Collgen-g-PMMA copolymer and indium oxide nanoparticles were prepared by grafting copolymerization of methyl methacrylate onto collagen and sol-gel process separately, and collagen-g-PMMA/indium oxide nanocomposite was prepared by ultrasonic wave irradiation. Simultaneously two collagen/indium oxide nanocomposites were prepared by liquid-liquid dispersion and ultrasonic wave irradiation respectively in the interest of infrared emissivity investigation (8-14Am). Three nanocomposites were characterized by SEM, TEM, IR spectroscopy, thermogravimetric analysis and infrared emissometer. SEM and TEM indicated that three nanocomposites were of different microstructures, and that collagen-g-PMMA copolymer and indium oxide nanoparticles self-assembled into homogeneously spherical aggregates of 600nm in diameter, which is owing to, we proposed, the high activity of amphiphilic collagen-g-PMMA copolymer nanoparticles. It was found that two nanocomposites showed significantly lower infrared emissivity value than their components, but the rest one did not. Decrease mechanism of infrared emissivity value of nanocomposite was discussed based on microstructure. It was assumed that the decrease in infrared emissivity value of collagen-g-PMMA/indium oxide nanocomposite was attributed to strong interfacial interactions between collagen-g-PMMA and indium oxide.

neration studies were also carried out to select right regenerant and the reuse property of this adsorbent was determined. Experimental results showed that this adsorbent exhibited maximum adsorption capacity of 98.8% at pH of 5-7, contact time for 40min, and dose of 0.2g when used to treat 50ml of Fˉ-containing aqueous solution.

Hybrid nanocomposite films of silica (SiO2) in polyimide (PI) from 4,40-(hexafluoroisopropylidene) diphthalic arhydride (6FDA), 2,2-Bis (3-amino-4-hydroxyphenyl) hexafluoropropane (6FHP) and nonlinear optical (NLO) molecule have been successfully fabricated by an in situ sol-gel process. The silica content in the hybrid films was varied from 0 to 22.5wt%. These nanocomposite films exhibit fair good optical transparency. Fourier transform infrared (FTIR) spectroscopy results confirm the formation of SiO2 particles in PI matrix. Scanning electron microscope (SEM) images show that the SiO2 phase is well dispersed in the polymer matrix. Their glass transition behavior and thermal stability were investigated by differential scanning calorimeter (DSC) and thermal gravimetric analysis (TG).

用甲基丙烯酸甲酯在硝酸铈铵和偶氮二异丁腈的联合引发下对胶原进行接枝共聚改性，并用制得的胶原接枝共聚物颗粒与氧化铟纳米粒子复合制成涂层。研究了接枝反应温度及萃取剂对胶原接枝共聚物及其复合物涂层的红外发射率的影响，同时对复合物涂层红外发射率的降低机理进行了初步探讨。结果表明，在反应温度为50～55℃时，先后用丙酮和水作为萃取剂，可制得粒径为40～80nm的胶原接枝共聚物颗粒，该颗粒与氧化铟纳米粒子复合后，涂层的红外发射率（8～14Lm）较单一的胶原接枝共聚物和氧化铟纳米粒子的红外发射率明显降低，胶原接枝共聚物纳米颗粒和氧化铟纳米粒子之间显示出较强的复合协同效应。

Coordination Chemistry Institute, Nanjing University, Nanjing 210093, People's Republic of China A newA new macrocyclic heterodinuclear FeⅢCoⅢ complex, prepared by the condensation of 2, 6-diformylpyridine N-oxide with 1, 3-diaminopropane in the presence of FeCl2. 4H2O and COCl2. 6H2O, and formulated as FeCoLCl6. C2H5OH. 8H2O, was characterized by elemental analyses, IR and Mössbauer spectra and investigated electrochemically on an ultramicrodisk platinum electrode. The results show that the electrode reaction can be thought as a nearly reversible transfer process. The diffusion coefficient is 1.93x10-6 m2 s-1 and Eo' is-0.229V (versus s. c. e) and α=0.877. The average electron transfer rate constant ko' is 3.21×10-3cms-1.