European Chemistry Congress

Biography

Biography: Yangping Wen

Abstract

PEDOT one of extraordinary polythiophene derivatives available, has been widely employed in photovoltaic cells, sensors, light-emitting diodes, field-effect transistors, capacitors, fuel cells, batteries, actuators, displays, antistatic coating, corrosion protection, electrochromic windows, and thermoelectric devices due to a high and quite stable conductivity and excellent ability to be rapidly switched between conducting states and insulating states, superior chemical stability and environmental stability, satisfactory optical transparency. However, The solubility of its monomer and polymer in water need be improved by addition of surfactant and introduction of pendant lyophilic groups, and flaws on the performance of PEDOT devices for practical applications in various fields need be enhanced by modification. Fortunately, the commercially water-processable PEDOT:PSS is a water-dispersible form of the intrinsically conducting PEDOT doped with the water-soluble PSS, swelling, disintegration, cracking and peeling-off of PEDOT-PSS film in water need be improved by functional modification. In our work, a variety of materials such as surfactants, carbon nanomaterials, metallic nanomaterials, clay minerals, enzymes, ionic liquid, β-cyclodextrin and prussian blue were incorporated into PEDOT by mixture or electrochemical copolymerization to improve issues mentioned-above. Meanwhile, PEDOT or PEDOT-PSS derivatives also synthesized. Subsequently, these materials and composites was employed for the architecture of efficient chemo/bio sensors and successfully realized for efficient, sensitive and selective analysis of toxic or harmful substances such as heavy metals, pesticides, food additives in agro-environment, crops or nutrients like amino acid, trace elements, vitamins, carbohydrates in agro-products and agro-food.