Di-functional luminescent sensors based on Y³⁺ doped Eu³⁺ and Tb³⁺ coordination polymers: fast response and visible detection of Cr³⁺, Fe³⁺ ions in aqueous solutions and acetone.

ABSTRACT: With the careful modulation of the relative ratio of Y³⁺/Eu³⁺and Y³⁺/Tb³⁺, two series of bimetallic RE-CPs (Eu _x Y_{1- x} and Tb _x Y_{1- x} ) were successfully obtained through the isomorphous substitution method. Interestingly, the introduction of Y³⁺ ions does not change the fluorescence characteristic peak of 1-Eu and 1-Tb, but enhances its fluorescence lifetime and quantum yield. Experimental and theoretical simulation results show the co-doping process changes the intramolecular energy transfer process and reduces the non-radiative transition resulting from concentration quenching. Eu_0.1Y_0.9 and Tb_0.1Y_0.9</

SUBMITTER: Liu H 

PROVIDER: S-EPMC9056567 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature