Supramolecular coassembly of amino clay and anionic polyacrylamide with enhanced crystallinity and luminescence

In this work, we illustrate the role of amine-grafted inorganic clay minerals as the efficient supramolecular crosslinker for anionic polyacrylamide. Amine-grafted clay was synthesized, which possesses cationic two-dimensional surface to allow intercalation of polymer chains. Hydrogen bonding and electrostatic attraction enable the sufficient complexation between the components to give lamellar packing. The coassembled morphology shows dependence to the concentration and fraction of components. The crystalline architectures emerged at specific situation, which was confirmed by the X-ray diffraction results. Coassembly not only enhanced the ordered molecular arrangements, but also appended enhanced luminescent properties. This work investigates the role of amino clay as supramolecular crosslinker to control the ordered aggregation behavior of polymers, which offers a strategy to fabricate polymer-mineral composite materials.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

This work demonstrates the role of amine-grafted inorganic clay minerals as an efficient supramolecular crosslinker for anionic polyacrylamide. The study investigates the control of ordered aggregation behavior of polymers using amino clay as a supramolecular crosslinker, offering a strategy for fabricating polymer-mineral composite materials.