The effect of CO2 on catalytic activity for CO oxidation on Cu-Ce-O fluorite-type complex oxides has been investigated. CO2 played an inhibiting role in CO oxidation on the catalyst similar to what happened on CeO2. As CO2 was introduced into the feed, the coliversion of CO to CO2 on the catalyst was reduced a little. At room temperature, the catalyst could easily adsorb CO2 in large amounts from the air to form carbonate on its surface, as well as from the yields at low reaction temperature As a result, the catalyst could be poisoned by CO2 tentatively .The catalytic activity could be recovered to its initial value on being heated at 300 ℃ or higher temperature. Cu-Ce-O catalyst showed high activity with CO conversion over 98% after being pretreated to desorb CO2 previously.

In the present paper it is reported that glycolipid was successfully inserted into colorchangeable TCDA/DGG and PCDA/DGG polydiacetylene vesicles based on physical force rather than covalent binding. And the effects on polyinerization of diacetylene and the change of the polymer vesicles' color due to the relative quantity of glycolipid versus diacctylene molecules were also reported. The experimental results demonstrated that this approach is available and the colorchangeable property of such polydiacetylenic vesicles was not affected due to the inceorporation of glycolipid. This provided a simple and useful method of functonalizing the polymer vesicles for their wide applications.

 GaP nanocrystals were synthesized by high temperature high pressure beuzene thermal synthesis method, the samples were charartrized by X-ray diffraction, optical absorption and transmission election microscope. The results showed that GaP nanocrystals were metastable under benzene thermal conditions. The relationship between the size distribution and the synthesis conditions was also investigated in this paper.

The Phenomenon of two diluite aqueous phases coexisting in mixed aqueous solutions of carboxylates and alkyl pyrridmmin salts were investigated This phenomenon occurs in limit range of composition of system: limited carbon nuuber in hydrophobic groups of surfactants: limited miolar ratio of cationic and anionic surfactants; and limited concentration of surfactants. The coexistent two phases contain large amount of water , more than 95% in-both The upper phases are richer in surfactants being more than twenty fold of the concentration in lower phase Vesicular structure exists in upper and lower Phases, which are aggregated in upper phases and dispersed in the lower. The molecular ratio of cationics and maniocs is more close to 1 in upper phase than that in lower phase. The concentration of inorganic ions is almost the same in both phases.

 Alkali metal enolates CH2=CH(OM) (M=Li,Na,K,Rb,Cs) has been studied at available RHF/3-21G, RHF/3-21G, RHF/6-31+G. MP2/6-31+G. RHF/lan12dz and MP2/lan12dz and MP2/lan12dz levels of theory. The results indicate that all of them have planar structure 1 and nonplanar structure 2.The geometrical parameters, the results of NPA and the reaction heats all reveal that the attachment of alkali metals remarkbly restrict the resonance of enol anion.

The optical properties of corona poled 4'-N,N-dimethylamino-mtrostilbene (DANS) and a newly synthesized α'-cyano-4'-mtro-4-N.N-dimethylaminostilbene (CNDS) doped poly(methyl methacrylate) (PMMA) films were investigated with in situ second-harmonic generation (SHG) measurement and absorption measurement. Optimum corona poling temperatures of these polymer films were found lower than glass transition temperatures of the materials, most probably due to the dramatically increased conductivity of the films and phase separation. Under the optimum corona poling condition, the alignment ordering of CNDS was lower than that of DANS from the absorbance before and after corona poling. But the second-order nonlinear susceptibility X(2) of CNDS/PMMA is improved compared with that of DANS/PMMA. The molecular second-order polarizability β of the CNDS/PMMA was estimated to be about 140×10-30 esu from the measured absorbance and X(2). The relaxation of SHG intensity of CNDS/PMMA was slower than that of DANS/PMMA. This showed that CNDS is a kind of better dopant than DANS as second -order nonlinear-optical materials.

The parameters of solvent polarity (π) and hydrogen bond donor ability(α) of a series of different hydrophobically modified poly (N-isopropylacrylamides)(PNIPAM ) micelles have been studied using the Kamlet-Taft solvatochrom comparson method,on the basis of the determination of the relationship between two probe s maximum wavenumber in fluorescence spectrum and solviatochromic parameters of different solvents. Results show that, at the same molar feed ratio ,the micellar environments of solubilized probe molecules become more nonpolar and have much stronger hydrogen bond donating ability with the increase of the alkyl length of acrylic ester in the copolymers. While for copolymer of N-isopropylacrylamides and octadecyl acrylate (NIPAM-C18).on increasing the molar feed ratio of ODA, the polarity of the micellar environments have the same rule as the above, however, their have no obvious rule. A preliminary discussion about these phenomena has been given.

