Issue 38, 2024

Exceptional thermal stability of lanthanide-phosphonate frameworks

Abstract

A single-crystal-to-single-crystal transformation (SC–SC) of [Ln(H5btp)]·2H2O [where Ln3+ = Gd3+ (1Gd), Tb3+ (1Tb), Dy3+ (1Dy), Ho3+ (1Ho), Er3+ (1Er), and Tm3+ (1Tm)] led to the formation of [Ln(L)(HL)] (where L = [−(PO3)(C6H3)(PO2)] and HL = [−(PO2H)(C6H3)(PO2)]n) based on a polymeric phosphonate-based organic linker (i.e., a polyMOF). The resulting material has high thermal stability maintaining its crystallinity and structural features up to ca. 800 °C, thus being to date the most thermally-robust and stable MOF. This remarkable feature is attributed to the close compact 3D network maintained by the strong pyrophosphonate bridges formed by the dehydration of the material at high temperatures.

Graphical abstract: Exceptional thermal stability of lanthanide-phosphonate frameworks

Supplementary files

Article information

Article type
Communication
Submitted
20 มิ.ย. 2567
Accepted
02 ก.ย. 2567
First published
03 ก.ย. 2567

J. Mater. Chem. C, 2024,12, 15401-15407

Exceptional thermal stability of lanthanide-phosphonate frameworks

A. D. G. Firmino, R. F. Mendes, F. Figueira, J. P. C. Tomé and F. A. Almeida Paz, J. Mater. Chem. C, 2024, 12, 15401 DOI: 10.1039/D4TC02589J

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