Catechin or quercetin guests in an intrinsically microporous polyamine (PIM-EA-TB) host: accumulation, reactivity, and release

Abstract

Microporous polymer materials based on molecularly “stiff” structures provide intrinsic microporosity, typical micropore sizes of 0.5 nm to 1.5 nm, and the ability to bind guest species.

Advances in Polymers of Intrinsic Microporosity (PIMs)-Based Materials for Membrane, Environmental, Catalysis, Sensing and Energy Applications

“…Moreover, amine-containing PIMs, such as PIM-EA-TB, contain a tertiary amine functional group that can interact and bind to metal complexes or herbal drugs. 214,215 The resulting accumulation allows the generation of electrochemical oxidation signals proportional to the solution concentration, which helps efficiently detect these active redox species. Furthermore, an ionic diode membrane device has investigated the permeation of ionic species in PIMs, which allows read accumulation and depletion of ionic species in the system, as previously reported.…”

Polymers of intrinsic microporosity (PIMs) in sensing and in electroanalysis

“…The permeation and transport of species in liquid-filled PIM microchannels can be employed in sensing and detection. PIM-EA-TB has tertiary amine functional groups on the polymer backbone and therefore allows interactions with hydrogen bond forming guests such as metal complexes [34] or herbal drugs such as catechin and quercetin [35]. Accumulation of these redox active species gave electrochemical oxidation signals proportional to the solution concentration with a Langmuir isotherm related response.…”