This Paper describes an experimental method that established a local Pt/Nafion interface on the Platinum Plane, so that the boundary conditions and the initial condition of the (diffusion equation about the diffusion of adsorbed hydrogen atom the platinum plane can be controlled. The average diffusion coefficient of underpotential deposition of hydrogen on a surface of platinum was obained for the first time and D=1.50 ×10-4cm2•s-1.The accuracy of the datum was discussed.

ld nanoparticles were assembled on ld substrates with the self-assembled monolayer(SAM) of p-minothiophenol(PATP). AFM measurements disclose that ld nanoparticles are scattered over the surface of the substrate with a submonolayer coverage. The Raman signal of the coupling layer, the SAM of PATP, can be well observed. Potential-dependent measurements were performed to study the chemical enhancement in SERS of such a system. Based on the supposition that the direction of charge transfer is from ld nanoparticles to PATP, it is deduced that Herzberg-Teller contribution has ruled in the SERS of such a system.

The binding energy spectra and momentum profiles for the valence shells of ethane have been measured by using multichannel EMS spectrometer. The results are compared with the available experimental and theoretical results. The present result of the experimental momentum profile of 3a1g has an obvious minimum as predicted by the theoretical calculations.

The structure and electron properties of 8 bis(5-substituent-2,3,3-trimethylindolen-2-ylidene)squaraines in ground state and singlet state were studied by AMI calculation. The (+)(-) sparkles were introduced in order to simulate the solvent interaction. The absorption maximum value was estimated by AMI-CI, and the results were close to the experimental values. The substituent effect on the absorption was discussed by comparing the difference of atomic charge densities between the and s1 states. Redox Potential in cyclic voltammetry exhibited two revevsible oxidation potentials, they are increased as the 5-substituent electron-donating ability. A od linear relationship was found between the first oxidation potential and the calculated ionization potential, and between the corrected experiment and values and calculated values of electron affinity.

Conducting polyaniline (PAn) is synthesized in the SIS (Styrene-isoprene-styrene)matrix by the in--sift polymerization to form an uniformly mixed SIS--PAn conductive rubber membrane with the back (in contact with the glass) being conductive while the upside one being insulating thereof. The surface resistance and the conductivity of the conductive composite membrane are of 300Ω／□ and 0.07 S•cm－1, respectively, while the content of PAn in the membrane is only of 5.8% (or the feeding ratio of An/SIS is of 0.2). The effect of the preparation conditions including the content of PAn, acid, oxidant, surfactant and cross-linker, as well as the mold material on conductive properties of SIS/PAn membrane are analyzed.

The properties of the vesicles from triethanolamine dilaurate (ZRNC_2) which possesses the characteristics of both nonionic and ionic surfactants in the diluted solution of hydrochloric acid have been studied. It, is shown that the vesicles are not formed until the PH value of the solution is lower than 4.2, the vesicle the aqueous solution with and without NaCl has the best stability within pH=23 range These phenomena are due to the partial transformation of2RNC2 into chloride salt of triethanolamine dilaurate.

Infrared spectra of 1,2-ethanediol, 1,2-propanediol, 1,4- butanediol and 1,6-hexanediol in CCl_4 were determined in the presence of an aprotic solvent B. The cooperative effects of intraand intermolecular hydrogen bonds for the diols were quantitatively discussed by analyzing these IR spectra. The results indicated that the formation of intramolecular hydrogen bonds in diols had definitely strengthened the intermolecular hydrogen bonds of the naked OH groups with basic solvents, in addition, for 1,2-ethanediol and 1,2-Propanediol the formation constants of the diol intramolecular associates and those of intermolecular associates between diol intramolecular species and B were also estimated. Compared with the inter molecular formation constants of the correspondent monoalkanols with B, K_B of diols were much higher. The fact also showed that the intramolecular hydrogen bonds polarize the naked hydroxy group, strengthening the O-H…B hydrogen bonds.

So far in the sensitization research of semiconductor nanoparticles, the outstanding sensitizing system is nanocrystalline TiO2 films sensitized by Ru-bipyridle complxes. In this Paper, we have investigated the electron injection and electron-hole recombination dynamics of two systems sensitized by [3, 3'-(LL)]2 Ru(NCS)2 and [4,4'-(LL)]2Ru(NCS)2. A simple and effective model for calculation has also been presented. Through calculation and fitting, it, is shown that the electron injection is completed within 50 fs for both systems. We have also performed photocurrent spectra measurement. The result indicters that the charge injection efficiency is a major limit factor to incident-photon-to-current efficiency(IPCE). The research is meaningful for sunlight-electricity conversion and solar cells fabrication.

Samples of La-Ce-Cu series were prepared with ammonium nitrate (NH_4NO_3) comelted method and the compositions of the samples were analyzed by XRD, XRF results showed that all the samples were O-defect compounds. The superficial structure were characterized by TEM. It was found that Cu segregates towards the surface and forms a new compound with S with the deepening of SO2 poisoning which causes the distortion of the original crystal structure. It, also showed that pure CeO2 will not be poisoned by sulphur. XPS analysis showed that after poisoning reaction Cu seperates from La2CuO4 and combines with S to form CuSO4. Correspondingly CeO2 participates in the poisoning reaction and forms Ce2O3, i.e.La2CuO4 + 2CeO2 + SO2 = CuSO4 + La2O3 + Ce2O3.

