掺杂卟啉铜的TiO_2/SiO_2有机–无机复合材料制备及其非线性折射率  

Preparation of Cu(Ⅱ)–Tetra(4-Sulfonatophenyl) Porphine Doped TiO_2/SiO_2 Organic–Inorganic Composite and its Nonlinear Refractive Index

作　　者：张晓荷[1] 夏海平[1] 王冬杰[2] 

机构地区：[1]宁波大学光电子功能材料重点实验室,浙江宁波315211 [2]宁波大学材料化学与工程学院,浙江宁波315211

出　　处：《硅酸盐学报》2011年第1期125-129,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(60777030;50972061);浙江省杰出青年自然科学基金(R4100364);宁波市自然科学基金(2009A610007;2010A610185);宁波大学王宽诚幸福基金资助课题

摘　　要：以正硅酸乙酯与钛酸丁酯为前驱体,用溶胶–凝胶法将水溶性的5,10,15,20-四(4-磺酸苯基)卟啉铜(tetra(4-sulfonatophenyl)porphine,TPPS)(Cu(Ⅱ)–TPPS)掺杂到TiO2/SiO2固体介质中,制备了Cu(Ⅱ)–TPPS掺杂TiO2/SiO2有机–无机复合材料。通过分析样品的紫外–可见吸收光谱,研究了Cu(Ⅱ)–TPPS在凝胶基质中的分子状态。结果表明:Cu(Ⅱ)–TPPS在TiO2/SiO2凝胶介质中的最大单体掺杂摩尔分数为10–10。随着Cu(Ⅱ)–TPPS掺杂浓度的进一步提高,在凝胶体系中开始形成Cu(Ⅱ)–TPPS二聚体,且二聚体含量随着凝胶化过程的进行而增多。应用Z扫描技术研究了不同Cu(Ⅱ)–TPPS掺杂浓度的复合材料的非线性光学性质,其三阶非线性折射率达–2.991×10–17 m2/W。The sol–gel inorganic composite was prepared by incorporating Cu（Ⅱ）meso-tetra（4-sulfonatophenyl） porphine（Cu（Ⅱ）– TPPS） into solid TiO2/SiO2using a sol–gel process with ethyl silicate and buthyl titanate as precursors.The states of metalloporphyrin molecules were investiaged by ultraviolet-visible spectra.The doping concentration of Cu（Ⅱ）–TPPS（mole fraction） in monomer can reach 10–10.The dimmers are formed in the composites as the Cu（Ⅱ）–TPPS content increases further,and the dimerization becomes seriously during the xerogel stage.The nonlinear optical properties of samples were investigated by Z-scan technique using Ti：Sapphire femto-second laser pluses as a light source.The nonlinear refactive index,n2 is –2.991 × 10^–17 m^2/W.

关 键 词：非线性光学 有机–无机复合材料 四(4-磺酸苯基)卟啉铜 

分 类 号：TB33[一般工业技术—材料科学与工程] O437.5[机械工程—光学工程]