fluorine. Living polymerization meth-ods provide an efficient route to polymer chain architecture. Fluorine- containing block polymeric materials with anticipat-ed structures and properties can he synthesized by living polymerization techniques. Due to the fluoroalkyl side chain, the living polymerization of fluoroalkyl (meth)acrylate thus has its specialties. In this paper, the living anionic polymeriza-tion, group transfer polymerization and living radical polymerization of fluoroalkyl (meth)acrylate are reviewed.
Determination of the Intracellular NAD(P)H Level
Chen Yahong,Liu Zhihong,Cai Ruxiu**,Liu Zhixin
2004, 16 (06): 962- |
Published: 24 November 2004
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Abstract
The intracellular NAD(P)H level plays a pivotal role in numerous biological process such as rhythm, se-nescence, cancer and death. The study of the intracellular NAD(P)H level is one of the hotspots in biomedical research. In this paper, current technical development in determination of the intracellular NAD(P)H level is reviewed.
The Development of Ruthenium Complexes as Anticancer Drugs Activation and Anticancer Mechanism
Liu Jie**,Ji Liangnian,mei Wenjie
2004, 16 (06): 969- |
Published: 24 November 2004
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Abstract
Metal complexes, especially ruthenium complexes, play a very important role in the field of medicine. The studies on the anticancer activity of ruthenium complex have make progress in last decades. Based on the studies of authors' laboratory, the development of ruthenium complexes as anticancer drugs, as well as their possible anticancer mechanisms is reviewed.
Application of Microfluidic Chip Systems for the Research of Single Cell
Gao Jian,Yin Xuefeng**,Fang Zhaolun
2004, 16 (06): 975- |
Published: 24 November 2004
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Abstract
The development of microfluidic chip system provides a new platform for the research of single cell. Be-cause the sophistication and variety of microdevices and systems being built, the ability to study life at the cellular level and below is extended. On the microfluidic chip, an individual cell can be controlled and handled easily by use of pneu-matic pressure, hydraulic pressure, voltage, dielectrophoresis force (DEP), optical trapper, traveling-wave dielectro-phoresis (twDEP) and magnetic field, etc. The couplings of above techniques with microfluidic chip systems can operate the single cells to transit or dock anywhere in the micro channels. So the operations of single cell's counter, sorting and analysis were achieved conveniently. In this paper, the applications of microfliudie systems on blood rheology, counter or sorting, and intracellular contents analysis are reviewed. Several microfliudie chip.systems used for study single cell are introduced. The operation methods on single cell are discussed.
The Self-Association Behavior of Chitosan and Its Hydrophobic Derivatives
Sun Shujun,Liu Wenguang**,Yao Kangde
2004, 16 (06): 984- |
Published: 24 November 2004
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Abstract
Over the past decades, much progress has been made in the theoretical research and the application of hydrophobically-modified polyelectrolytes(HMPEs) .The HMPEs show unusual rheological features and high solubilization properties, which are generally considered to originate from the inter-or intra interaction of hydrophobic moieties. In this article, the latest progress in the study on the self-association behaviors of chitosan, deoxycholic acid-, alkyl- and palmitoyl-modified chitosan derivatives is reviewed. Their applications in drug delivery system and transgenic vectors are described as well.
Carbonylation Reactions of Heterocycles
Liu Jianhua,Chen Jing*
2004, 16 (06): 989- |
Published: 24 November 2004
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Abstract
The research progress on carbonylation reactions of heterocycles (such as epoxides and aziri dines) during the last 40 years is reviewed in the presence of transition metal complex catalysts. The reaction mechanisms of both carbonylative ring expansion and carbonylative polymerization are discussed in detail. The perspective on this research field is also suggested.
Acrylamide in Foodstuffs and Its Formation Mechanism
Liu Jiyan,Jiang Guibin**
2004, 16 (06): 1000- |
Published: 24 November 2004
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Abstract
In 2002, the Swedish National Food Administration and a research group announced that a toxic compound, acrylamide, is formed in starch-rich foods during preparation procedure and cooking at high temperatures. Several possible mechanisms were suggested. Based on this, widely research has been carried out in different countries. The study on acylamide in foods is reviewed in this paper.
Preparation and Applications of Injectable Hydrogels
Wei Hongliang,Wang Liancai,Zhang Aiying,Zhu Kaiqiang,Feng Zengguo**
2004, 16 (06): 1008- |
Published: 24 November 2004
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Abstract
Injectable hydrogels have been developed for biomedical applications, such as surgical reconstruction, controlled drug release and cell encapsulation. With respect to this new research direction in biomedical materials, recent progress in injectable hydrogels and their synthetic methodologies and applications are summarized. Finally, the development prospects of injectable hydrogels are also presented.
Hypoxia in Tumour and Hypoxic Selective Anticancer Drugs
Yang Pin*,Guo Chunli,Zhao Guanghua,Yan Jun
2004, 16 (06): 1017- |
Published: 24 November 2004
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Abstract
The new ideas for designing anticancer drugs are introduced. The cause of producing hypoxia, the effect of chemotherapy and radiation therapy, and the methods for overcoming the effect are discussed. The focuses are especially on the development of hypoxic selective anticancer drugs. The perpective in this research field is presented.
Developments of Bionic Polymers
Guo Xinglin,Xie Qiongdan,Zhao Ning,Liang Songmiao,Wang Dujin,Xu Jian**
2004, 16 (06): 1023- |
Published: 24 November 2004
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Abstract
Recent developments on bionic structure and function polymers, such as mulli-class structure of biomaterials, biomimetic of lotus effect and its applications, smart hydrogel, artificial extracellular matrix for cell culture, and biomimetic of biomineralization are reviewed. The possible topics of polymer materials in the field of bionic science are discussed.