Loading...
中文
Earlier issues
Announcement
More
Progress in Chemistry 2006, No.011 Previous issue Next issue

In this issue:

Invited Article
Polydiacetylene Vesicle —— A Device Based On Molecular Assembly for Biological Molecular Recognition
Jieli Deng,Caixin Guo,Wensheng Lu,Tao Liu,Long Jiang**
2006, 18 (11): 1397-1408 |
Published: 24 November 2006
PDF ( 2279 ) Save Cited
Abstract
Under UV irradiation, ordered diacetylene molecules can be polymerized and form polydiacetylene (PDA) vesicle. Generally speaking, optical absorption in PDA occurs via a π-to-π* absorption within the linear π-conjugated polymer backbone. When decorated with specific probe( receptors)，PDA vesicles will undergo dramatic color changes from blue to red in the direct responding to the ligands on the surface of bio-molecules （eg. DNA, antibody-antigen and the bacteria）to be recognized by ligand-receptor binding at the interface and act as a “reporter” of molecular recognition . In some circumstances the red phase transition accompanies strong fluorescence. The unique chromatic properties of molecular recognition made PDA vesicles a promising biosensor and many biological species, such as virus, bacteria, lipolytic enzyme, antimicrobial peptide，mammalian peptide, ions, antibody-antigen and oligonucleotide etc. have been detected. PDA vesicles can also combine with nanogold for fabricating hollow spheres, which can be used as carrier of nanogold having a better performance for DNA immobilization, recognition and separation. With the improvement of detection conditions and influence factors, PDA vesicles of high sensitivity and high selectivity of recognition could be obtained, showing a great prospect to be applied as biosensors.
Dye-Sensitized Solar Cells
Fantai Kong,Songyuan Dai**
2006, 18 (11): 1409-1424 |
Published: 24 November 2006
PDF ( 6042 ) Save Cited
Abstract
In this paper, we introduce the structure and the principle of dye-sensitized solar cells (DSC). The latest results about the critical technology and the industrialization research on dye-sensitized solar cells are reviewed. The development of key components, including nanoporous semiconductor films, dye sensitizers, redox electrolyte, counter electrode and conducting substrate in dye-sensitized solar cells are reviewed in detail. The developing progress and prospect of dye-sensitized solar cells from small cells in the laboratory to industrialization large-scale production is reviewed. At last, the future development tendency of dye-sensitized solar cells is prospected.
Review
Advanced of Wetting Behavior Research on the Superhydrophobic Surface with Micro- and Nano-Structures
Jianhai Xu,Mei Li,Yan Zhao,Qinghua Lu**
2006, 18 (11): 1425-1433 |
Published: 24 November 2006
PDF ( 5527 ) Save Cited
Abstract
In this paper,advance of wetting behavior research on the superhydrophobic surface with micro- and nanao-structures is reviewed, including fabrication methods of superhydrophobic surfaces with micro- and nano- structures, influence of the micro- and nano- structures on wetting behavior, superhydrophobic criterions of surfaces with periodic structures, contact angle hysteresis and functionalization of superhydrophobic surfaces. Problems existed in this research field and possible prospects of superhydrophobic surfaces with micro- and nano- structures are discussed.
Studies on Super-Hydrophobic Films
Ailan Qu,Xiufang Wen,Pihui Pi,Jiang Cheng,Zhuoru Yang**
2006, 18 (11): 1434-1439 |
Published: 24 November 2006
PDF ( 4441 ) Save Cited
Abstract
Super-hydrophobic film is of promise prospect applied in various industrial products.But it is limited by preparing techniques for use as coatings of outside building and large equipments.It is the aim to search simple and effective methods to prepare and control the micro-nano-binary-structure to get super-hydrophobic coating.Here we briefly review the development of the theory and recent progress in the process and properties of super-hydrophobic films.It is a possible way to realize industrial production of super-hydrophobic coating with appropriate roughness and microstructure by the combination of different technologies such as sol-gel,phase separation and self-assembly of low surface-energy materials.
