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Structural diversity of four lanthanide metal–organic frameworks based on 2,6-naphthalenedicarboxylate: synthesis, structures and photoluminescent properties

Authors :
Eric W. Reinheimer
Scott R. J. Oliver
Honghan Fei
Xueling Song
Pierre Le Magueres
Ana R.K. Chatenever
Beatriz Ehlke
Source :
CrystEngComm. 23:1388-1397
Publication Year :
2021
Publisher :
Royal Society of Chemistry (RSC), 2021.

Abstract

We report the crystal structures of four different neutral lanthanide (Ln = La, Nd, Eu and Gd) metal–organic frameworks based on the organic linker 2,6-naphthalenedicarboxylate (NDC). The materials are three-dimensional and crystallize in three distinct topologies, with distinct bonding modes of NDC and lanthanide coordination numbers ranging from seven to nine and varying geometry. We denote our materials SLUG-49 [La6(NDC)9(DMF)3·6 DMF], -50 [Nd2(NDC)3O(DMF)2], -51 [Eu2(NDC)3(DMF)2·DMF], and -52 [Gd4(NDC)6(DMF)4] (DMF = N,N-dimethylformamide). The structures exhibit similar thermal decomposition profiles and infrared spectra. The Eu(III)-based material exhibits a sharp red-orange luminescence at 613 nm with a quantum efficiency of 3.56%.

Details

ISSN :
14668033
Volume :
23
Database :
OpenAIRE
Journal :
CrystEngComm
Accession number :
edsair.doi...........bec41508bade5d6d3beeb5dc47aacb85
Full Text :
https://doi.org/10.1039/d0ce01448f