Peptoid Functionalized Nanoparticles for In-Line Contaminant Sensing

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Presentation transcript:

Peptoid Functionalized Nanoparticles for In-Line Contaminant Sensing Student: Benjamin Howell Mentor: Drs. Shannon Servoss, Lauren Greenlee (CHEG) Undergraduate: Ohio University / Chemical & Bimolecular Engineering Biological Sensors Background/Relevance Peptoids with certain arrangements of side chains have been shown to bind to various heavy metal and halogen contaminants with high specificity. Nanoparticles (NPs) can be functionalized with peptoids to create peptoid-functionalized NPs (FNPs). These can be used along with characterization tools to create a sensor that can detect these contaminants quickly and efficiently. Innovation Functionalize nanoparticles using peptoids with specific side chains and investigate property changed as a function of contamination. Find specific side chain arrangements to bind to contaminants. Approach Synthesize peptoids that bind to specific contaminants. Functionalize NPs with peptoids to get FNPs. Examine how FNPs interact with cadmium. Examine properties of contaminant solutions before and after treatment with PNPs to confirm a removal of contaminants. Examine properties of PNP solution before and after treatment to measure common characterization tests as a function of concentration. Examine PNPs and solution of multiple contaminants to confirm specificity of results. Conclusions Key Results Peptoid synthesized and purified for functionalization trials NPs functionalized with peptoid. FNPs shown to exhibit time and concentration dependent up-shift in UV-Vis spectra upon contamination with cadmium. The change in FNPs’ spectra may be used to determine an unknown concentration of cadmium This will allow sensing methods to be devised that do not rely on the use of expensive technical equipment, allowing previously unable communities to gain access to simple water testing. Acknowledgements to Dr. Shannon Servoss, Dr. Lauren Greenlee, Jesse Roberts, German Perez Bakovic, and Prashant Acharya for their help in and out of the lab. Research Funded by National Science Foundation REU Grant # EEC-1359306 Summer 2016