The Interaction between DNA and Amphoteric Surfactants
Yanqing Sun1,Jian Zhang2,Gaoyong Zhang1**,Hongxia Wang1
2006, 18 (11): 1440-1445 |
Published: 24 November 2006
PDF ( 1689 ) Save Cited
Abstract
The Research Progress of interaction between DNA and amphoteric surfactant is reviewed. Relevant studying methods of interaction-observering and complex-charactering, such as fluorescent microscopic technology, light scattering, phase diagram and turbidimetric titration are expatiated. Owing to the characteristic of amphoteric surfactant, in specific range of pH it could induce discrete conformational transition of DNA from unfolded coil to compacted globule by electrostatic attraction. Interaction between DNA and amphoteric surfactant is controlled by pH and ion strength. The DNA-amphoteric surfactant complexes have potential application as gene vectors.
Structures and Spectra of fullerene oxides
Hui Sun,Qiwen Teng*,Shi Wu
2006, 18 (11): 1446-1451 |
Published: 24 November 2006
PDF ( 1192 ) Save Cited
Abstract
Fullerene oxides played an important role in studying functionalization of carbon clusters, which stimulated the interest of scientists. The progress in study of the structures, electronic spectra, IR spectra and NMR spectra for the fullerene oxides C60On, C70On, C76On, C78On and C80On is reviewed comprehensively. Relevant works worldwide hitherto are introduced. The regularity of structural characteristics and spectroscopy for fullerene oxides is further explored according to author’s own theoretical research in this field. Based on the agreement between calculating and experimental results on oxides of C60 and C70, the structures and spectra of oxides for higher fullerenes are predicted.
Development of TiO2 Photo-Anodes in Dye-Sensitized Solar Cells
Yong Zhao,Xianliang Sheng,Jin Zhai**
2006, 18 (11): 1452-1459 |
Published: 24 November 2006
PDF ( 2039 ) Save Cited
Abstract
The development and application of TiO2 photo-anodes in dye-sensitized solar cells (DSSCs) are reviewed. The preparation methods for TiO2 photo-anodes are summarized. Improvements of the photo-electric characteristics induced by introduction of a series of advanced materials and structure, such as composite core-shell structure, doped TiO2 electrodes, optimized materials and hierarchical structures，are discussed in detail. Fabricating the TiO2 porous films with excellent light harvesting, quick charge transport and efficient suppression of charge recombination is the purpose of further development.
Chemical Preparation of Iron Oxide Nanoparticles and Assemblies
Ke Tao,Hongjing Dou,Kang Sun**
2006, 18 (11): 1460-1467 |
Published: 24 November 2006
PDF ( 2511 ) Save Cited
Abstract
The research of magnetic nanoparticles has been intensively pursued for their potential applications in magnetic recording media, ferrofluid, catalysts, and especially in biomedical fields. The chemical strategies for preparing magnetic iron oxide nanoparticles are reviewed and generalized in metathesis strategy and pyrolytic decomposition strategy in this paper. The recent research progress of the assemblies containing magnetic iron oxide nanoparticles is highlighted, and the developing trend of magnetic iron oxide is proposed.
Progress in Palladium Composite Membranes
Wei Liu,Baoquan Zhang**,Xiufeng Liu
2006, 18 (11): 1468-1481 |
Published: 24 November 2006
PDF ( 1984 ) Save Cited
Abstract
Palladium composite membranes have attracted wide attention in membrane technology because of their excellent permeability,perm-selectivity,as well as chemical and thermal stabilities. This review discusses the principle and influence factors of hydrogen permeation,the membrane synthesis and the applications. The progress over the last three years in the preparation of Pd-based membranes,particularly, the novel preparation technique at supercritical conditions, is emphasized. The representative researches are summarized on applications of palladium composite membranes in dehydrogenation, partial oxidation and coupling reactions. The trend in preparation and applications of palladium composite membranes is outlooked.
