Organometallic gold nanoparticles and thin films from cis- and trans-tetrazonium gold(III) salts for electrochemical and photothermal mirror properties

Panicker, Seema; Marcano, Arı́stides; Isah, Shehu; Kenney, Brianna; Workie, Bizuneh; Cui, Han; Lee, Haesung; Chehimi, Mohamed M.; Mohamed, Ahmed

doi:10.1016/j.jorganchem.2021.121681

Cited by 2 publications

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“…Tetrachloroaurate(III) counterions are excellent stabilizers for aryldiazonium cations. 17,[26][27][28][29][30] The preparation of aryldiazonium gold(III) salts is carried out in the presence of tetrachloroauric acid, HAuCl 4 , which provides an acidic medium for the diazotization reaction and also promotes complete dissolution of the aniline precursors to yield ammonium salts. Mohamed, et al protonated 4-aminobenzonitrile with HAuCl 4 in acetonitrile to form the ammonium benzonitrile tetrachloroaurate(III), which was subsequently oxidized using nitrosyl cation to form the diazonium gold(III) salt.…”

Section: Introductionmentioning

confidence: 99%

“…A major drawback in the use of diazonium salts is their instability, which makes their synthesis, isolation, and purification challenging. However, tetrachloroaurate(III) counterions are excellent stabilizers for aryldiazonium cations compared to nonreducible counteranions. ,− They have shown outstanding stability at room temperature (slowly evolving nitrogen gas over time) and considerable thermal stability. The preparation of aryldiazonium gold(III) salts is carried out in the presence of tetrachloroauric acid, HAuCl 4 , which provides an acidic medium for the diazotization reaction and also promotes complete dissolution of the aniline precursors to yield ammonium salts.…”

Section: Introductionmentioning

confidence: 99%

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Conceptual Developments of Aryldiazonium Salts as Modifiers for Gold Colloids and Surfaces

et al. 2021

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Modified colloids and flat surfaces occupy an important place in materials science research due to their widespread applications. Interest in development of modifiers that adhere strongly to surfaces relates to the need for stability under ambient conditions in many applications. In the last 20 years, diazonium salts have evolved as the primary choice for modification of surfaces. The term 'diazonics' has been introduced in the literature to describe "the science and technology of aryldiazonium salt-derived materials". The facile reduction of diazonium salts via chemical or electrochemical processes, irradiation stimuli, or spontaneously, results in efficient modification of gold surfaces. Robust gold-organic nanoparticles and films modified by using diazonium salts are critical in electronics, sensors, medical implants, and materials for power sources. Experimental and theoretical studies suggest that gold-carbon interactions constructed via chemical reactions with diazonium salts are stronger than nondiazonium surface modifiers. This invited feature article summarizes the conceptual development of recent studies of diazonium salts in our laboratories and others with a focus on surface modification of gold nanostructures and flat surfaces, and their applications in nanomedicine engineering, sensors, energy, forensic science, and catalysis.

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