ИСТИНА

Films and coatings of nanoparticles (NPs) are key components in many emerging technologies due to their distinctive opto-electrical, biological and magnetic properties. In this case, soft interfaces, such as liquid-liquid interfaces (LLIs), can serve as a perfect platform to self-assemble 2D as well as 3D films of NPs. Since the discovery of the metal liquid-like films (MELLFs) by Yogev and Efrima in their pioneering work in 19881, many attempts have been made to improve the synthetic procedure and investigate the properties of such films.2-4 Here, we introduce a novel and facile approach to encapsulate macroscopic droplets with AuNPs in a way that does not require functionalization of AuNPs or covalent linkers. Simply contact between an aqueous citrate stabilized colloidal AuNP solution and an oil phase incorporating tetrathiafulvalene (TTF), with subsequent vigorous shaking of the system, leads to the formation of a continuous shining gold film in a stepwise manner (Fig.1A).5 The obtained AuNPs assembles are dynamic in nature allowing them to self-heal after re-dispersing process. Among potential applications there are: facilitated electron transfer across LLIs and electrocatalysis (Fig.1B), optical filters and mirrors with tuneable properties (Fig.1C), as well biphasic SERS and micro-droplets encapsulation to create containers.