Rare-Earth Metal Tetrathiafulvalene Carboxylate Frameworks as Redox-Switchable Single-Molecule Magnets.

Autor: Su J; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., Yuan S; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA., Li J; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., Wang HY; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., Ge JY; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., Drake HF; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA., Leong CF; School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia., Yu F; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., D'Alessandro DM; School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia., Kurmoo M; Institut de Chimie de Strasbourg, CNRS-UMR7177, Université de Strasbourg, 4 rue Blaise Pascal, Strasbourg, 67000, France., Zuo JL; State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P.R. China., Zhou HC; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2021 Jan 07; Vol. 27 (2), pp. 622-627. Date of Electronic Publication: 2020 Dec 03.
DOI: 10.1002/chem.202004883
Abstrakt: Using the redox-active tetrathiafulvalene tetrabenzoate (TTFTB 4- ) as the linker, a series of stable and porous rare-earth metal-organic frameworks (RE-MOFs), [RE 9 (μ 3 -OH) 13 (μ 3 -O)(H 2 O) 9 (TTFTB) 3 ] (1-RE, where RE=Y, Sm, Gd, Tb, Dy, Ho, and Er) were constructed. The RE 9 (μ 3 -OH) 13 (μ 3 -O) (H 2 O) 9 ](CO 2 ) 12 clusters within 1-RE act as segregated single-molecule magnets (SMMs) displaying slow relaxation. Interestingly, upon oxidation by I 2 , the S=0 TTFTB 4- linkers of 1-RE were converted into S= 1 / 2 TTFTB .3- radical linkers which introduced exchange-coupling between SMMs and modulated the relaxation. Furthermore, the SMM property can be restored by reduction in N,N-dimethylformamide. These results highlight the advantage of MOFs in the construction of redox-switchable SMMs.
(© 2020 Wiley-VCH GmbH.)
Databáze: MEDLINE
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