Photoluminescent Honeycomb Structures from Polyoxometalates and an Imidazolium‐Based Ionic Liquid Bearing a π‐Conjugated Moiety and a Branched Aliphatic Chain

Abstract

Honeycomb-structured films represent an intriguing class of two-dimensional porous materials. Specifically, polyoxometalate (POM) macroanions can be introduced into these films by complexing with oppositely charged, double-tailed surfactants. Here highly-ordered honeycomb structures are reported that can be constructed by the complexes between POMs and a room temperature ionic liquid (IL1) having an imidazolium moiety in the middle and a naphthyl unit and a branched aliphatic chain at the ends. The complexes can be produced through phase transfer between an aqueous solution of POMs (typically {Mo Fe }) and a CS (or chloroform) solution of IL1. Based on the intrinsic properties of {Mo Fe } and the functional groups of the IL1, the honeycomb structures show multiple functions with bright photoluminescence and rich electrochemical properties. This work shows that by simply engineering the organic ligands involved in the POM-based inorganic-organic complexes, supramolecular structures with improved properties and wide applications can be obtained.

Fullerene-Directed Synthesis of Flowerlike Cu3(PO4)2 Crystals for Efficient Photocatalytic Degradation of Dyes

“…Driven by our interests in both fullerene chemistry − and OIHs, herein, we report our recent experimental results on the synthesis of FLCs-Cu templated by water-soluble C 60 derivatives. Totally, three candidates were chosen, and their structures are shown in Scheme .…”

Two Penta-REIII Encapsulated Tetravacant Dawson Selenotungstates and Nanoscale Derivatives and Their Luminescence Properties

“…On the other hand, nanosized REOMs exhibit unrivaled potential applications such as tunable chemical and physical properties and have aroused fascinating attention. Although some POM-based REOMs have been synthesized by solid-state chemical reactions, microemulsion methods, phase transfer, ultrasonication, etc., no nanosized RESST materials have been isolated through a microwave method. Cetyltrimethylammonium bromide (CTABr) can serve as a cationic surfactant to make soluble RE-substituted POM species precipitate and form various nanoscale CTA-functionalized RESPMs, which endows them with outstanding adjustable fluorescence properties. − Thus, in this article, we first utilized the microwave method to prepare a series of nanosized CTA-encapsulated RESST materials derived from 1 through changes in the reaction time and temperature.…”

Cubic Liquid Crystals of Polyoxometalate-Based Ionic Liquids

“…Polyoxometalates (POMs) are a class of nanoscale polyanions with definite structures and sizes, various topologies, and rich physical and chemical properties, leading to broad applications in catalysis, magnetic-, photo-, and electronic-materials, and biological fields. − POMs have been regarded as good candidates of corrosion inhibitors due to their high negative charges in the periphery of the clusters and strong oxidation properties, which could form a passive film on the surface of metals. , Some reviews elucidated the anticorrosion performance of POMs, , where POMs combined with organic ammonium cationic surfactants showed better anticorrosion performance on account of their passivation-adsorption synergetic effect . However, the solid complexes of POMs with ammonium cationic surfactants are easy to be destroyed and difficult to be self-repaired when they serve as anticorrosion coatings.…”