Super-expansive thermo-reversible interstitial solid solution of nanocrystal superlattices with mesogens
Source abstract
Abstract
Designing superlattices of nanocrystals to mimic and extend the properties of atomic crystals has been a long-standing motivation in materials chemistry. Interstitial solid solutions, such as steel, are well-studied atomic lattices in which mobile components move among the interstices. These materials exhibit unique properties, including reversible structural changes and phase transitions. Interstitial solid solutions possess unique dynamic structures and reversible responses, which motivate the creation of their colloidal equivalents. Here we report a fully thermo-reversible colloidal interstitial solid solution by combining liquid crystals and nanocrystals functionalized with promesogenic ligands. Mesogen molecules fill and diffuse among the interstices of a superlattice, resulting in a super-large thermal expansivity. The approach uses a modular design of interparticle interactions, allowing control of interparticle distance, microstructure and transition between crystallographic forms.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Pickering emulsions and particle stabilization · Material Dynamics and Properties · Advanced Materials and Mechanics
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References (56)
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