Тип публикации: статья из журнала
Год издания: 2023
Идентификатор DOI: 10.1002/smll.202301637
Аннотация: <jats:title>Abstract</jats:title><jats:p>Oil-in-water emulsion droplets spontaneously adopt, below some temperature T<jats:sub><jats:italic>d</jats:italic></jats:sub>, counterintuitive faceted and complex non-spherical shapes while remaining liquid. This transition is driven by a crystalline monolayer formed at the droplets' surfacПоказать полностьюe. Here, we show that ppm-level doping of the droplet's bulk by long-chain alcohols allows tuning T<jats:sub><jats:italic>d</jats:italic></jats:sub>by >50 °C, implying formation of drastically different interfacial structures. Furthermore, “magic” alcohol chain lengths maximize T<jats:sub><jats:italic>d</jats:italic></jats:sub>. This we show to arise from self-assembly of mixed alcohol:alkane interfacial structures of stacked alkane layers, co-crystallized with hydrogen-bonded alcohol dimers. These structures are accounted for theoretically and resolved by direct cryogenic transmission electron microscopy (cryoTEM), confirming the proposed structures. The discovered tunability of key properties of commonly-used emulsions by minute concentrations of specific bulk additives should benefit these emulsions' technological applicability.</jats:p>
Журнал: Small
Выпуск журнала: Т. 19, № 39
ISSN журнала: 16136810
Издатель: VCH Verlag GmbH & CO. KGaA