荧光MOF的合成及选择性识别甲醇和氢氧根  

Synthesis and Selective Sensing of Methanol and Hydroxyl of Fluorescent MOF

作　　者：刘金旺 林雪莲 杨衍超 龚云南[1,2] LIU Jinwang;LIN Xuelian;YANG Yanchao;GONG Yunnan(School of Chemistry&Chemical Engineering,Gannan Normal University,Ganzhou 341000,China;Key Laboratory of Jiangxi University for Functional Material Chemistry,Gannan Normal University,Ganzhou 341000,China)

机构地区：[1]赣南师范大学化学化工学院,江西赣州341000 [2]赣南师范大学,江西省高等学校功能材料化学重点实验室,江西赣州341000

出　　处：《赣南师范大学学报》2021年第6期49-52,共4页Journal of Gannan Normal University

基　　金：江西省自然科学基金项目(20202BAB203001);江西省教育厅科技基金项目(GJJ190753)。

摘　　要：通过溶剂热技术,硝酸铕和均苯并菲三酸(H_(3)TTCA)在N,N-二甲基乙酰胺(DMA)溶剂中反应获得了一例荧光金属-有机框架(MOF)[Eu(TTCA)(DMA)(H_(2)O)]·1.5DMA·19H_(2)O(1).单晶测试结果表明1属单斜晶系,结晶于C2/c空间群.1是基于一维孔道的三维配位聚合物,且表现出强红色荧光.将1浸泡在一系列有机溶剂(如甲醇、乙醇、丙酮、氯仿、1,4-二氧己烷、二甲基亚砜)和NaX(X=F^(-)、Cl^(-)、Br^(-)、OH^(-))中时,1可通过荧光猝灭现象选择性识别甲醇分子和氢氧根离子,且可循环使用5次.Solvothermal reaction of triphenylene-2,6,10-tricarboxylicacid(H_(3)TTCA)with Eu(NO_(3))_(3) in N,N-dimethyl acetamid(DMA)gave a fluorescent metal-organic framework(MOF):[Eu(TTCA)(DMA)(H_(2)O)]·1.5DMA·19H_(2)O(1).The result of single X-ray structural analysis reveals that 1 crystallizes in the monoclinic space group C2/c.1 is a three-dimensional framework with one-dimensional channels.Moreover,1 shows strong red fluorescence and selective sensing of methanol and hydroxide by fluorescence quenching method after exposure to a series of organic solvents such as methanol,ethanol,acetone,chloroform,1,4-dioxane,DMSO and NaX(X=F^(-),Cl^(-),Br^(-),OH^(-)).In addition,the quenching and regeneration cycles can be repeated for 5 times,without loss of its luminescent intensity.

关 键 词：金属-有机框架 荧光 选择性识别 甲醇 氢氧根 

分 类 号：O657.3[理学—分析化学]