The Research Progress of Mesoporous Alumina
Chuanrun Li,Yisi Feng*,Qinghua Yang
2006, 18 (11): 1482-1488 |
Published: 24 November 2006
PDF ( 3058 ) Save Cited
Abstract

Surface areas exceeding 350m2/g,pore sizes ranging from 2 to 50nm and with a narrow pore size distribution are characteristics of mesoporous alumina(MA). The new kind of lacunaris alumina shows a certain potential in catalysis, and appears very challenging for material application. Recent advances in the field of mesoporous alumina is reviewed with 64 references. Various synthesis approaches including neutral, anionic and cationic toutes, characterization of structure by various experimental techniques including XRD,N2-sorption isotherms,TEM and 27Al MAS NMR, and their applications in catalysis and adsorption are discussed in detail. The development trend in this field is also elucidated.

The Application of Chiral Ferrocene Ligands in Palladium-Catalyzed Asymmetric Reactions
Zhende Liu,Xuchang He**
2006, 18 (11): 1489-1497 |
Published: 24 November 2006
PDF ( 1956 ) Save Cited
Abstract
This article briefly describes recent progress on palladium2catalyzed asymmetric allylic substitution reactions using chiral ferrocene ligands , including allylic alkylation , allylic amination and allylic sulfonylation. The Claisen rearrangement , Diels-Alder reaction , Heck reaction , asymmetric carbonylation , asymmetric hydrosilylation and C-C bond cleavage using chiral ferrocene ligands as catalyst are also reviewed. Some reaction mechanisms and perspective are discussed.
Polymer Electroluminescent Materials with 1,3,4- Oxadiazole
Chunpeng Chai,Xinghe Fan**,Xiaofang Chen,Qifeng Zhou**
2006, 18 (11): 1498-1507 |
Published: 24 November 2006
PDF ( 1418 ) Save Cited
Abstract
Polymer containing 1,3,4-oxadiazole, a new kind of electroluminescent polymer materials, has attracted great attention in the last decade. These polymer materials can be prepared through different methods, which provide great convenience to the design of materials. This article summarizes recent progress in polymer electroluminescent materials based on 1, 3, 4-oxadiazole. The possible topics in polymer electroluminescent materials are discussed. It is expected that these materials will be widely used in the field of electroluminescent in the near future due to their excellent thermodynamic and optical properties.
Hydrophillic Interaction Chromatography and Its Applications in the Separation of Basic Drugs
Ruiping Li1*,Junxiong Huang2
2006, 18 (11): 1508-1513 |
Published: 24 November 2006
PDF ( 1935 ) Save Cited
Abstract
Hydrophilic interaction chromatography(HILIC) is a convenient method for separating basic drugs and their metabolites which have poor retention on reversed-phase column by passing highly polar organic-aqueous buffer mobile phase across a polar stationary phase.The mechanism and characterization of HILIC using silica column/reversed-phase elution system are described. In addition, the recent progress of its applications in the separation of basic pharmaceuticals is reviewed.
Conformation Studies of Silk Proteins with Infrared and Raman Spectroscopy
Wen Zhou,Xin Chen**,Zhengzhong Shao
2006, 18 (11): 1514-1522 |
Published: 24 November 2006
PDF ( 2515 ) Save Cited
Abstract
The properties of silk fibers and relevant silk protein materials are highly related to the secondary structure, i.e. the conformation of silk protein itself. Both infrared and Raman spectroscopy are the powerful tools for the investigation of the protein conformations, so they are widely used in the study of silk proteins as well. In this review, the research of the structures on the domestic silkworm(Bombyx mori), the wild silkworms (mainly tussah)as well as the spiders’ silk proteins with the infrared and Raman spectroscopy are discussed, and the characteristic peaks of silk proteins related to the various conformations are summarized.
