Regulating Rotational Dynamics of Co-Adsorbed Guest Molecules via Halogen Bonds in Functionalized Pores of Self-Assembled Molecular Networks at the Liquid-Solid Interface.

ABSTRACT: Understanding and controlling molecular rotation on surfaces is crucial for the development of molecular-scale artificial motors that operate at interfaces. Herein, it is reported the successful co-adsorption of guest molecules within the functionalized 2D pores of self-assembled molecular networks (SAMNs) through directional halogen bonding, as confirmed by scanning tunneling microscopy. Specifically, the porous SAMN formed by dehydrobenzo[12]annulene derivative DBA-Py with a pyridyl group at the termini of its three alkoxy chains, hosts an iodinated trigonal guest molecule, tris(4-iodophenyl)benzene (TIB), through a halogen bond between the nitrogen and iodine atoms. Within the pores, the TIB molecule exhibits rotational motion, preferentially residing at two locations. In contrast, with

SUBMITTER: Machida Y 

PROVIDER: S-EPMC11899523 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature