摘要
用溶胶 凝胶低温合成非晶态技术,以正硅酸乙脂与γ 缩水甘油醚基丙基三甲氧基硅烷为先驱体,把Eu3+离子掺入到上述体系的溶胶与凝胶中。对获得材料的基本物化性能作了研究。同时对获得材料的荧光特性作了详细的研究,研究结果表明掺杂在有机改良硅酸盐凝胶介质中,Eu3+离子具有较强的发光效应与较宽的发光带,而掺杂在SiO2无机凝胶中的Eu3+离子表现出很弱的发光强度。讨论了材料的成份、结构与荧光增强效应及增宽效应的内在联系。低温合成的上述复合材料表现出较强的机械强度。
Eu3+ ions were incorporated in sol and gel by a solgel processing using 3glycidoxypropltrimethoxysilane (CH2OCHCH2O(CH2)3Si(OCH3)3, GPTMS) and ethyl silicate (TEOS) as precursors. The basic chemicalphysical properties such as DTA curve, FTIR spectra and specific surface area were recorded. The characteristics of their optical spectra were measured and investigated. The results indicate that the emission intensity of Eu3+ ion in ormocer is much higher and the global line width is wider than those in SiO2 gel. The relationship between the composition and structure of gels and the fluorescence intensity and width were discussed and revealed. The obtained ormocer shows good mechanical strength, which can be cut and polished in machine without broken.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第6期552-555,共4页
Journal of the Chinese Society of Rare Earths
基金
宁波市光电子功能材料重点实验室(992392F)
中国科学院激发态物理重点实验室开放基金
宁波大学校基金资助课题(Z0010003)