Fluorescent Nanoparticle Labeled Immunoassay
Juan Kang,Xinxiang Zhang**
2006, 18 (11): 1523-1529 |
Published: 24 November 2006
PDF ( 2096 ) Save Cited
Abstract
Fluorescent nanoparticles are popular labels in immunoassay research. They effectively increase the number of fluorescers on a detection molecule and contribute to ultra high sensitivity. But there are many differences in labeling and immunoassay of nanoparticles from conventional fluorescent labels. This restrains their broad application in diagnosis. The labeling methods, immunological configurations and influence factors of fluorescent nanoparticles in recent years are reviewed.
Enzymatic Biofuel Cells
Qiang Liu1,2,Xinhua Xu2*,Guanglei Ren2,Wei Wang1
2006, 18 (11): 1530-1537 |
Published: 24 November 2006
PDF ( 3234 ) Save Cited
Abstract
The recent research progress of enzymatic biofuel cells including the properties, structure and components of biofuel cells are briefly reviewed. The details of preparation methods of enzymatic electrodes and the recent advance in electrode materials of the biofuel cells are especially described. The existing problems and development foreground are also discussed.
Organic Transistors of Small Molecular Weight Materials
Qingxin Tang,Rongjin Li,Haifeng Wang,Hongxiang Li,Wenping Hu**
2006, 18 (11): 1538-1553 |
Published: 24 November 2006
PDF ( 2412 ) Save Cited
Abstract
As a new generation of transistors, organic field-effect transistors (OFET) have advanced greatly not only in the technology of fabrication but also in the performances of devices and thus attracted particular attention recently. In this paper different kinds of small molecular weight materials for OFETs are introduced.
Perchlorate Related Environmental Problems
Yaqi Cai**,Yali Shi,Ping Zhang,Shifen Mou,Guibin Jiang
2006, 18 (11): 1554-1564 |
Published: 24 November 2006
PDF ( 3655 ) Save Cited
Abstract
Perchlorate is a new emerging persistent pollutant that can diffuse rapidly in environment, and it is very stable and difficult to be degraded in environment conditions. Perchlorate related environmental problems have attracted a great attention from many scientists. However, few reports of perchlorate pollution status have been reported in China. This paper reviews the characteristics, toxicological effects, pollution status, environmental behavior, analytical method and remediation of perchlorate with 131 references. The currently existing problems and trends are also discussed.
Advances in Atmospheric Ozone Chemistry
Long Jia1,2,Maofa Ge2**,Yongfu Xu3,Lin Du2,Guoshun Zhuang1,Dianxun Wang2
2006, 18 (11): 1565-1574 |
Published: 24 November 2006
PDF ( 3928 ) Save Cited
Abstract
Ozone is key species in atmospheric chemistry. Stratospheric ozone is considered to be " a protective umbrella of earth life" because it absorbs biologically harmful ultraviolet radiation from the sun. In the natural air of the troposphere a suitable amount of ozone is beneficial to clean air. However,due to the increase in the emission of ozone precursors in the troposphere ,particularly in large cities, the generated ozone with high concentrations can lead to severe pollution, which is harmful to humans, animals, plants and ecological environment. Studies of ozone atmospheric chemistry are generally carried out in terms of the combination of field observation, simulation experiments using smog chamber in the laboratory and numerical simulations on the computer.The further research on atmospheric ozone chemistry is very helpful not only in understanding oxidation processes in the atmosphere and self-cleaning capacity on the regional and global scale,but also in providing scientific basis and methods for pollution controlling in the trosposphere. This paper summarizes the progress in the ozone chemistry in rescent years, and discusses the relations between ozone and main environmental problems that human beings are facing with. The emphasis is placed on reviewing the ozone hole in the Antartic, low values of ozone in the middle latitudes and the mechanism of depletion of ozone in the Arctic, and their development trends in rescent years. The coupling relations of ozone with atmospheric photochemistry and aerosols are reviewed. Moreover, according to real situations in China , some important scientific problems are put forward for the future research on atmospheric ozone chemistry.