Free-Standing Halogen-Bonded Nanosheets Formed by Ultrasonic Liquid Exfoliation.

ABSTRACT: Strong in-layer interactions are typically considered a key requirement for exfoliating layered materials to form nanosheets. Here, the formation of free-standing nanosheets held together by halogen bonding interactions is reported for the first time. Layered co-crystals are synthesized using either iodo- or bromo-functionalized halogen bond donors with pyridyl functionalized acceptors. Sonication resulted in dissolution in a range of polar organic solvents; however, stable suspensions showing Tyndall scattering are observed for the iodo-systems after exfoliation in water. Atomic force microscopy confirms the formation of micron-sized nanosheets approaching monolayer thickness. Powder X-ray diffraction of the nanosheets shows preferred orientation along the (1 1 0) plane, which confirms th

SUBMITTER: Purba PC 

PROVIDER: S-EPMC12806269 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature