User:Douglas M. Fox/Notebook/AU CHEM-571 F2011 Lab Support/2012/01/11

Project 2: Gold Nanoparticle Incorporation

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Project Objectives Measure properties of BSA - Gold solutions Electrochemical response of K3Fe(CN)6 redox couple Formation of purple colloidal solution Formation of purple fibers Today's Tasks Preparation of 2mM K3Fe(CN)6 + 1 M KNO3 stock solution Preparation of 0.25mM Au + 60:1 BSA:Au solution in HAc/NaAc buffer Preparation of 0.25mM Au + 170:1 BSA:Au solution in HAc/NaAc buffer Notes K3Fe(CN)6 stock solution prepared 100 mL quick connect to pot/galv failed (E overload due to reference electrode open circuit) supporting electrolyte does not need tp be 1 M; 0.1 M should be enough UV/VIS at room temperature taken Au - BSA solutions white precipitate formed in all solutions attempts in both plastic & glass failed [Au] was only 0.025mM heated at 80C for 30 min also failed UV/VIS at room temperature taken; no noticable peak!