Anion-induced adsorption of ferrocenated nanoparticles

Journal of the American Chemical Society
Rebecca L StilesRoyce W Murray

Abstract

Au nanoparticles fully coated with omega-ferrocenyl hexanethiolate ligands, with average composition Au225(omega-ferrocenyl hexanethiolate)43, exhibit a unique combination of adsorption properties on Pt electrodes. The adsorbed layer is so robust that electrodes bearing submonolayer, monolayer, and multilayer quantities of these nanoparticles can be transferred to fresh electrolyte solutions and there exhibit stable ferrocene voltammetry over long periods of time. The kinetics of forming the robustly adsorbed layer are slow; monolayer and submonolayer deposition can be described by a rate law that is first order in nanoparticle concentration and in available electrode surface. The adsorption mechanism is proposed to involve entropically enhanced (multiple) ion-pair bridges between oxidized (ferrocenium) sites and certain specifically adsorbed electrolyte anions on the electrode. Adsorption is promoted by scanning to positive potentials (through the ferrocene wave) and by high concentrations of Bu4N+ X- electrolyte (X- = ClO4(-), PF6(-)) in the CH2Cl2 solvent; there is no adsorption if X- = p-toluenesulfonate or if the electrode is coated with an alkanethiolate monolayer. The electrode double layer capacity is not appreciably di...Continue Reading

References

Mar 28, 2003·Analytical Chemistry·Deon T Miles, Royce W Murray
May 29, 2003·Journal of the American Chemical Society·Bernadette M QuinnKyösti Kontturi
May 14, 2004·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Valentina DomeniciBostjan Zalar
Nov 3, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Nirmalya Kumar ChakiKunjukrishna P Vijayamohanan
Jun 2, 2005·Journal of the American Chemical Society·Ramjee BalasubramanianRoyce W Murray
Feb 16, 2006·Analytical Chemistry·Rebecca L Wolfe, Royce W Murray
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Rebecca L WolfeRoyce W Murray

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Citations

Dec 1, 2012·Analytical Chemistry·Paulo R BuenoJason J Davis
Mar 18, 2011·Inorganic Chemistry·Daniel G MacDonaldJohn F Corrigan
May 10, 2011·Journal of the American Chemical Society·Rajesh Sardar, Jennifer S Shumaker-Parry
May 1, 2009·Journal of the American Chemical Society·Aifang WangPhilippe Hapiot
Jan 23, 2010·Journal of the American Chemical Society·Rajesh SardarRoyce W Murray
Mar 25, 2016·Inorganic Chemistry·Pilli V V N KishoreC W Liu
Jul 30, 2014·Journal of the American Chemical Society·Tessa M CarducciRoyce W Murray
Dec 10, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Amir Rabiee KenareeJoe B Gilroy
Mar 10, 2020·Chemical Society Reviews·Cristóbal QuintanaMark G Humphrey
Mar 22, 2020·Nanomaterials·Frédéric DumurCédric R Mayer
Jun 26, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Laura Cabo-FernándezDavid J Schiffrin
Jul 1, 2019·Particle & Particle Systems Characterization : Measurement and Description of Particle Properties and Behavior in Powders and Other Disperse Systems·Tirtha R SibakotiMichael H Nantz
Oct 10, 2009·Analytical Chemistry·Stephen W Feldberg, Jennifer F Campbell
Jul 4, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Rajesh SardarRoyce W Murray
Jun 10, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Christopher A Beasley, Royce W Murray
Feb 6, 2014·The Journal of Physical Chemistry Letters·Dileep MampallilSerge G Lemay
Dec 27, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Joseph J P RobertsRoyce W Murray

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