On-surface synthesis of disilabenzene-bridged covalent organic frameworks.

ABSTRACT: Substituting carbon with silicon in organic molecules and materials has long been an attractive way to modify their electronic structure and properties. Silicon-doped graphene-based materials are known to exhibit exotic properties, yet conjugated organic materials with atomically precise Si substitution have remained difficult to prepare. Here we present the on-surface synthesis of one- and two-dimensional covalent organic frameworks whose backbones contain 1,4-disilabenzene (C₄Si₂) linkers. Silicon atoms were first deposited on a Au(111) surface, forming a AuSi_x film on annealing. The subsequent deposition and annealing of a bromo-substituted polyaromatic hydrocarbon precursor (triphenylene or pyrene) on this surface led to the formation of the C₄

SUBMITTER: Sun K 

PROVIDER: S-EPMC9836936 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature