Temperature-sensitive europium(III) probes and their use for simultaneous luminescent sensing of temperature and oxygen
Temperature-sensitive europium(III) probes and their use for simultaneous luminescent sensing of temperature and oxygen
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DOI：
10.1021/ac060311d
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发表时间：
2006-07-15
影响因子：
7.4
通讯作者：
Wolfbeis, Otto S.
中科院分区：
文献类型：
--
作者：
Borisov, Sergey M.;Wolfbeis, Otto S.
高度光稳定和强烈发光的铕-（III）β-二酮配合物，可以作为新的探针的光学温度传感。它们可以用405 nm LED的光激发，并具有很强的亮度。在聚（乙烯基甲基酮）膜和聚（叔丁基苯乙烯）微粒中包含的探针的衰减时间在0和70摄氏度之间高度依赖于温度。将温度敏感性微粒沿着由聚（苯乙烯-共-丙烯腈）中的钯卟啉氧指示剂组成的氧敏感性微珠分散在水凝胶的薄层中，以得到可由单一光源激发的双重传感材料。这两种发射可以通过适当的滤光器分离。对氧气和温度的响应由3D图描述，并且如果在迭代步骤中细化，则可以分别从两个发光信号获得温度和氧气的无偏值。该传感方案旨在用于氧气的温度补偿传感，（微）生物和医疗应用中的氧气和温度的非接触式传感，高分辨率氧气分布，以及风洞中气压和温度的同时成像。
Highly photostable and strongly luminescent europium-(III) beta-diketonate complexes are presented that can act as new probes for optical sensing of temperature. They can be excited with the light of a 405-nm LED and possess strong brightnesses. The decay times of the probes contained in a poly(vinyl methyl ketone) film and in poly-(tert-butyl styrene) microparticles are highly temperature-dependent between 0 and 70 degrees C. The temperature-sensitive microparticles were dispersed, along with oxygen-sensitive microbeads consisting of a palladium porphyrin oxygen indicator in poly(styrene-co-acrylonitrile), in a thin layer of a hydrogel to give a dually sensing material which is excitable by a single light source. The two emissions can be separated by appropriate optical filters. The response to oxygen and temperature is described by 3D plots, and unbiased values can be obtained for temperature and oxygen, respectively, from the two luminescence signals if refined in an iteration step. The sensing scheme is intended for use in temperature-compensated sensing of oxygen, in contactless sensing of oxygen and temperature in (micro) biological and medical applications, in high-resolution oxygen profiling, and for simultaneous imaging of air pressure and temperature in wind tunnels.