Extension of Novel Lanthanide Luminescent Mesoporous Nanostructures to Detect Fluoride
作者:Zhan Zhou、Yuhui Zheng、Qianming Wang
DOI:10.1021/ic402524z
日期:2014.2.3
assembly of new organic–inorganic functional materials. First, its multiple amide groups would coordinate to lanthanide ions firmly and transfer the absorbed energy to both Eu(III) and Tb(III) simultaneously. Second, the hydrogen-bond donor units showed strong affinity to guest anion (F–). Third, the two silylated arms could induce the formation of sol–gel derived siloxane hybrid materials. Following this
源自N 2,N 6-双(4,4-二乙氧基-9-oxo-3-oxa-8,10-diaza-4-siladodecan-12-yl)吡啶-2,6-二甲酰胺的新型多齿型配体(L)已被设计,它在新的有机-无机功能材料的组装中起着至关重要的作用。首先,其多个酰胺基将牢固地与镧系离子配位,并将吸收的能量同时转移至Eu(III)和Tb(III)。其次,氢键供体单元显示对客人阴离子强亲和力(F - )。第三,两个甲硅烷基化的臂可以诱导溶胶-凝胶衍生的硅氧烷杂化材料的形成。按照这个想法,两个镧系元素发光无定形颗粒(ASNs-Eu和已经准备了ASNs-Tb)来识别氟离子。合成方法的进一步修改和向介孔网络(MSNs-Eu和MSNs-Tb)的转化导致热稳定性大大提高,比表面积更大(Eu(III)从78.5至515 m 2 g –1; Eu(III)从89.6至487 m 2克-1为铽(III)),和更低的检出限(2