Switchable sensitizers stepwise lighting up lanthanide emissions

Scientific Reports
Yan ZhangJian-Guo Deng

Abstract

Analagous to a long-ranged rocket equipped with multi-stage engines, a luminescent compound with consistent emission signals across a large range of concentrations from two stages of sensitizers can be designed. In this approach, ACQ, aggregation-caused quenching effect of sensitizers, would stimulate lanthanide emission below 10(-4) M, and then at concentrations higher than 10(-3) M, the "aggregation-induced emission" (AIE) effect of luminophores would be activated with the next set of sensitizers for lanthanide emission. Simultaneously, the concentration of the molecules could be monitored digitally by the maximal excitation wavelengths, due to the good linear relationship between the maximal excitation wavelengths and the concentrations {lg(M)}. This model, wherein molecules are assembled with two stages (both AIE and ACQ effect) of sensitizers, may provide a practicable strategy for design and construction of smart lanthanide bioprobes, which are suitable in complicated bioassay systems in which concentration is variable.

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Citations

Apr 7, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Hai-Bing XuMing-Hua Zeng
Jul 18, 2018·Chemistry : a European Journal·Yunxiang LeiYuping Dong
Oct 28, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Yuyao GuanZhigang Xie
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Andrey KnyazevYury Galyametdinov

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Methods Mentioned

BETA
light scattering
column chromatography
X
-ray
X-ray

Software Mentioned

SHELXTL

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