Optical and electrical nano eco-sensors using alternative deposition of charged layer

• Published in: Frontiers of Materials Science Vol. 5; no. 1; pp. 40 - 49
• Main Authors: Ahmed, Syed Rahin, Hong, Seong Cheol, Lee, Jaebeom
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Higher Education Press 01.03.2011
• Subjects: Chemistry and Materials Science; Materials Science; Review Article; 农药检测; 分子水平; 沉积层; 纳米传感器; 纳米光学; 荧光材料; layer by layer (LBL); electrochemistry; pesticides; fluorescence
• ISSN: 2095-025X; 2095-0268; 1673-7482
• DOI: 10.1007/s11706-011-0117-5

This review focuses on layer by layer （LBL） assembly-based nano ecological sensor （hereafter, eco-sensor） for pesticide detection, which is one of the most versatile methods. The effects of pesticides on human health and on the environment （air, water, soil, plants, and animals） are of great concern due to their increasing use. We highlight two of the most popular detecting methods, i.e., fluorescence and electrochemical detection of pesticides on an LBL assembly. Fluorescence materials are of great interest among researchers for their sensitivity and reliable detection, and electrochemical processes allow us to investigate synergistic interactions among film components through charge transfer mechanisms in LBL film at the molecular level. Then, we noted some prospective directions for development of different types of sensing systems.