Issue 37, 2021

Multicolour lanthanide(iii) porous 1D coordination polymers: tunable wide spectrum emission and efficient CuII sensing

Abstract

Five isostructural 1D porous coordination polymers (PCPs) with a general formula of {[M(L)(DMF)(H2O)]·1.5H2O}n [M = TbIII (1), EuIII (2), YbIII (3), NdIII (4) and ErIII (5)] have been synthesized using a flexible tripodal organic linker (L) and characterized. TbIII (1) and EuIII (2) PCPs exhibit metal-based green and red emission, respectively, whereas YbIII (3), NdIII (4) and ErIII (5) PCPs show near-infrared (NIR) emission. Doping EuIII in 1 in a precisely controlled stoichiometric amount leads to different mixed lanthanide PCPs, {[Tb1−xEux(L)(DMF)(H2O)]·1.5H2O}n (1a–1f) that show tunable emission including that of bright white light. The PCPs decorated with Lewis basic –O– binding sites make them potential candidates for the binding and selective sensing of traces of CuII ions, and this is illustrated for PCP 2 (limit of detection = 0.69 ± 0.02 ppm). The photoluminescence of 2 can be recovered by the introduction of a chelating ligand ethylenediaminetetraacetic acid (EDTA) without any structural disintegration, indicating the potential of the lanthanide PCPs for future sensing applications.

Graphical abstract: Multicolour lanthanide(iii) porous 1D coordination polymers: tunable wide spectrum emission and efficient CuII sensing

Supplementary files

Article information

Article type
Paper
Submitted
07 jun. 2021
Accepted
30 jul. 2021
First published
30 jul. 2021

Dalton Trans., 2021,50, 13002-13011

Multicolour lanthanide(III) porous 1D coordination polymers: tunable wide spectrum emission and efficient CuII sensing

S. Karmakar, A. Ghosh, K. Prasad, F. A. Rahimi, D. Rambabu, R. Haldar and T. K. Maji, Dalton Trans., 2021, 50, 13002 DOI: 10.1039/D1DT01860D

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