Cyclodextrins functionalized polyvinylidene fluoride membranes: Strategies and diverse applications

Abstract

Cyclodextrin (CD)-functionalized membranes represent a promising advancement in the domain of organic chemistry, particularly in the development of functional materials. The unique toroidal structure of CDs facilitates their well-known host-guest interactions, enabling the encapsulation of various organic molecules and enhancing the adsorption capabilities of membranes. Functionalization of polyvinylidene fluoride (PVDF) membranes with CDs addresses the challenges posed by the hydrophobicity of PVDF, such as membrane fouling, permeability, and selectivity. This modification not only improves membrane performance but also expands its potential applications in areas such as water treatment, sensing, and biomaterials. This review provides a detailed examination of the synthetic strategies employed to achieve CD functionalization on PVDF, considering the chemical inertness of the polymer and the stability of the resulting materials. The performance of these CD-functionalized PVDF membranes is critically analyzed and the study highlights the intersection of organic synthesis, supramolecular chemistry, and material science, contributing to the development of advanced functional materials with broad applicability.