Authors: Saha, Subhadeep
Holzapfel, Björn
Chen, Yen-Ting
Terlinden, Kai
Lill, Pascal
Gatsogiannis, Christos
Rehage, Heinz
Clever, Guido H.
Title: Rational design of an amphiphilic coordination cage-based emulsifier
Language (ISO): en
Abstract: Self-assembled, porous coordination cages with a functional interior find application in controlled guest inclusion/release, drug delivery, separation processes, and catalysis. However, only few studies exist that describe their utilization for the development of self-assembled materials based on their 3-dimensional shape and external functionalization. Here, dodecyl chain-containing, acridone-based ligands (LA) and shape-complementary phenanthrene-derived ligands (LB) are shown to self-assemble to heteroleptic coordination cages cis-[Pd2(LA)2(LB)2]4+ acting as a gemini amphiphile (CGA-1; Cage-based Gemini Amphiphile-1). Owing to their anisotropic decoration with short polar and long nonpolar side chains, the cationic cages were found to assemble into vesicles with diameters larger than 100 nm in suitable polar solvents, visualized by cryo-TEM and Liquid-Cell Transmission Electron Microscopy (LC-TEM). LC-TEM reveals that these vesicles aggregate into chains and necklaces via long-range interactions. In addition, the cages show a rarely described ability to stabilize oil-in-oil emulsions.
Subject Headings: Amphiphiles
Coordination chemistry
Supramolecular chemistry
In situ liquid phase TEM
Issue Date: 2018-12-05
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Appears in Collections:Lehrstühle für Anorganische Chemie

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