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作 者:潘春阳[1] 麦海登[1] 卢静[1] 李大光[1] 杨红梅[1] 赵丰华[1] 郑颖琳
出 处:《硅酸盐通报》2013年第12期2417-2420,共4页Bulletin of the Chinese Ceramic Society
基 金:国家自然科学基金(51002034);中国博士后科学基金资助项目(2012M521572)
摘 要:以二甲胺和硼酸为原料,通过水热反应合成有机模板硼酸盐[C2H8N][B5O6(OH)4],通过单晶X射线衍射对其晶体结构进行分析,该晶体属于单斜晶系,空间群为C2/c,晶胞参数为a=1.3381(75)nm,b=1.1468(56)nm,c=1.7137(92)nm,α=90.032(64)°,β=112.292(82)°,γ=89.988(85)°,V=2.433(2.000)nm3。粉末衍射(PXRD),红外(IR),热重(TGA)以及荧光(PL)等手段对其晶体进行分析表征。在不同温度下对该物质进行热处理,观察其IR和PXRD的变化判断其内部的结构是否能够保持稳定,并通过热重分析进行补充说明。荧光光谱结果表明在经过不同温度热处理后,该物质的发光特性发生明显的变化。实验证实[C2H8N][B5O6(OH)4]一种可能用在白光LED上的荧光粉。An organic templated borate [ C2H8N ] [ B5O6 ( OH )4 ] has been synthesized under hydrothermal conditions by reaction of dimethylamine and boric acid. It was characterized by single-crystal X-ray diffraction, Fourier transform infrared spectroscopy (FrIR), thermal gravity analysis (TGA) and photoluminescence (PL) spectroscopy. The single crystal X-ray diffraction reveals that [ C2H8N ] [ B5O6 (OH)4 ] crystallizes in the monoclinic system, space group C2/c, a = 1. 3381 (75) nm, b = 1. 1468(56) nm,c = 1. 7137(92) nm,α = 90. 032(64) ° ,β = 112.292(82) ° ,γ = 89.988(85)°, V = 2. 433 (2. 000) nm^3. The sample was heated under different temperatures, and the heating-treatment samples were characterized by PXRD, FTIR and TGA to explore its structure stabilities. Photoluminescence of the samples can be modified by means of a simple heat-treatment process. The result confirmed that [ C2H8 N ] [ B5 O6 (OH)4 ] could be a promising phosphor used in white LED.
分 类 号:TB33[一般工业技术—材料科学与工程]
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