Chiral Catalytic Interfaces for Emergent Composite Complexity

Translating molecular chirality into organized structures and functional properties across multiple length scales remains a central challenge in soft and hybrid materials. Although helical polymers can exhibit distinctive optical, structural, and mechanical behavior, conventional approaches typically separate polymer synthesis from composite assembly, limiting control over how chirality is expressed beyond the molecular scale.

In this talk, I will describe a strategy in which chiral nanoparticle surfaces serve simultaneously as catalytic interfaces for polymer synthesis and as organizing elements for hierarchical composite formation. A central finding is that the symmetry of the nanoparticle population governs distinct pathways of structural emergence. Homochiral nanoparticle systems promote directionally biased, twisted architectures, whereas racemic systems form more globally balanced and structurally coherent assemblies. These differences reveal how local chiral interactions and collective symmetry can compete or cooperate to determine organization at larger length scales. 

The resulting nanoparticle composites also exhibit enhanced mechanical properties relative to physically mixed composites, reflecting improved nanoparticle dispersion and strong interfacial coupling. More broadly, this work shows that catalytic nanoparticle interfaces can encode structural information during polymer growth, establishing interfacial chirality and symmetry as design variables for directing hierarchical organization and emergent properties in polymer nanocomposites.