Power discontinuity and shift of the energy onset of a molecular de-bromination reaction induced by hot-electron tunneling

Abstract

Understanding the mechanism of molecular dissociation under applied bias is a fundamental requirement to progress in (electro)-catalysis as well as in (opto)-electronics. The working conditions of a molecular-based device and...

Thioetherification of Br-Mercaptobiphenyl Molecules on Au(111)

“…Indeed, before the annealing, this strong anchoring point enabled, at most, to change the assembly of the Br-MBP dimer from a cis to a trans configuration by rotating one of the molecules around the S bonding. 13 The full displacement of the annealed MBP structures, as shown in the Supporting Information SI2, confirms the weakening of the S−Au interaction. Furthermore, and perhaps most importantly, the integer manipulation, i.e., without causing the constituent elements to separate, corroborates the polymerization of the Br-MBP molecules.…”

“…The dehydrogenation of the sulf hydryl termination and the formation of Au-thiolated molecular pairs, as previously demonstrated. 13 This is consistent with similar sulfhydryl molecular terminations in mercapto or thiophenyl molecules. All adsorbed molecules are involved in this reaction, which is followed by the formation of molecular dimers bonded through the S−Au−S interaction.…”

Light assisted synthesis of poly-para-phenylene on Ag(001)

“…As pointed out in Barragán et al [64] , heating induced by vibrational modes plays a negligible role in bond dissociation with respect to electronic population of the C-Br* antibonding state whenever the electron energy is high enough [65]. Spatially, photon absorption extends over the range of the penetration depth of the incoming light.…”

Empowering non-covalent hydrogen, halogen, and [S–N]2 bonds in synergistic molecular assemblies on Au(111)

“…23–25 Indeed, very often, these interactions are masked by strong covalent bonds in metal–organic assemblies, or by the interaction with the supporting metal surfaces. 26–30…”

“…[23][24][25] Indeed, very often, these interactions are masked by strong covalent bonds in metal-organic assemblies, or by the interaction with the supporting metal surfaces. [26][27][28][29][30] Here, we report on the multiple secondary bonds leading to the assembly of one molecular species, namely 4,7-dibromobenzo[c]-1,2,5-thiadiazole (2Br-BTD), in two ordered networks supported on Au(111) surface (ESI1-3 †). We demonstrate that, favoured by the weak molecular interaction with the Au surface, the cohesion of the two assemblies is driven by the synergistic interaction of sulphur (S), nitrogen (N), hydrogen (H) and bromine (Br) atoms.…”