Towards Nanostructured ITO-Based Electrochemical Sensors: Fabrication, Characterization and Functionalization

Proceedings

Pruna, Raquel¹ 

关键词: indium tin oxide;    ITO;    cyclic voltammetry;    organosilane;    XPS;    FTIR;    6-(ferrocenyl)hexanethiol;    electrochemical sensors;   

DOI  :  10.3390/proceedings1040288

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The need for miniaturized, low-cost and ultrasensitive electrochemical sensors has motivated the search and study of new nanostructured materials. We propose nanostructured indium tin oxide (ITO) electrodes as a promising platform due to their good electrical conductivity, transparency to visible wavelengths and high surface-to-volume ratio. The nanostructured electrodes were fabricated by electron beam evaporation, and electrochemical techniques were used to quantify more than a 40% increase in electrochemical surface area compared to thin ITO films. The electrodes were derivatized with organosilanes and coated with a molecule providing redox activity. Indeed, an increase in detectability of more than 400% was observed with respect to thin films, indicating the potential viability of nanostructured ITO-based electrochemical biosensors.

【 授权许可】

CC BY