二氧化硅凝胶玻璃基质中原位合成镍酞菁的动力学研究

doi:10.3964/j.issn.1000-0593(2009)01-0207-04

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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.

Key words：Nickle phthalocyanine;In situ synthesis;Silica gel glass matrix;UV/Vis absorption spectra;Kinetics

Received: 2007-08-28 Accepted: 2007-12-06

ZTFLH:

TQ17

Corresponding Authors: ZHAN Hong-bing E-mail: hbzhan@fzu.edu.cn

Cite this article:

HUANG Juan,ZHENG Chan,FENG Miao, et al. Kinetic Study on the In Situ Synthesis of Nickle Phthalocyanine in Silica Gel Glass Matrix by UV/Vis Absorption Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(01): 207-210.

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https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2009)01-0207-04 OR https://www.gpxygpfx.com/EN/Y2009/V29/I01/207

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