Latest progress in proton-conducting hydrogen-bonded organic frameworks

Abstract

In recent years, the rapid development of investigation on hydrogen-bonded organic frameworks (HOFs) has provided a strong material basis for obtaining more functional materials with multiple applications (e.g., catalysis, gas...

Icing on the Cake: Imidazole-Anchored Strategy To Enhance the Proton Conductivity of Two Isostructural Ce(IV)/Hf(IV) Metal–Organic Frameworks

“…For Hf-UiO-66-NO 2 , proton conduction at both low and high humidity is the Vehicle mechanism. At 98% RH, the E a value of Im@Hf-UiO-66-NO 2 is 0.41 eV demonstrating that the proton conduction mechanism may be dominated by the Grouttuss mechanism. − Protons hop along the H-bonded network formed by functional groups (−OH and −NO 2 ) and imidazole and H 2 O molecules adsorbed in the pores. The rotation of imidazole adsorbed in the pore and the vibration of the N–H bond will promote proton jumping between H-bond networks, thus promoting proton conduction.…”

Photochromic Ln-Phosphonates Assembled by an Imidazole Derivative: Construction, Crystal Structures, and Light-Enhanced Proton Conductivity

“…In this regard, metal phosphoric/phosphonate CPs can be widely used in photochromism and proton conduction, benefitting from the diverse coordination modes (Scheme ) and excellent stability. − The O centers in phosphoric/phosphonate CPs could serve as electron donors to construct photochromic materials. Moreover, the electron-rich O atoms can further form hydrogen-bond networks with other components, providing abundant transport paths toward proton conduction behaviors . Therefore, phosphoric/phosphonate derivatives could also provide the possibility for constructing new materials with excellent photochromic and conductive properties.…”

“…Moreover, the electron-rich O atoms can further form hydrogen-bond networks with other components, providing abundant transport paths toward proton conduction behaviors. 49 Therefore, phosphoric/phosphonate derivatives could also provide the possibility for constructing new materials with excellent photochromic and conductive properties.…”