【作者】 赵典； 崔元靖； 钱国栋；

【Author】 Dian Zhao;Yuanjing Cui;Guodong Qian;School of Materials Science and Engineering, Zhejiang University;

【机构】 浙江大学材料科学与工程学院；

【摘要】 准确的探测温度对于自然科学和人类的日常生活有着很重要的意义。比率型荧光温度传感技术由于具有自校准、测试精度高、灵敏度高和可操作性强等诸多优势,在近年来受到广泛关注。镧系金属-有机框架(MOFs)作为一种新型的多功能发光材料,在荧光温度传感领域的具有非常广阔的应用前景。目前,荧光温度传感的MOFs材料多集中于研究其在10~300 K低温区域的温度传感特性,在生理温度范围具有传感特性的发光MOFs材料并不多见。针对上述问题,我们结合理论计算设计了三重态能级处于25269cm-1的有机桥连配体联苯-3,5-二甲酸(H2BPDA),和稀土离子构建了一类新型的二维结构的混合稀土MOFs Tb0.8Eu0.2BPDA,该材料在生理温度区域(298~328 K)具有自校准荧光温度传感特性,并且在313K下温度探测灵敏度达到1.19%/K,可以潜在地应用于生物组织细胞内温度探测和热成像。更多还原

【Abstract】 The accurate measurement of temperature is of great importance in all areas of nature science and human life. The luminescent-based ratiometric thermometry technique has attracted much attention because of their unique characteristics, including accuracy, self-calibrated and applicability in complex environment. Recently, lanthanide metal-organic frameworks（MOFs） have emerged as very important multifunctional luminescent materials that can be applied for temperature sensing. Several Ln MOFs have been developed as ratiometric thermometers in the range 10-300 K（thus not cover the physiological range）. In this work, the organic ligand biphenyl-3,5-dicarboxylic acid with the suitable triplet states(25269cm^-1) was selected for the synthesis of the novel mixed-lanthanide metal-organic framework Tb_0.8Eu_0.2BPDA. This material exhibits excellent temperature-dependent photoluminescence properties and high relative sensitivity in the physiological temperature range of 298–328 K, can be potentially applied for intracellular sensing or thermal mapping in biological system.更多还原