Room-temperature superprotonic conductivity in COOH-functionalized multicomponent covalent organic frameworks.

ABSTRACT: In solid materials, the development of hydrogen bonding (H-bonding) networks within pores is crucial for efficient proton conductance. In this study, a chemically stable carboxylic acid-functionalized, quinoline-linked 2D microporous covalent organic framework (COF) (Qy-COOH) was synthesized using the Doebner multicomponent reaction (MCR) and compared to a similar framework lacking the -COOH functionality (Qy-H), prepared via an MC Domino reaction. The proton conductivity of the -COOH-functionalized MCR-COF was significantly enhanced, reaching 10^-2 S cm^-1, attributed to strong H-bonding interactions between water molecules and the dangling -COOH groups within the COF pores. In contrast, the analogous Qy-H framework exhibited a much lower proton conductivity of

SUBMITTER: Chakraborty G 

PROVIDER: S-EPMC12766738 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature