Journal
ACS SENSORS
Volume 1, Issue 7, Pages 842-846Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.6b00209
Keywords
ricin; surface-enhanced raman spectroscopy; glycopolymers; film over nanospheres; DFT modeling
Funding
- National Science Foundation through the University of Minnesota Materials Science Research and Engineering Center [DMR-1420013]
- NSF through the MRSEC program
- NSF through the NNIN program
- NSF GRFP [DGE-1324585]
- MRSEC program at Northwestern University [DMR-1121262]
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A novel sensing scheme is exemplified through the detection of ricin B-chain (RBC) in water and liquid food matrices: surface-enhanced Raman spectroscopy (SERS) coupled with an N-acetyl-galactosamine glycopolymer capture layer. The sensing scheme's detection limit was well below that of the predicted oral exposure limit. Theoretical predictions of the normal Raman spectrum of the glycomonomer give insight into polymer-RBC intermolecular interactions.
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