Construction of dense H-bond acceptors in the channels of covalent organic frameworks for proton conduction

Abstract

The design of high conductive proton exchange membranes (PEMs) under high temperature anhydrous conditions is important for fuel cells. Covalent organic frameworks (COFs) are a class of promising template for...

High anhydrous proton conductivity and a smart proton transportation approach of a sulfate coordination polymer

“…6 This process may even occur in some devices, such as proton-exchange membrane fuel cells (PEMFCs). 7–11 We found similar ways of proton transfer in these processes. Therefore, understanding the basic proton transfer mechanisms is crucial for biology and chemistry, and elucidating the correlation between the structure and properties can effectively help optimize proton conductive materials for commercial electrochemical applications.…”

Eu3+-MOF fluorescence sensor based on a dual-ligand strategy for visualised detection of an anthrax biomarker 2,6-pyridine dicarboxylic acid

“…5b, the binding energy of N 1s shifts from 400.25 for Eu-MOF to 399.2 eV for DPA@Eu-MOF, suggesting that the density of the electron cloud around N changes because of the formation of N–H⋯O hydrogen bond. 43,44…”

A highly proton conductive perfluorinated covalent triazine framework via low-temperature synthesis

“…17 ), is much lower than that of H 3 PO 4 @CTF-TF, indicating that the fluorine here is a decisive factor for proton conductivity. The reason could be attributed to that the higher content of F atoms in the CTF pores may act as hydrogen-bonding acceptors 48 , promoting the formation of hydrogen-bonding networks along the channel and facilitating proton transport 49 .…”