Title : To synthesize egg white protected Au25 gold quantum clusters and investigation of their electroluminescence properties

We have synthesized Egg White protein protected gold quantum clusters (AuQC@eggwhite). Egg White protein was used as both reducing and capping agent. Synthesized AuQC@eggwhite was characterized by UV-Vis Spectroscopy, Photoluminescence Spectroscopy, Fourier Transform Infrared Spectroscopy (FT IR) and Matrix Assisted Laser Desorption Ionization Spectrometry (MALDI MS). Luminescent properties of these clusters have revealed that Vis-NIR emitting Au25 clusters were formed. Electrochemiluminescence properties of AuQC@eggwhite immobilized on conducting Indium-Tin Oxide plate were investigated. Immobilization of clusters on ITO was confirmed by X-Ray Photoelectron Spectroscopy, Photoluminescence Spectroscopy and Cyclic Voltametry. Electrochemiluminescence (ECL) properties were investigated using a setup by connecting photoluminescence spectrometer and cyclic voltameter together. We were able to observe ECL signal at positive potential of 0.7 V and 1.2 V.

Dr. Sushmita Chaudhari is an Assistant Professor in Computer Science and Engineering department Brainware University Barasat, Kolkata India. She received her Ph.D. degree from Indian Institute of Technology Hyderabad. Her research interests include fabrication of semiconductor materials and its characterization. Additionally, Simulation and prediction of photovoltaic cell performance based on its layer-by-layer properties using SCAPS 1D.