Helical nanoplatelet superlattices assembled from green emissive CsPbI3 nanoplatelets

Abstract

We report the synthesis and self-assembly of green emissive CsPbI₃ nanoplatelets with a thickness of two monolayers (2 ML). These nanoplatelet assemblies show a three-dimensional stacking pattern and a chiral optical response without chiral ligands/templates. The addition of extra chiral molecules or carbon dots enables 100% control over the circular dichroism (CD) signals.