摘要
采用溶胶-凝胶法以正硅酸乙酯(TEOS)和正辛基三乙氧基硅烷(Octyl-triEOS)为共先驱体制备了掺杂二氯化二联吡啶(二吡啶并[3,2-a:2′,3′-c]吩嗪)合钌(Ru-Dppz)的干凝胶。考察了Ru-Dppz在乙醇溶液和干凝胶内的荧光行为,发现在干凝胶中配合物的发射光谱较乙醇溶液中有明显蓝移。与固态本体配合物相比,干凝胶内Ru-Dppz的荧光寿命有明显增加。以Ru-Dppz为荧光指示剂的有机改性氧传感材料具有灵敏度高、响应时间短及稳定性好等优点。该复合材料中有机改性剂的加入提高了氧的通透性,降低了发光分子间的浓度自猝灭进而改善了材料传感的灵敏度。
An oxygen sensing material using tetramethoxysilane （TEOS） and n-octyhriethoxysilane （OctyltriEOS） as precursors and doped with bis （2,2＇-bipyridine） （ dipyrido [ 3,3-a ：2＇,3＇-c ] phenazine-N^4 N^5 ） ruthenium（Ⅱ） （Ru-Dppz） was prepared by the sol-gel method. The fluorescent behaviors of the complex in ethanol and xerogel were investigated. As a result, the emission band of the composite material attributed to the transition from the metal-to-ligand charge transfer （MLCT） shows blue shift compared with that in ethanol. The lifetime of the complex in xerogel was increased compared with that of the pure solid complex. The sensing material with Ru-Dppz as indicator demonstrated good Stern-Volmer plot, high sensitivity, fast response time and long-term stability. The sensitivity was improved using an organically modified silicate （ormosil） as a matrix.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2007年第3期345-348,共4页
Chinese Journal of Luminescence
基金
国家自然科学基金(20171011
20571071)
中国科学院"百人计划"基金资助项目
