Increasing concerns about our environment raise the need for development of sensitive, fast, portable, and cheap analytical methods. We seek to prepare highly-sensitive nanostructured biosensors for chemical and biochemical sensors. By using layer-by-layer assembly techniques, different types of enzymes with high biorecognition and quantum dots with unique optical properties are integrated into the same nanostructured film. Compared with conventional detection methods, these nanostructured films exhibit similar or even higher sensitivity towards different types of pesticide residues. Furthermore, these nanostructured sensors show satisfactory selectivity and sensitivity when used in real samples, which shed light on the practical application of the self-assembly nanostructures in the field of environmental monitoring.

Self-assembled nanostructured film of enzyme and quantum dots for pesticide sensors

243rd National Meeting (2012)

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