Chemical Sciences Seminars

Using Atomic Force Microscopy (AFM) to probesome chemically and biologically relevant processes

by Dr. Pankaj Singh (Oalkand University, USA)

Monday, December 12, 2011 from to (Asia/Kolkata)
at Colaba Campus ( AG-69 )
TIFR, Colaba Mumbai 400005
Description
In this talk, I will give an overview of the work done by me using atomic force microscopy (AFM) in various research areas. First, I will discuss about the volume changes associated with conducting polymers with electrode potential by giving example of the volume changes in polyaniline in its different forms such as islands, thin films, microtubules and nanowires. Effect of the anionic size of the counter ionon the volume changes in polyaniline will also be discussed.This will be followed by the discussion of formation process and structure of perfluorosulfonated ionomer (Nafion®) on the highly oriented pyrolytic graphite (HOPG) surface and the size dependent electrochemical intercalation of ions into HOPG layers in ionic liquids. I will conclude by discussing application of AFM in a biological system by giving example of detection of binding of Herceptin (a monoclonal antibody used for the treatment of breast cancer) with a synthetic peptide.