【摘要】 实现酞菁材料化进而器件化的一个重要途径是将其引入到固相基质制备酞菁掺杂的复合材料。文章以邻苯二腈和可溶性镍盐为反应试剂,通过一定温度的热处理,采用原位合成技术在二氧化硅凝胶玻璃基质中原位合成镍酞菁,制备了复合凝胶玻璃材料,并用紫外-可见吸收光谱表征了其制备过程。由于镍酞菁在可见光区域有明显吸收,以镍酞菁物理掺杂的复合凝胶玻璃作为参照,用670 nm处的吸光度来计算原位合成镍酞菁的量。研究了原位合成动力学,拟合出原位合成NiPc的量与加热时间的关系曲线。拟合曲线呈"S"形,与Avrami-Erofeev公式相符。由此推导出在180,185,190,195和200℃时的反应级数分别是4.5,4.5,3.7,3.2,1.9。更多还原

【Abstract】 In decades,metallo-phthalocyanines(MPcs) have undergone a renaissance because of their singular and unconventional physical properties.However,for the successful application of MPcs in practical devices, it is important to disperse MPc molecules into solid state matrix to fabricate MPc doped composite with desired properties.Inorganic glass is an ideal matrix because of its transparency and high environmental stability.One attractive approach to fabricating MPc/inorganic composite is sol-gel technique.In the present paper,silica gel glass matrix was prepared by hydrolysis and poly-condensation of tetraethyloxysilane.1,2-dicyanobenzene and analytically pure soluble nickle salt were used as the nickle phthalocyanine(NiPc) reactants and chemical synthesis technique was used to prepare NiPc doped sol-gel materials at several temperatures.During the heat treatment,four 1,2-dicyanobenzene molecules and one nickle ion collide to form a NiPc molecule.In-situ synthesizing process of NiPc in the pores of silica gel glass matrix was traced by UV/Vis absorption spectra.Owing to the remarkable absorption band of NiPc in visible region,quantity of in-situ synthesized NiPc was calculated by the absorbance at certain wavelength of 670 nm,using composites with physically doped NiPc as a reference.The in-situ synthesized kinetics was studied in detail and found to be consistent with Avrami-Erofeev equation.The reaction grades were deduced to be 4.5,4.5,3.7,3.2 and 1.9 respectively at temperatures of 180 ℃,185 ℃,190 ℃,195 ℃ and 200 ℃,respectively.更多还原