Carbonaceous materials based upon melamine resin and doped with phosphorous were obtained by heat-treatment and were analyzed by elemental analysis, XPS and XRD. The results showed that the addition of phosphoric acid did not affect severely the content of nitrogen, but greatly affected the relative content of graphene nitrogen. The addition favors the increase of reversible lithium capacity. The addition of phosphoric acid resulted in a decrease of carbonization degree at lower temperature (600 ℃) and no much changes at higher temperature (800 ℃). The phosphorous added was dispersed homogeneously in the carbon materials and bonded not only with oxygen atom but also with the carbon structure, and the later bond was strengthened at higher temperature. All these factors lead to the changes of reversible capacity. At lower temperature,the reversible capacity below 0.9 V decreased with the amount of added phosphoric acid, while at higher temperature, the reversible capacity above 0.9 V increased. The reversible capacity of the carbon obtained in this work can reach 516 mA•h•g-1.

 The optimized geometry, harmonic force field and infrared intensities of FOSO2F were calculated at ab initio HF/SCF level with 6-31G basis set. The theoretical force field was scaled using the scaled quantum mechanical method of Pulay. The average deviation between the experimental and computed frequencies was 6.3 cm-1. The assignment of the fundamentals for this molecule was also performed according to the potential energy distribution and the ab initio IR intensities.

The energies and structures of (SiO2)n clusters bound by a reliable empirical potential function have been studied A genetic al rithm has been used to search for the global minima on the empirical potential surface. The dependence of energy and structure of (SiO2 )n clusters on cluster size has been analysized and discussed, the results slow that no magic numbers in (SiO2)n clusters obviously exist, and, in the range of n≤20, there are no evidence for (SiO2)n to show the structural characters of the corresponding bulk materials.

The system Al2O3-B2O3-Eu2O3, with Al/B ratio varying from 4.5 to 2 and Eu/(Al+B)=0.02, was synthesized by solid state reaction. The vibrational spectra of the sys tem Al2O3-B2O3 were investigated. It was found that no definite change in the regions of 12001000cm-1 due to the absorption BO4 groups with decreasing Al/B ratio, indicating no Al3+ion was substituted by Eu3+ ions and other changs revealed that there was an amorphous phase and Eu3+ ions may dope into the amorphous phase. The studies on the luminescent properties of the system Al2O3-B2O3 also show that Eu3+ ions dope into amorphous phase. The investigations on the phonon sideband of Eu3+ indicate that electron-phonon coupling strength decreases with Al/B ratio change from 3 to 2, leading to the non-radiative decay rate decreases and the Eu3+ennssion intensity increase.

 Photoionization and photodissociation of ethylene oxide are performed by using a time-of-flight mass spectrometer(TOF-MS) with vacuum ultraviolet(VUV) photons from Hefei synchrotron radiation source. The photoionization mass spectrum and the photoionization ef ficiency(PIE) curves of the fragment ions are measured. The appearance potentials of all the observed ions are obtained from then PIE curves. From these data, the formation enthalpies of some chief ions have been evaluated Possible channels and their competition of dissociative photoionization of ethylene oxide have been discussed.

Chemical reactions of cluster ions of transition-metals (Fe2+ Co2+ Ni2+) with CO were studied by using an ion trap affixed with a laser ablation source. The experiments indicate that Co2+ is more reactive than Fe2+ and Ni2+ when they react with CO molecule, and the reaction rates are independent on CO pressure. The results are in agreement with the theoretical simulation and the previous data.

The kinetic studies on the axial coordination reaction of Co(Ⅱ)-2,9,16,23-tetracaboxyphthalocyamine with 2-mercaptoethanol in aqueous solution were studied by stopped flow method. A general mechanism was proposed and the kinetic parameters were obtained by non-liner and liner least-squares program. The effects of temperature and pH on the reaction were investigated in this paper.

A method for the effective generation of high steady state concentration of semiquinone radicals was established in laccase/O2 system by using ESR-spin stable technique in static condition. The result of ESR demonstrated that the laccase-catalyzed reaction of these substrates underwent the stage of semiquinones.

The effect of concentration of Vitamin B1 on the B-Z oscillating reaction, the use of the analysis and the possible mechanism have been studied. Experiment indicated that Vit B1 has an effect on the shape, amplitude and period of the B-Z oscillating wave. The best reaction condition and the reactant's concentrations are reported. The results showed linear relationship between the changes in the oscillation period and amplitude of the chemical system with the concentration of Vit B1 in the range of 5.10×10-6 2.78×10-4 mol L-1.and the related coefficients are 0.995 and 0.093. The possible mechanism of this reaction has been studied in detail.

The thermal properties of porcine brain tubulin polymerization and denaturation and the effects of taxol were studied from 4 ℃ to 115 ℃ with a new highly-sensitive differential scanning calorimeter (Micro DSC Ⅲ, Setaram, France). The DSC results indicated that microtubule polymerization can proceed uia an endothermic process and that taxol could alter the process. A large aggregation peak was found at about 85 ℃ in the course of the denaturation and it disappeared with adding taxol. The heat flow oscillation was observed during the controlled-temperature experiments and taxol could stabilize the structure of the microtubules so that the oscillation disappeared.

 PM3 SCF calculations have been carried out to study the thermolyses of o-acetylcycolpentanone and o-acetylcyclohexanone. The results obtained show that these two com-pounds are thermally decomposed into products through an unimolecular elimination involving six-center cyclic transition state, and these two thermolyses are caused by the migration of positive charged β-H.