6533b86dfe1ef96bd12c96a4
RESEARCH PRODUCT
Overcoming Steric Hindrance in Aryl‐Aryl Homocoupling via On‐Surface Copolymerization
Daniele PasseroneAkimitsu NaritaAkimitsu NaritaShi-xia LiuPascal RuffieuxHironobu HayashiCarlo A. PignedoliSilvio DecurtinsJosé I. UrgelGuido GandusXunshan LiuQiang ChenKlaus MüllenKlaus MüllenHiroko YamadaRoman FaselRoman FaselMarco Di Giovannantoniosubject
Steric effectsArylIntermolecular force02 engineering and technologyConjugated system010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesCombinatorial chemistryAtomic and Molecular Physics and Optics0104 chemical sciencesNanomaterialschemistry.chemical_compoundAdsorptionchemistryCovalent bond540 ChemistryCopolymer570 Life sciences; biologyPhysical and Theoretical Chemistry0210 nano-technologydescription
On-surface synthesis is a unique tool for growing low-dimensional carbon nanomaterials with precise structural control down to the atomic level. This novel approach relies on carefully designed precursor molecules, which are deposited on suitable substrates and activated to ultimately form the desired nanostructures. One of the most applied reactions to covalently interlink molecular precursors is dehalogenative aryl-aryl coupling. Despite the versatility of this approach, many unsuccessful attempts are also known, most of them associated to the poor capability of the activated precursors to couple to each other. Such failure is often related to the steric hindrance between reactants, which may arise due to their coplanarity upon adsorption on a surface. Here, we propose a copolymerization approach to overcome the limitations that prevent intermolecular homocoupling. We apply the strategy of using suitable linkers as additional reactants to the formation of fully conjugated polycyclic nanowires incorporating non-benzenoid rings.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 | ChemPhysChem |