A lanthanide-titanium oxo cluster-polymer composite:From clusters to fluorescent ink  

稀土钛氧簇-高分子复合材料:从簇合物到荧光油墨

作　　者：Yongkai Deng Xin Zheng Hao Zheng Han Xu Fushan Li Lasheng Long Lansun Zheng 邓永恺;郑鑫;郑浩;徐寒;李福山;龙腊生;郑兰荪(Collaborative Innovation Center of Chemistry for Energy Materials,State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China;Institute of Optoelectronic Technology,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]Collaborative Innovation Center of Chemistry for Energy Materials,State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [2]Institute of Optoelectronic Technology,Fuzhou University,Fuzhou 350116,China

出　　处：《Science China Materials》2021年第11期2883-2888,共6页中国科学（材料科学（英文版）

基　　金：the National Natural Science Foundation of China(21673184 and 21721001)。

摘　　要：Fluorescent ink has become an effective anti-counterfeiting material to prevent counterfeiters from making and selling fake products[1–4].From its practical application,an ideal fluorescent ink should be environmentally friendly,have high stability and good viscosity,and exhibit excellent luminescent performance.To obtain such fluorescent inks,different fluorescent materials,such as carbon dots[5–7],lanthanide-doped compounds[8–10],inorganic semiconductor complexes[11–13],organic dyes[14–16],metal-organic frameworks[17–19],lanthanide coordination compounds[20,21]and cluster compounds[22,23],have been used to prepare fluorescent inks.Although these fluorescent materials have their own advantages as fluorescent inks,they also have their own disadvantages.For example,organic dyes used as fluorescent inks often encounter the problems of aggregation-induced quenching and small Stokes shifts[14–16],while carbon dots suffer from unclear structures,and concerns about the reproducibility of carbon dots have affected their widespread use[5,6].要将荧光油墨应用于实际,通常要求该油墨对环境友好且稳定,并且具有良好的黏度和优异的发光性能.本文中,我们通过含有氨基的稀土钛氧簇Eu_(2)Ti_(4)-NH_(2)(1)与PEG(PEG=甲氧基聚乙二醇琥珀酰亚胺碳酸酯,2000 g mol^(-1))反应合成了稀土钛氧簇-高分子复合材料Eu_(2)Ti_(4)-NH_(2)@PEG(2).对2的相关表征表明,1的结构在2之内是完整的.1和2的发光性质表明其固态量子产率分别为50.91%和30.69%.与化合物1相比,2在极性溶剂中的溶解度和成膜性能大大提高.当使用2的乙醇/乙二醇(v/v=4/1)混合溶液用于喷墨打印的墨水时,喷墨打印的标签显示出良好的隐蔽性和有效性.

关 键 词：荧光油墨 高分子复合材料 甲氧基聚乙二醇 喷墨打印 极性溶剂 成膜性能 琥珀酰亚胺 量子产率 

分 类 号：TQ638[化学工程—精细化工] TB332[一般工业技术—材料科学与工程]