The effect of the addition of sodium dodecyl sulfate (SDS ) upon the behavior of the F127 triblock copolymer solution has been studied in this work. The Process of F127 micelle formation in the copolymer solution with different concentration of SDS was monitored by fluorescence probe method. The gelation process of concentrated copolymer solution with different concentration of SDS was also measured. The results indicated that with increasing of SDS concentration in F127 solution, the process of micelle formation was inhibited and the structure formed became looser than that with no SDS added. For the concentrated solution of F127, if the molar ratio of SDS/F127 was less than 2 the system was gellable easily. But if the molar ratio was more than 2, the gelation process of solution was difficult to realize and it was impossible to form gel when the molar ratio was bigger than 5.

Superconducting Gd-Ba-Cu-O films with varying Tc were studied by using XPS quantitative analysis, XPS angular distribution, XPS imaging and ion etching. The results show that the surface layer of all films is Ba enriched and lacking in Gd. The elemental distribution on surface is inhomogeneous. The surface and the deep region of the films are contaminated by C-containing compounds. As compared with the sample with Tc≥87K, the sample with Tc＜77K has the highest atomic concentration of Ba(HBE) and O(HBE) corresponding to non-superconducting phase on the surface. In the deep region (20-30 nm) of sample with Tc＜77K, the chemical composition is still nonstoichiometry. The contamination of C-containing compounds in both the surface and the deep region is more serious for the sample with Tc＜77K than the samples with Tc≥87K.

A fractal surface was generated on computer by random addition method. The simulated measurement on this surface shows that z resolution has little effect on calculating fractal dimension D while the lower x y resolution causes larger statistic error. D was calculated for Au films on three kind of substfate using data from Scanning Tunneling Microscope(STM) images. D = 2. 15 for Au/ceramic, and D = 2. 06 for Au/optical glass. D has different values for different points on Au/general glass, the reason of mismatch between curves from STM images of different scan sizes was also discussed.

The difference of polysoap hydrogels and normal polyelectrolyte hydrogels is that the former possess hydrophobic side chains. Poly(diallylamie-N， N’-dodecylmethyldiallylammonium bromide ) (PDA-C12 ), Poly (N-methyldiallylamine-N, N’-dodecylmethyldiallylammonium bromide )(PMDA-C12) and stearic acid modified poly (tetraethylenepentamine-epichlorohydrin) (PTE- C18)contain hydrophobic side chains with 12 carbon and 18 carbon, respectively. The stimuli-response of the gels under electric fields was investigated. Under contact electric fields, the deswelling was observed in the anode side of the gels. Under non-contact electric fields, the gels bend toward the anode. The gels can turn back original sharps and bent toward the cathode with time when higher voltage was applied. These properties of the gels are related to both the change of osmotic pressure caused by mobile ions and hydrophobic interaction.

 The binding of three stereoisomers of cyclocantharidatoplatin, RS, RR and SS, with calf thymus DNA was investigated by ITC, DSC, CD and NMR methods. The enthalpy changes for the binding of three stereoisomers of cyclocantharidatoplatin with DNA are - 1. 1 (RS ), - 7.2 (RR) and 16 (SS) kJ•mol - 1 at 298. 15K, respectively. In the presence of three stereoisomers of cyclocantharidatoplatin, the melting temperatures of DNA are 346. 72(RS),350. 82(RR) and 351. 69 K(SS), respectively, compared with the melting temperature 343. 16 K of DNA. The CD spectra of the DNA binding with three stereoisomers of cyclocantharidatoplatin at room temperature show a small difference of molar ellipticity between them and that of DNA. Comparing the 1H-NMR spectra of SS -cyclocantharidatoplatin in the presence of DNA with that in the absence of DNA at room temperature, there is no distinct difference between them. On the basis of the above experimental results, the binding model of cyclocantharatoplatin with DNA has been discussed.

Zr0. 9Ti0. 1 (Ni0.57V0.1Mn0. 28Co0. 05 )2.1 alloy was prepared by melt-spinning and ball-milled with Co3Mo additive to improve its kinetic characteristics. It was shown that after 2 h milling the alloy exhibited a much improved activation performance as well as electrochemical capacity. Electrochemical impedance experiments also showed that ball-milling of the alloy with Co3Mo could improve the surface activity to a great extent. This can be attributed to the catalytic effect of Co3Mo, which had a much closer contact with the alloy powder after ball-milling, on hydrogen oxidation. However, long time milling could decrease the capacity gradually due to the further amorphization of the alloy. The experimental results also showed that the alloy ball-milled with electrochemically catalytic material such as Co3Mo exhibited a better activity than those milled without any additives or with a metal powder such as Cu acting only as a conductor.

Valence stability and change of Eu(Ⅱ) in oxides have been studied by luminescence spectra. The results show that the valence stability and change of Eu(Ⅱ)in oxides is closely related to the radius and electric charge of positive ions substituted by Eu(Ⅱ) and crystal structure of the host such as Al2O3 which can form α-Al2O3 single phase and α-Al2O3 and γ-Al2O3 mixed phases under different reaction temperatures. A fairly od explanation is made by the proposed relation between energy coefficient and crystal structure for the first time to the observed experiment results. If the energy coefficients of substitution ions is more than that of Eu(Ⅱ), the lattice substitution of Eu(Ⅱ)for these ions is not occured generally and valence state of Eu (Ⅱ)is not stable and be easily changed into Eu(Ⅲ). The lattice of γ-Al2O3 can stablize the valence state of Eu(Ⅱ)within certain coped concentration and in α-Al2O3 crystal lattice Eu (Ⅱ)can be easily changed into Eu (Ⅲ).

