高效的 Tb 到 Eu 的能量转移用于比色发光传感。
Efficient Tb-to-Eu energy transfer for colorimetric luminescence sensing.
机构信息
Key Laboratory of Function Inorganic Material Chemistry (MOE), School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China.
Key Laboratory of Function Inorganic Material Chemistry (MOE), School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, PR China; Department of Food & Environmental Engineering, East University of Heilongjiang, Harbin, 150066, PR China.
出版信息
Anal Chim Acta. 2022 Aug 15;1221:340026. doi: 10.1016/j.aca.2022.340026. Epub 2022 Jun 8.
State-of-the-art Tb-to-Eu energy transfer (TEET) efficiency (>90%) under ultralow Eu proportion (<6%) has been achieved in Eu/Tb bimetallic lanthanide coordination polymers (LnCPs). The yellow-light-emitting sample as sensor exhibits micromolar l-phenylalanine (l-Phe) in water and serum via obvious yellow-to-green luminometric behavior, meanwhile nanomolar-level detection limits are determined in terms of an updated Stern-Volmer equation with high selectivity and competitiveness. Excited-state inter-ligand photon transfer (ESILPT) greatly contributes to superior TEET property and outstanding luminometric behavior. This work opens a window for developing sensitive and stable visualization sensing, being of values on monitoring biochemical markers.
在铕/铽双金属镧系配合物聚合物（LnCPs）中，实现了超低位铕比例（<6%）下的最新技术铽到铕能量转移（TEET）效率（>90%）。作为传感器的黄色发光样品在水中和血清中表现出对微摩尔级 l-苯丙氨酸（l-Phe）的明显黄到绿发光比色行为，同时根据更新的斯特恩-沃尔默方程以高选择性和竞争力确定了纳摩尔级别的检测限。激发态配体间光子转移（ESILPT）极大地有助于优异的 TEET 性能和杰出的发光行为。这项工作为开发灵敏稳定的可视化传感技术开辟了新的途径，对于监测生物化学标志物具有重要价值。
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