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Electrochemical deposition of N-heterocyclic carbene monolayers on metal surfaces.

Authors :
Amit, Einav
Amit, Einav
Dery, Linoy
Dery, Shahar
Kim, Suhong
Roy, Anirban
Hu, Qichi
Gutkin, Vitaly
Eisenberg, Helen
Stein, Tamar
Mandler, Daniel
Dean Toste, F
Gross, Elad
Amit, Einav
Amit, Einav
Dery, Linoy
Dery, Shahar
Kim, Suhong
Roy, Anirban
Hu, Qichi
Gutkin, Vitaly
Eisenberg, Helen
Stein, Tamar
Mandler, Daniel
Dean Toste, F
Gross, Elad
Source :
Nature communications; vol 11, iss 1, 5714; 2041-1723
Publication Year :
2020

Abstract

N-heterocyclic carbenes (NHCs) have been widely utilized for the formation of self-assembled monolayers (SAMs) on various surfaces. The main methodologies for preparation of NHCs-based SAMs either requires inert atmosphere and strong base for deprotonation of imidazolium precursors or the use of specifically-synthesized precursors such as NHC(H)[HCO3] salts or NHC-CO2 adducts. Herein, we demonstrate an electrochemical approach for surface-anchoring of NHCs which overcomes the need for dry environment, addition of exogenous strong base or restricting synthetic steps. In the electrochemical deposition, water reduction reaction is used to generate high concentration of hydroxide ions in proximity to a metal electrode. Imidazolium cations were deprotonated by hydroxide ions, leading to carbenes formation that self-assembled on the electrode's surface. SAMs of NO2-functionalized NHCs and dimethyl-benzimidazole were electrochemically deposited on Au films. SAMs of NHCs were also electrochemically deposited on Pt, Pd and Ag films, demonstrating the wide metal scope of this deposition technique.

Details

Database :
OAIster
Journal :
Nature communications; vol 11, iss 1, 5714; 2041-1723
Notes :
application/pdf, Nature communications vol 11, iss 1, 5714 2041-1723
Publication Type :
Electronic Resource
Accession number :
edsoai.on1367397447
Document Type :
Electronic Resource