pH-Dependent inversion of optical activity in cysteine-directed chiral mesostructured In2S3

Abstract

Chiral mesostructured In₂S₃ particles with nanoflake morphology were fabricated via a hydrothermal method, using cysteine as both the symmetry-breaking agent and the sulphur source. The pH-dependent inversion of their optical activity was observed, which was speculated by the dynamic interfacial interactions between organic molecules and inorganic precursors.