Adsorption and Coupling of 4-aminophenol on Pt(111) Surfaces

Overview

Journal Surf Sci

Date 2016 Jun 10

PMID 27279673

Citations 4

Authors

G Otero-Irurueta

J I Martinez

R A Bueno

F J Palomares

H J Salavagione

M K Singh

J Mendez

G J Ellis

M F Lopez

J A Martin-Gago

Affiliations

Soon will be listed here.

Abstract

We have deposited 4-aminophenol on Pt(111) surfaces in ultra-high vacuum and studied the strength of its adsorption through a combination of STM, LEED, XPS and calculations. Although an ordered (2√3×2√3)R30° phase appears, we have observed that molecule-substrate interaction dominates the adsorption geometry and properties of the system. At RT the high catalytic activity of Pt induces aminophenol to lose the H atom from the hydroxyl group, and a proportion of the molecules lose the complete hydroxyl group. After annealing above 420K, all deposited aminophenol molecules have lost the OH moiety and some hydrogen atoms from the amino groups. At this temperature, short single-molecule oligomer chains can be observed. These chains are the product of a new reaction that proceeds via the coupling of radical species that is favoured by surface diffusion.

Citing Articles

Role of the metal surface on the room temperature activation of the alcohol and amino groups of p-aminophenol.

Ruiz Del Arbol N, Palacio I, Sanchez-Sanchez C, Otero-Irurueta G, Martinez J, Rodriguez L J Phys Chem C Nanomater Interfaces. 2020; 124(36):19655-19665.

PMID: 33163138 PMC: 7116303. DOI: 10.1021/acs.jpcc.0c06101.

On-Surface Driven Formal Michael Addition Produces m-Polyaniline Oligomers on Pt(111).

Ruiz Del Arbol N, Sanchez-Sanchez C, Otero-Irurueta G, Martinez J, de Andres P, Gomez-Herrero A Angew Chem Int Ed Engl. 2020; 59(51):23220-23227.

PMID: 32761699 PMC: 7116460. DOI: 10.1002/anie.202009863.

Controlling a Chemical Coupling Reaction on a Surface: Tools and Strategies for On-Surface Synthesis.

Clair S, de Oteyza D Chem Rev. 2019; 119(7):4717-4776.

PMID: 30875199 PMC: 6477809. DOI: 10.1021/acs.chemrev.8b00601.

On-Surface Bottom-Up Synthesis of Azine Derivatives Displaying Strong Acceptor Behavior.

Ruiz Del Arbol N, Palacio I, Otero-Irurueta G, Martinez J, de Andres P, Stetsovych O Angew Chem Int Ed Engl. 2018; 57(28):8582-8586.

PMID: 29931817 PMC: 6055674. DOI: 10.1002/anie.201804110.

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