Electrocatalytic Oxygen Reduction Activities of Thiol-Protected Nanomolecules Ranging in Size from Au28(SR)20 to Au279(SR)84 - Sumner, Leigh; Sakthivel, Naga Arjun; Schrock, Hayley; Artyushkova, Kateryna; Dass, Amala; Chakraborty, Saumen (Journal of physical chemistry. C, 2018)