Constructing Molecular Networks on Metal Surfaces through Tellurium-Based Chalcogen-Organic Interaction

ACS Nano, Journal Year: 2024, Volume and Issue: 18(41), P. 28425 - 28432

Published: Oct. 3, 2024

On-surface molecular self-assembly presents an important approach to the development of low-dimensional functional nanostructures and nanomaterials. Traditional strategies primarily exploit hydrogen bonding or metal coordination, yet potential chalcogen (ChB) for on-surface self-assemblies remains underexplored. Here, we explore fabricating networks via tellurium (Te)-directed chalcogen-organic interactions. Employing carbonitrile molecules as building blocks, have achieved extended 2D exhibiting a 4-fold binding motif on Au(111), marking notable difference from conventional coordinative interaction involving transition metals. Our findings, supported by density theory (DFT) scanning tunneling spectroscopy (STS), show that Te-carbonitrile exhibits lower stability compared metal-organic construction Te-directed does not alter electronic properties involved molecules. Introducing chalcogen-directed interactions may expand spectrum in supramolecular assembly, contributing design advanced architectures nanotechnological applications.

Language: Английский

Double Chalcogen Bonding Recognition Arrays in Solution

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(60)

Published: July 26, 2024

N-substituted pyridino-based congeners of Ebselen, named here as Pyrselen, incorporating proximal Se and N atoms, undergo dimerization in solution the solid state through a dual donor-acceptor arrangement chalcogen bonding sites. Dimerization constants were measured within 5-50 M

Language: Английский

On-Surface Molecular Recognition Driven by Chalcogen Bonding

JACS Au, Journal Year: 2024, Volume and Issue: 4(6), P. 2115 - 2121

Published: June 5, 2024

Chalcogen bonding interactions (ChBIs) have been widely employed to create ordered noncovalent assemblies in solids and liquids. Yet, their ability engineer molecular self-assembly on surfaces has not demonstrated. Here, we report the first demonstration of on-surface recognition solely governed by ChBIs. Scanning tunneling microscopy ab initio calculations reveal that a pyrenyl derivative can undergo chiral dimerization Au(111) surface through double Ch···N involving Te- or Se-containing chalcogenazolo pyridine motifs. In contrast, reference chalcogenazole counterparts lacking pyridyl moiety fail form regular self-assemblies Au, resulting disordered assemblies.

Language: Английский