Doped Luminescent Lanthanide Coordination Polymers Exhibiting both White-Light Emission and Thermal Sensitivity.

Inorg Chem

Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China.

Published: May 2021

Multifunctional lanthanide coordination polymers (CPs) have the advantages of acting in two or more fields simultaneously. Herein, two single lanthanide CPs, formulated as LnL(D/L-Hlac)(HO)·0.5HO (Ln = Eu (), Tb (); HL = 4,4'-(pyridine-3,5-diyl)dibenzoic acid) and their doped lanthanide analogue TbEuL(D/L-Hlac)(HO)·0.5HO () were prepared through hydrothermal methods. Luminescence measurements reveal that displays red photoluminescence and its Commission International ed'Eclairage (CIE) coordinates are almost invariant in the temperature range from 80 to 300 K, while the emission color of changes from yellow to green and its CIE coordinates change from (0.36132, 0.56365) at 80 K to (0.30448, 0.45566) at 300 K. Significantly, not only displays white-light emission with CIE coordinates of (0.32999, 0.33406) but also exhibits a thermal sensitivity of 2.27% K at 230-300 K. The obviously larger thermal sensitivity in in comparison to that of 1.07% K for demonstrates that lanthanide CPs with both a heat-sensitive fluorescent thermometer and high-efficiency white-light emission can be expected by doping Eu(III) ions into Tb(III)-based CPs.

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http://dx.doi.org/10.1021/acs.inorgchem.1c00740DOI Listing

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