Nanometric sodium hydride (NaH*) possesses a large specific surface area. Its chemical reactivity is in orders of magnitude higher than that of the conmercial one. After heat treatment at 2ll℃, the specific surface area of NaH* becomes smaller whereas its chemical reactivity is even higher. This fact indicates that the specific surface area of NaH* particles is an important but not the only factor for its high reactivity. NaH treated at (400℃, 6h) still retains a specific surface area of 30m2 g-1 and gives fairly high chemical reactivity.

The effects of surfactants with different charge on the interaction of methylene blue(MB)and AgCl nanoparticles in reversed micelles have been studied. The adsorption of methylene blue on the AgCl nanoparticles and fluorescence quenching of methylene blue by AgCl nanoparticles have been discussed.

The spectral behavior of pyrazoline derivative 1-phenyl-3-(4-N,N-dimethylaminostyryl)-5-(4-N.N-dimethylaminophenyl)-2-pyrazoline in various solvents have been studied. According to the results obtained the general effects and the specific effects of interaction between the molecule of this derivative and the solvents used were investigated. It was found that the fluorescence quenching of pyrazoline solution by different species can be used as a method for studying both general and specific interaction between pyrazoline derivative and molecule of solvents.

The Fe-Mo alloy induced-codeposition has been studied by in situ surface Raman spectroscopy. In the solution containing 0.2mol•L-1 Na2MoO4．pH＝4．0．the Raman spectra showed three peaks at 940,880 and 450cm-1 corresponding to polymolybdated species on the surface at open circuit potential and -0.3V(vs SCE) at the potential-0.5V, new peaks at about 730, 560, 510, 470 cm-1 appeared in the spectra while a blue film was observed on the surface which can be attributed to mixed-oxidation molybdenum oxides formation. The peak at 730cm-1did not disappear even the potential moved to -1.9V, indication the film annot be further reduced. But in the solution of Na2MoO4 containing 0.1 mol•L-1 FeSO4 and 0.2mol•L-1 citric acid, the peak of mixed-oxidation oxides shifted to 740cm-1 and this peak could fade away gradually in potential region from -1.3 to -1.9V while a silver-white deposit emerged on the surface The results showed that the structure of mixed-oxidation Mo oxides film codeposited with Fe2+ was different from that of the film deposited without Fe2+. The former can be further reduced to form Fe-Mo alloy．

Molecular organized assemblies of 1:1 mixed solution of sodium alkylcarboxylate-alkyltrimethylammonium bromide were investigated in formamide(FA) and FA/water mixtures. The critical micelle concentration(cmc) values of catanionic surfactants determined by the surface tesion curves increase as the fraction of FA in the mixed solvents increases. Above the Kraft point(~45°C), micellization and surface adsorption properties of mixed surfactants in FA were studied. The cmc is 0.167,0.172 and 0.179mol-dm-3 for 50,55 and 60℃. The standard thermodynamic parameters of micellization for catanionic surfactants in FA were calculated according to the model of charged pseudo-phased separation The influence of FA addition on catanionic surfactant vesicle was also studied.

On the basis of the Coats-Redfern's integral equation and Ozawa's equation. the probable mechanism of the dehydration process of FeC2O4 2H2O was investigated using double extrapolation. The dehydration Process includes two steps. The first step is the nuclear producing and growing process(n=1.5), G(α)= [ln(1-α)]1/1.5; the second step is a two-dimensional diffusion process, G(α)=(1-α)ln(1-α)+a: the corresponding kinetic parameters were determined.

The method of quantitative determinaltion of "hydroxyl nests" by DTA and TGA was established. The concentration of "hydroxyl nests" for NH4Y and NaY zeolites dealuminated with an aqueous oxalic acid solution was determined by snch method. The results indicated that the "hydroxyl nests" concentration of the dealuninated zeolite sample is compatible with its number of actual dealumination per gram. This shows that after a framework aluminum of zeolite was removed by acid, a "hydroxyl nests" formed conclusively.

The liquidus of Sn-In-Zn system was determined by means of DTA technique. It was proved that the system has a ternary eutectic point at 108℃ containing Sn:46, In:52, Zn:2(100w). Based on the phase diagram and the DTA results. the optimum component of Sn-In-Zn alloy used for lead-free solder is recommended as(6.7Zn--8.0In-85.3Sn) with a melting temperature of 188℃.

The reaction mechanism of the singlet biradical CF2 with O3 has been studied by using ab initio method at 6-31G(d) level. The single point energy calculations of the reactants, intermediate, transition state and products of the reaction have been performed by MP2/6-31G(d)method The relative structure data of the reaction species are given The mechanism proposed here is that there are two stages in the reaction the reactant molecules combine first to form an stable energy-enriched intermediate, this stage has no energy barrier, and then the intermediate is decomposed to D=CF2O and O2 the energy barrier of this stage is 230.73 kJ•mol-1(MP2/6-31G(d)HF/6-31G(d)). The reaction is exothermic by 461.06 kJ•mol-1(MP2/6-31G(d)HF/6-31G(d)). The potential energy curve along the reaction path has been obtained by IRC calculations.

The dielectric spectroscopy of polydimethylsiloxane is measured in temperature range of 190 to+120℃ The variation of frequency domain dielectric constant is very small, but time domain slow dielectric constants have high peaks at 120 and +80℃. According to H31 structure of molecule, the results can be explained. The time domain method can detect trace impurity of water to2×10-7 in polydimethylsiloxane.

The adsorption property of a new amphoteric graft copolymer of carboxymethyl cellulose with acrylamide and dimethylamminoethyl methacrylate(CGAD) on bentonite particles was studied by the method of CdI2-starch coloring. The amount of adsorption increased with the increase of time or CGAD concentration, but decreased with the increasing concentration of added NaCl or added hexadecyltrimethylammonium choride (HDTMAC). The amount of adsorption was also found to be dependent on temperature. i.e. decreasing with the increasing temperature. The adsorption heat H was calculated by the relationship of temperature with the amount of adsorption. The X-ray diffraction showed that interlayer adsorption occurred in the bentonite.

This paper mainly elaborated the recent developments of the studies on the new type zeolite molecular sieve host-nanoguest composite materials composing of molecular sieve channels or cages encapsulated nanoscale materials from the point of nanochemistry and material science, and the trends of development in this field. As the research of the properties of this kind of materials are ing on, it is possible that this kind of host-guest nanocomposite materials will be usd in some fields. such as science and high technology fields. as the new type of optical, electrical and magnetic materials in the level of molecular assembly. This paper contains the following contents: hosts and guests; the sizes and shapes of guests; the optical, electrical and magnetic properties of the materials; the syntheses and characterizations of the materials; the applications of the materials and forecast.