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

Abstract

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.

Quantum dots incorporated magnetic nanoparticles for imaging colon carcinoma cells

“…New synthesis method for fluorescent-magnetic nanocomposites structure were prepared based on simple and efficient LbL self-assembly method [24]. Briefly, 100 ml Fe 3 O 4 NPs were dispersed in 5 ml of CTAB (10 mg/ml) solution under vagarious stirring.…”

Highly Sensitive Fluorescent Probes for the Quantitative Determination of Singlet Oxygen (1O2)

“…Layer by Layer (LbL) technology is advancing in such a way that they are becoming more portable, tunable, reliable and cheaper way for wide range of sensing applications. 13 In this manuscript, we report on a highly sensitive fluorescence probe for the detection of ultra-low amounts of …”