Purine-Functionalized Ferrocene Derivatives: Efficient Redox Catalysts for Oxidation of Methyl Blue and Reduction of Trinitrophenol - Sagar R. Sangani; Dax Patel; Ranjitsinh C. Dabhi; Tushar R. Sutariya; Sarfaraz Ahmed; Rakesh Kumar Ameta (ACS Organic & Inorganic Au)