Exceptional thermal stability of lanthanide-phosphonate frameworks

A single-crystal-to-single-crystal transformation (SC–SC) of [Ln(H 5 btp)]·2H 2 O [where Ln 3+ = Gd 3+ (1Gd), Tb 3+ (1Tb), Dy 3+ (1Dy), Ho 3+ (1Ho), Er 3+ (1Er), and Tm 3+ (1Tm)] led to the formation of [Ln(L)(HL)] (where L = [−(PO 3 )(C 6 H 3 )(PO 2 )] and HL = [−(PO 2 H)(C 6 H 3 )(PO 2 )] n ) base...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 12; no. 38; pp. 15401 - 15407
Main Authors Firmino, Ana D. G., Mendes, Ricardo F., Figueira, Flávio, Tomé, João P. C., Almeida Paz, Filipe A.
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 03.10.2024
Subjects
Bridge maintenance
Dehydration
Erbium
Gadolinium
High temperature
Holmium
Phosphonates
Single crystals
Structural stability
Thermal stability
Online AccessGet full text

Cover

More Information
Summary:A single-crystal-to-single-crystal transformation (SC–SC) of [Ln(H 5 btp)]·2H 2 O [where Ln 3+ = Gd 3+ (1Gd), Tb 3+ (1Tb), Dy 3+ (1Dy), Ho 3+ (1Ho), Er 3+ (1Er), and Tm 3+ (1Tm)] led to the formation of [Ln(L)(HL)] (where L = [−(PO 3 )(C 6 H 3 )(PO 2 )] and HL = [−(PO 2 H)(C 6 H 3 )(PO 2 )] 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.
ISSN:2050-7526
2050-7534
DOI:10.1039/D4TC02589J