Water-driven reversible switching of single-ion magnetism and proton conduction in a dysprosium sulfonate

Abstract

We report the design and synthesis of a one-dimensional Dy(III) coordination polymer, comprised of sulfonate functionalized ligand 8-Hydroxyquinoline-5-sulfonic acid (H2SQ) and Dy3+ ions, with hydrogen-bonded supramolecular 3D structure. Interestingly, the...

A Proton Conducting Cobalt(II) Spin Crossover Complex

“…Additionally, the proton conductivity of 1 is humidity‐dependent, which was remarkably enhanced from 9.8×10 −8 S cm −1 under 50% RH to 6.9×10 −5 S cm −1 under 98% RH (Table S6, ESI). These results reveal that H 2 O plays a significant role in proton transport within the solid and confirm the proton conduction mechanism should be responsible for the conductivity in 1 [53] . To examine the proton transport mechanism, we measured the conductivity at different temperatures under the 95% RH (Figure 4b).…”

“…These results reveal that H 2 O plays a significant role in proton transport within the solid and confirm the proton conduction mechanism should be responsible for the conductivity in 1. [53] To examine the proton transport mechanism, we measured the conductivity at different temperatures under the 95% RH (Figure 4b). Considering the stability of the proton carriers (H 2 O), we performed the proton conductivity experiments under 50 °C to strictly ensure the thermal stability of the sample during the measurements.…”

Metalo Hydrogen-Bonded Organic Frameworks Self-Assembled by Charge-Assisted Synthons for Ultrahigh Proton Conduction

“…The conductivities are 1.2 × 10 –4 S cm –1 for 1 and 4.2 × 10 –4 S cm –1 for 2 under 60% RH at 353 K (Table S11, SI). Such a scenario should be attributed to the high density of coordinated water molecules and carboxylic acid groups. − Recent studies point out that coordinated water molecules are liable to prone the proton transport through the H-bonded network due to improved acidity after metal coordination . In addition to this, the high density of protonated and deprotonated carboxylic acid groups, which are not coordinated to the metal centers, is also important and can enhance the proton conductivity by enhancing the acidity of the material .…”

Homochiral Cu6Dy3 single-molecule magnets displaying proton conduction and a strong magneto-optical Faraday effect

“…For example, SMMs with strong magneto-optical Faraday effects have potential applications not only in magneto-optical switches, isolators, or sensors, but also in optical current transformers, 12,13 and SMMs with strong MChD are further expected to be used for optical readout of magnetic data. 14 Furthermore, when there is a network of hydrogen bonds with the participation of crystalline water molecules, proton conductivity may be assigned in SMM systems, [15][16][17][18] while ferromagnetism and conductive bifunctions were once thought to be difficult to coexist in molecular systems, 19 and such magneto-conduction molecular materials have the potential to be used in low-consumption spintronic devices. 20 To date, only a few cases of conductive SMMs have been reported; they still require external dc field induction to exhibit magnetic relaxation behavior, [15][16][17][18] and there are only a few cases of SMMs with magneto-optical Faraday effects but they are not conductive.…”

“…14 Furthermore, when there is a network of hydrogen bonds with the participation of crystalline water molecules, proton conductivity may be assigned in SMM systems, [15][16][17][18] while ferromagnetism and conductive bifunctions were once thought to be difficult to coexist in molecular systems, 19 and such magneto-conduction molecular materials have the potential to be used in low-consumption spintronic devices. 20 To date, only a few cases of conductive SMMs have been reported; they still require external dc field induction to exhibit magnetic relaxation behavior, [15][16][17][18] and there are only a few cases of SMMs with magneto-optical Faraday effects but they are not conductive. [11][12][13] It is a great challenge to obtain nanomolecules with integrated conductive, magnetic, and strong magneto-optical functions.…”