Synthesis of Organic One-Dimensional Nanomaterials by Solid-Phase Reaction During the past decade, the synthesis and functionalization of one-dimensional (1D) nanomaterials has become one of the most highly energized research areas.... （请下载全文欣赏）

Electrochemical Deposition of Conductive Superhydrophobic Zinc Oxide Thin Films Mei Li, Jin Zhai, Huan Liu, Yanlin Song, Lei Jiang,* and Daoben Zhu Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China ReceiVed: June 4, 2003; In Final Form: July 15, 2003 A simple method of electrochemical deposition was adopted to prepare conductive hydrophobic zinc oxide (ZnO) thin films. The surface structures were characterized by sanning electron microscopy (SEM) and atomic force microscopy (AFM). Wettability studies revealed that the surface of the as-prepared thin films showed a contact angle (CA) for water of 128.3 ( 1.7°, whereas the superhydrophobic surface with a water contact angle of 152.0 ( 2.0° was obtained by (fluoroalkyl)silane modification. The superhydrophobic conductive thin films materials may have potential use such as microfluidic devices in the future. It is likely that other oxide materials may be similarly prepared by this method. （请下载全文欣赏）

Synthesis and Characterization of Conducting Polyaniline/γ- Fe2O3 Magnetic Nanocomposite In this paper, Pan/γ-Fe2O3 nanocomposite with conducting and magnetic properties were prepared by a simple chemical “modification-redoping” method. The products were characterized by TEM, XRD, UV-Vis, Four-probe method, and SQUID. The modified-redoped products not only are transparent, but also have a good quality in magnetic and electrical properties. (请下载全文欣赏)

Reversible Super-hydrophobicity to Super-hydrophilicity Transition of Aligned ZnO Nanorod Films

This communication describes the use of a polyelectrolyte multilayer as a preformed matrix in electrochemical deposition to adjust the morphology of gold clusters, leading to the fabrication of a super-hydrophobic surface. The polyelectrolyte multilayer is fabricated by layer-by-layer (LbL) self-assembly technique, as introduced first by G. Decher.1 The LbL technique has proved to be a versatile method to assemble layered nanostructures with tailored composition and architecture,2 and it has been shown to have promising applications in areas such as chemical sensors or biosensors,3 enzyme immobilization,4 hollow capsules,5 surface patterning,6 separation membranes,7 microporous films,8 lightemitting diodes,9 erasable films,10 and nanocomposites.……

Using different filter membranes it was shown that with the OCA20, using modern speed optimum video measuring technology, it is possible to directly and simply analyze the faster absorption processes. Only through the timely and exact determination for example, of the volume of a liquid drop on absorbent membranes, can the details of the absorption process be deduced and thereby the desired material properties optimized.

Creation of a Superhydrophobic Surface from an Amphiphilic Polymer*

Control over the Wettability of an Aligned Carbon Nanotube Film

Reversible Switching between Superhydrophilicity and Superhydrophobicity**

德国应用化学收录文章：在全PH值范围内的纳米结构化碳膜的超疏水性

A few words on the history and future of surface chemistry For more than 400 years, important scientists and mathematicians like Leonardo da Vinci, Isaac Newton, Pierre Simon Laplace, Thomas Young, Siméon Denis Poisson, Josiah Willard Gibbs, Frederick M. Fowkes have done valuable pioneer work for the explanation of surface tension, capillarity, wetting and other interfacial problems. As a sector of physical chemistry, surface chemistry in connection with colloid chemistry established itself as an independent science about 70 years ago. Important milestones in modern theory and practice of wetting properties are the works of Girifalco/ Good and Fowkes from the 50s and 60s of this century. They formed the basis for the analysis and optimization of solid and liquid interfaces frequently applied today. Although most of us don''t realize it, interfacial processes rule our everyday life wherever we go. A multitude of processes, whether in a household or in industrial production, is influenced by interfaces and their chemical state. All known high technologies with a promising future, like wafer and chip production, biochemistry and gene technology as well as micro-system technology benefit in particular from the increasing understanding of interfacial correlations. The DataPhysics team would like to take you on a little tour of this exciting world.

For performing the contact angle, surface tension and interfacial tension measurements on the contact adhesives, the knowledge of certain liquid parameters against the temperature is required. For the liquids used as polar or disperse reference liquids, these data are available from DataPhysics instruments GmbH, Filderstadt, on request.

The OCA20 offers an easy way of determining the surface energy of polymer surfaces. For the case of serial examinations on the same, only slightly modified materials as they often occur in industrial production, a method has been developed which further facilitates the determination of the surface energy. Here, the measurement of a contact angle with just one liquid is needed, thus considerably reducing the time needed. The example of PP films, which were submitted to different surface treatments, showed that the new method can predict the surface energy with an accuracy of 2﹪.

The new DataPhysics lamella method was introduced, which permits the rapid and easy determination of the surface tension of liquids at temperatures up to 400℃. With the example of a high viscous hotmelt adhesive, an accuracy of the method of 1﹪was achieved.

The OCA20 and the software modules SCA2 and 21 offer an easy way to determine the surface energy of polymer surfaces. The polar portions of the surface energy responsible for the adhesion of coatings can be quantitatively collected by means of the contact angle measurement. In this way, wetting and adhesion properties can be predicted. Compared to the use of test inks to estimate the surface free energy, the present method has the advantage of providing a greater accuracy and let to additional information the polar and dispersive contribution of the surface free energy, which governs printability or adhesion. At the same time being independent of the experimenter, thus ruling out subjective influences.

A method has been presented that simply and precisely establishes the surface tension between printing ink and fountain water. With the examples of coloured inks and fountain water, which are currently under further development in industry, it has been shown that an exact assessment of the surface tension limits between printing inks and fountain water is only possible if one establishes the exact surface tension. The over all surface tension alone is not enough to predict the relationship of liquids to each other.