Manipulating the properties of interfaces using nanoparticles has attracted widespread attention due to both scientific interest as well as use in practical applications including food, pharma, energy production and environmental remediation.  For example, the assembly of nanoparticles at interfaces stabilizes emulsions (so called Pickering emulsions) and offers the possibility to synthesize materials with controlled interfacial properties.  By varying the chemistry and dimensionality of the nanoparticles, the adsorption energy and thus the interfacial properties can be modulated and controlled.  In some cases, interfacial assembly of nanoparticles leads to a solid-like behavior or jamming with interfaces behaving like an elastic membrane with high modulus.   Surface functionalization of nanoparticles is a necessary and critical step to fine-tune their inter- and intramolecular interactions and thus their interfacial assembly.  In this talk, I will present a newly developed family of nanoparticles and discuss their assembly as a means to fine-tune the properties of emulsions especially under harsh environmental conditions.