Fluorescence Enhancement by Calixarene Supramolecular Aggregate

Abstract

We herein constructed supramolecular assemblies from guanidinocalixarenes and sulfonatocalixarenes by exploiting multiple salt bridge interactions. They encapsulate six different kinds of fluorescent dyes (both cationic and anionic), leading to a fluorescence enhancement that could not be achieved by either single calixarene. As such, this study advances the research on high-performance fluorophores.

Molecular recognition and spectral tuning of organic dyes in water by amide naphthotubes

“…To date, a variety of macrocyclic hosts with a hydrophobic cavity, such as cyclodextrins, 6 cucurbiturils 7 and calixarenes, 8 have been reported to be able to encapsulate and thus tune the optical properties of organic dye molecules. The binding behavior heavily depends on the size, shape, and electronic compatibility of the host–guest pairs.…”