ArticleThe Journal of organic chemistry2026
Phosphine-Functionalized Squaramides as Responsive Organogelators: Structure, Gelation, and Metal-Ion Sensing.
Article in The Journal of organic chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
Phosphine-functionalized squaramides represent a promising class of low-molecular-weight gelators (LMWGs) capable of forming supramolecular organogels in a variety of organic solvents, including alcohols. In this work, a series of phosphine-containing squaramides was designed and evaluated, revealing that subtle structural differences critically influence gelation ability. Molecular dynamics simulations demonstrate that the phosphine functionality plays a key role in directing self-assembly, promoting the formation of fibrillar networks responsible for gel stabilization. The resulting organogels exhibit a selective response toward metal ions, with gold precursors inducing rapid and complete gel collapse even at low concentrations, while other cations produce only minor or no macroscopic effects. Experimental observations, supported by molecular dynamics simulations, indicate that Au
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