Palladium-induced transformation of nematic liquid crystals to robust metallogel comprising self-assembled nanowires

Abstract

Transformation of nematic liquid crystals to metallogels.

Heat triggered molecular restructuring results in triple gel–gel–gel transformations in a Li+-integrated metallogel

“…36 In addition to this, morphological transitions in supramolecular systems are mostly limited up to one step transformations i.e. , fibre–fibre, 37 vesicle–fibre, 38 fibre–crystal, 39 crystal–fibre, 40 crystal–crystal, 41 etc. , but, to the best of our knowledge, heat-assisted distinct two-step fibre–rod–fibre morphological evolution accompanied with macroscopic gel phase evolution is still rare in the literature, if not sporadic.…”

“…[32][33][34][35] But not much attention has been paid to in situ gelator alteration by chemical modification to obtain a metallogel with different colours. 36 In addition to this, morphological transitions in supramolecular systems are mostly limited up to one step transformations i.e., fibre-fibre, 37 vesicle-fibre, 38 fibrecrystal, 39 crystal-fibre, 40 crystal-crystal, 41 etc., but, to the best of our knowledge, heat-assisted distinct two-step fibre-rodfibre morphological evolution accompanied with macroscopic gel phase evolution is still rare in the literature, if not sporadic. It might be due to the fact that it is challenging to tune a wide range of non-covalent interactions under the influence of only one type of energy.…”

Switchable Supramolecular Configurations of Al3+/LysTPY Coordination Polymers in a Hydrogel Network Controlled by Ultrasound and Heat

“…Controlling the coordination-driven self-assembly of ligands in aqueous media, especially in hydrogels, provides a good platform to investigate intelligent materials in the fields of drug delivery, microsensors, catalysis, pharmaceutical crystal growth, tissue engineering, and biomaterials. − Especially, the coordination interaction changes of metallogels including association and dissociation, metal valence, and metal cores controlled by stimuli feature an array of exciting, reversible optical and electrochemical properties. − The resulting structural changes serve as a highly efficient approach to generate different kinds of self-assembled architectures and phases with multiple functions. For example, Yang has acquired a multiphase transition of Pt-based gels controlled by temperature-induced aggregation changes; Ishiwata has reported the transformation of hard MOF crystals to soft polymer gels, leading to chimera-type hybrid materials; and Zhang and Wei have demonstrated a coordination competition control in metallogels that is utilized for multiple analyte sensing. , These gels could be applied in many fields such as sensing platforms, simulation of biofunctions, information safety, and memory devices.…”