Insight into the Luminescence Behavior of Europium(III) β-Diketonate Complexes Encapsulated in Zeolite L Crystals

Supramolecular Organization in Confined Nanospaces

Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.

Porous organic polymers based on melamine and 5,5′-bis(bromomethyl)-2,2′-bipyridine: functionalization with lanthanide ions for chemical sensing and highly efficient adsorption of methyl orange

Microporous POP-1 displays extremely fast adsorption of MO dyes. Moreover, Eu³⁺@POP-1 for chemical sensing can be easily prepared by a postsynthetic method.

Luminescent materials of lanthanoid complexes hosted in zeolites

Our emphasis is on understanding the influence of microenvironments of the void spaces on the luminescence performances of the encapsulated lanthanide complexes.

Luminescent hybrid composites based on the intercalation of Eu(iii) complexes into α-zirconium phosphate nanoplatelets: preparation, characterization and amine sensing

A direct ion-exchange approach was adopted to intercalate ionic lanthanide complexes into layered α-zirconium phosphate.

Europium(III)-β-diketonate complex-containing nanohybrid luminescent pH detector

In this work, by loading an Eu(3+)-β-diketonate complex into LAPONITE®, we report an organic-inorganic hybrid pH detection system Eu(3+)(TTA)n@Lap that is valid under acid conditions, which can serve as highly robust, reliable, rapid responsive and sensitive fluorescent pH detector. In addition, this hybrid pH detector can be easily recovered and reused by simply treating with Et3N vapor.

Luminescent europium(III)-β-diketonate complexes hosted in nanozeolite L as turn-on sensors for detecting basic molecules

The luminescence efficiency of Eu(3+)-β-diketonate complexes entrapped within the channels of nanozeolite L is severely decreased by the acidic environment in the channels. The neutralization of the acid sites can remarkably increase the luminescence efficiency due to the formation of complexes with high coordination numbers. Herein we report a simple, effective and robust luminescent sensor for detecting basic molecules (such as amines) based on the above observations.

Luminescent materials of zeolite functionalized with lanthanides

Luminescent materials based on the functionalization of zeolite with lanthanide constitute an intense research topic since they combine the attractive properties of zeolite and unique optical properties of Ln³⁺ ions. This review highlights the utilization of zeolite as luminescent materials showing tunable luminescence performance, well-organized structures and useful host–guest interactions.