Preparation, crystal structure and proton conductive properties of a water-stable ferrocenyl carboxylate framework

Jun, Feng; Liu, Ying; Yin, Qingrui; Li, Gang

doi:10.1016/j.jssc.2022.123739

Cited by 3 publications

(1 citation statement)

References 66 publications

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“…At the same time, we recently found that several ferrocenyl carboxylate frameworks illustrated excellent σ values being above 10 –2 S/cm under certain experimental conditions. − For example, two ferrocene carboxylate-based frameworks (FCFs) supported by hydrogen bonds and π–π interactions, [FcCO-(CH 2 ) 2 COOH] and [FcCOOH] Fc = (η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 ) displayed excellent water stability and ultrahigh σ values of 1.17 × 10 –1 and 1.01 × 10 –2 S/cm (100 °C, 98% RH), respectively. Furthermore, several other ferrocene-based aromatic carboxylate frameworks have shown good proton conductivity and water stability, implying that ferrocenyl carboxylic acid derivatives could be efficient proton conductors.…”

Section: Introductionmentioning

confidence: 99%

Tailored Porous Ferrocene-Based Metal–Organic Frameworks as High-Performance Proton Conductors

Song,

Ren,

Zuo

et al. 2024

Inorg. Chem.

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Although crystalline metal−organic frameworks (MOFs) have gained a great deal of interest in the field of proton conduction in recent years, the low stability and poor proton conductivity (σ) of some MOFs have hindered their future applications. As a result, resolving the issues listed above must be prioritized. Due to their exceptional structural stability, MOFs with ferrocene groups that exhibit particular physical and chemical properties have drawn a lot of attention. This study describes the effective preparation of a set of three-dimensional ferrocene-based MOFs, MIL-53-FcDC-Al/Ga and CAU-43, containing both main group metals and 1,1′-ferrocene dicarboxylic acid (H 2 FcDC). Multiple measurements, including powder X-ray diffraction (PXRD), infrared (IR), and scanning electron microscopy (SEM), confirmed that the addition of ferrocene groups enhanced the thermal, water, and acid− base stabilities of the three MOFs. Consequently, their proton-conductive behaviors were meticulously measured utilizing the AC impedance approach, and their best proton conductivities are 5.20 × 10 −3 , 2.31 × 10 −3 , and 1.72 × 10 −4 S/cm at 100 °C/98% relative humidity (RH), respectively. Excitingly, MIL-53-FcDC-Al/Ga demonstrated an extraordinarily ultrahigh σ of above 10 −4 S• cm −1 under 30 °C/98% RH. Using data from structural analysis, PXRD, SEM, thermogravimetry (TG), and activation energy, their proton transport mechanisms were thoroughly examined. The fact that these MOFs are notably easy to assemble, inexpensive, toxinfree, and stable will increase the range of practical uses for them.

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