 The method of doping the trivalent, canon into copper-based catalyst for methanol synthesis is effective in enhancing catalytic activity. The form of chromium in the catalyst and the nature of promotion effect as well as its relation to catalytic activity after doping Cr2O3 into Cu-ZnO-Al2O3 has been studied by XRD, ESR,TPR and the determination of catalytic activity. The results showed that chromium exists in the ZnO lattice as both Cr3+ and ZnCr2O4. Catalytic activity of Cu-ZnO-Al2O3-Cr2O3 catalyst for methanol synthesis and ESR intensity of the monovalent defect induced by dissolving Cr3+ into ZnO lattice as well as other ESR, species in catalyst are well interrelated. The catalyst containing one per cent of Cr3+(atomic ratio) has the highest catalytic activity.

The TOF-mass spectra of CS2+、CS+、 and C+ ions were obtained by the method of REMPI. The mechanism of the production of these ions was discussed according to the mass spectra. The structures observed from the mass spectrum were assigned.

The isomerization of singlet, nitryl hydride (HNO2) has been studied by using ab initio method at MP2 level with 6-31G* basis set. The calculation indicates that the reaction is exothermic by 10.8kJ.mol-1, the energy barrier is 227.9kJ•mol-1, and nitryl hydride is not easily isomerized to trans-HONO.

Changes of the behavior of the thermotropic phase transitions of the phospholipid DHPC by the action of miniprotein gramicidin D (G.D) have been studied by differential scanning calorimetry. The experimental results demonstrated that G.D could not remove the pretransition of DHPC, but the pretransition peak and the main transition peak of DHPC were incorporated into a broad peak. The pretransition temperature and the main transition temperature of DHPC decreased to different ex-tent. The sums of the pretransition and main transition enthalpies of DHPC showed a lineally decreasing relationship with increasing the mole fraction x_g of gramicidin D.

Two kinds of modified coumarin derivatives with another intramolecular conjugated charge transfer moiety have been synthesized in this work. The photophysical behavior of these compounds in solvents with different polarity and viscosity were studied. Much low and wide span of spectral range of these compounds are due to the existence of the flexible non-symmetrical stilbene structure and low intramolecular charge transfer ability.

 The geometries of bis(4-dimethylaminophenyl)squaraine and its N and C-2 derivatives have been obtained by AMl and Gaussian 92.The relationship between their photosensitivties and geometries has been studied respectively. The linear relationships between oxidation Potential (EOX) of compounds 1-6 and their HOMO energy (EH), between the Photosensitivity (lgE0.5) of compound 1-5 and ΔET- X (the difference of the oxidation potential of charge-transporting material (CTM) and charge-generating material (CGM)), between lgE0.5 and ΔET-G (the difference of the HOMO energy of CGM and CTM) have been studied respectively by the least square fitting method. The result indicates that Eox and EH exhibit certain linearity (r=0.883), the correlation coefficient of lgE0.5 and ΔET-G (r=0.980) is greater than that of lgE0.5 and ET- X (r=0.883). It is concluded that the method of calculating the HOMO energy is better than that of detecting the oxidation potential during the study of QSAR of bis(4-dimethylaminophenyl)and its C-2 derivatives. According to the linear relationship obtained by AM1,bis(4-dimethylamino-2,6-fluorophenyl)squaraine has od photosensitivty.

Surface enhanced Raman spectroscopy (SERS)has been used to study the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid ,sulphuric acid and perchloric acid respectively or any two of them. It was found that these different anions can be induce-coadsorbed simultaneously on the silver surface through the protonated amino group of TU in the mixed acids system. The coadsorption ability of the anions are in the order of SO42->NO3->CLO4- at the potentials of ≥-0.6V or CLO4- >NO3-> SO42- at the potentials of ≤-0.8V. The stability of TU on the surface of Ag electrode depends not only on the electrode potential but also on the nature of electrolyte anions coadsopbed.

Exchange enthalpies of aluminum with Na-montmorillonite suspension are determined at 3O3.15K and PH=3, and 4, using titration calorimetry and the exchange reaction mechanism are further studied by combining calorimetric results and exchange isotherm determined by static method. The adsorption of aluminum on Na-montmorillonite is endothermic, and therefore exchange reaction is a process driven by entropy. X-ray diffraction patterns of montmorillonite saturated by Na+ and Al3+ are determined at wet and dry state respectively. The results show Al3+ adsorbed on the clay can dramatically reduce the expansion of montmorillonite because Al3+prevents osmotic swelling.

The electronic structure of methane has been studied in detail by the high performance energy multichannel electron momentum spectrometer developed recently. The accurate electron momentum distributions of the It_2 and 2a_1 valence orbitals of methane are measured. Excellent agreement can be found between the experimental data and the calculations using the Hartree-Fock method and CI method with the 146-GTO basis functions. In the inner valence region clearly satellite structures of the 2a1 orbita1 are observed. The experimental binding energies and pole strengths are compared with the result, of 2ph-TDA Green function's calculation. EMS measurements and the 2ph-IDA calculation can give The consistent values of binding energies, while the 2ph-TDA calculation is found to overestimate the maim peak intensity of 2a1 orbital and underestimate the intensity of satallite structures.