The mechanism and Kinetics for the decomposition of pyruvic acid and benzoylformic acid have been studied by using the ab initio RHF/6-31G method. The calculated activation barriers of the two reactions are 186.01 kJ•mol-1 and 169.30 kJ•mol-1 which are in reasonable agreement with the experimental data. The calculated results show that the decomposition of the two reactions is a concerted process with hydrogen transferring and bond breaking via a five-membered cyclic transition state. The thermal rate constants of the two reaction are obtained by calculating microcanonical propability fluxes through transition state, Which are fairly accurate by comparison with the experimental results.

The selective preparation of C2H2 in discrete rovibrational states of v"2 mode in its electronic ground state (x1Σ+g, v"2 = 1, J") is achieved by stimulated Raman pumping. The optical AC Stark effect and orientation have been observed from the UV laser induced fluorescence signalA1 Au (v'3 = 1, J, ) -X1Σ+ (v", = 1, J") using different polarizations of Raman pumping and probing lasers. The calculated Raman line-shapes based on the Stark profile broadening numerical model agree well with the experimentally measured profiles.

The accurate radial expectation values are important for the study of atom and molecular properties. In this paper, a STO set calculated by Roothaan-Hataee-Fork method was used to design systematically the data base of the radial expectation values of the ground neutral atoms and their orbits (Z=2-54). The values are in well agreement with the results calculated with other methods.

 Based on amino acid addition model, a set of hydrophobicity contributions of amino acids was obtained from the multivariate linear regression analysis of peptides' octanol/water partition coefficients. Multivariate regression was performed on a training set of 219 peptides including dipeptides to pentapeptides which we compose 21 natural amino acids. The correlation coefficients for the whole set fitting are 0. 978 and 0- 974, for log P and log D respectively. In addition, a new test method -evolution test-for regression analysis was discussed. The result of evolution test for amino acid addition model shows the advantage of this new test method.

 By calculating commercial silica at 1500℃ or adding sodium oxalate and calcinating at 850℃, α-cristobalite was obtained. The Raman and IR spectra of amorphous silica and α-cristobalite were studied. The Raman and IR spectra showed obvious changes. While amorphous silica transformed to α-cristobalite. The peak positions and peak shape changed, and new vibration mode appeared in the crystal phase. For amorphous silica, the Raman spectrum has a broad band between 210-515 cm- 1 and two weak peaks at 793 and 966 cm -1. After phase transition, the broad band split into two strong peaks at 416 and 231 cm-1, and the positions of weak peaks changed. The IR spectrum of SiO2 has two strong peaks at about 1100 and 480 cm-1 and a weak peak at 800 cm-1. For α-cristobalite, a strong new peak appeared at 620 cm-1, and the adsorption at 800 cm-1 increased considerably. α-cristobalite also has two adsorption peaks in far-infrared.

Changes of the surface adhesion forces during the formation of octadecyltrichlorosilane (OTS) self assembled monolayer on glass substrate surface was investigated by Atomic Force Microscope (AFM). The research showed that as the reaction proceeded, the hydrophobicities and the adhesion forces of the sample surfaces increased gradually. After 15 min reaction, the glass surface was completely hydrophobic with an advancing contact angle of 105° and an interfacial energy of 55. 79 mJ•m-2.

The behavior of catalytic reduction of oxygen on modified electrodes of three types are studied using cyclic voltammetry in an acidic solution. The first electrode modified with industrial dyestuff Direct Light Turquoise GL(denoted as GL) has notable catalytic activity, two reduction peaks of O2 appear on CV curve (Ep is - 0. 25 V and - 0. 40 V respectively), but its stability is poor The second electrode modified with poly(4-vinyl-pyridine) and GL shows quite od catalytic performance. Both activity and stability are much better than those of the first electrode, ip in the CV curve equals 200% of that of the lst electrode and the Ev for the first peak has shifted positively about 0. 05 V. The catalytic performance of the third electrode modified with Nafion and GL is a little bid better than that of the first electrode, but is much worse than that of the second electrode. The reason of differences in the catalytic performances of these electrodes are discussed.

Population correlation function P(t) has been used to examine the mechanism of breakage and coalescence of clusters at steady-state under shear, the results are in qualitative agreement with experiments. The research indicates that with a weak potential the mechanism of breakage and coalescence of clusters at steady-state under shear is predominately controlled by the particle-particle model, but that with a strong potential the mechanism shifts to that of cluster-cluster for large clusters; for small clusters, however, the mechanism of particle-particle model seems still to remain predominate, further work needs to be done.

Influence of the interlayer interactions on aggregates in Y-type Langmuir-Blodgett multilayers was investigated by using steady-state and time-resolved fluorescence techniques. As the interlayer interactions was screened by arachidic acid layers, intralayer interaction of hemicyanine molecules caused formation of H-aggregates and a blue shift of the fluorescence band in interleaving hemicyanine/arachidic acid multilayers. In pure Y-type hemicyanine multilayers, however, the molecules mainly formed J-aggregates leading to a significant red shift of fluorescence band and a larger scale of aggregates due to the stronger interlayer interactions.

Applying the Au/PATP/Au nanoparticles sandwich structure as the model system, a semi-quantitative study on the SERS intensity with the size of Au nanoparticles has been performed. It shows that the SERS intensity increases with the size of Au nanoparticles from 15. 7nm to 66.0nm. The above trend agrees with the calculated value by Schatz, while the SERS enhancement factor is 2-3 orders of the calculated value.