Light Response and Switching Behavior of Graphene Oxide Membranes Modified with Azobenzene Compounds.

ABSTRACT: Here, we report on the fabrication of light-switchable and light-responsive membranes based on graphene oxide (GO) modified with azobenzene compounds. Azobenzene and para-aminoazobenzene were grafted onto graphene oxide layers by covalent attachment/condensation reaction prior to the membranes' assembly. The modification of GO was proven by the UV-vis, IR, Raman and photoelectron spectroscopy. The membrane's light-responsive properties were investigated in relation to the permeation of permanent gases and water vapors under UV and IR irradiation. Light irradiation does not influence the permeance of permanent gases, while it strongly affected that of water vapors. Both switching and irradiation-induced water permeance variation is described, and they were attributed to over 20% of t

SUBMITTER: Sadilov I 

PROVIDER: S-EPMC9699301 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature