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Fluorescence Resonance Energy Transfer Based MCM-EDTA-Tb3+-MES Sensor

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Abstract:

An in situ mesopourous surface imprinted polymeric (SIP) sensor was synthesized for a highly sensitive, selective, and kinetically faster detection of the high-vapor-pressure nerve gas surrogate methyl salicylate (MES). Visual detection occurred on the filtrate thin films at 25 pM. Other nerve gas surrogates, TP, DMP, DMMP, PMP, and 1,4-thioxane, were tested and showed a decrease in sensitivity compared to MES. In addition, 2,6-dipicolinic acid (DPA), a biological indicator, was also investigated and showed a decrease in sensitivity compared to MES. Finally, the detection plateau was reached at 40 s and at 1.5 × 10−4 M from pH 6–11.

Keywords: FLUORESCENCE RESONANCE ENERGY TRANSFER; FRET; MCM SILICA; METHYL SALICYLATE; NERVE GAS SURROGATE DETECTION; SIP; SURFACE IMPRINTED POLYMERIC SENSORS; TB3+

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370208784658101

Affiliations: 1: U.S. Army Engineer Research and Development Center, Topographic Engineering Center, Alexandria, Virginia 22315 2: Virginia Commonwealth University Dept. of Chemistry, Richmond, Virginia 23284 3: University of California, Materials Research Laboratory, Santa Barbara, California 93106 4: Sentor Technologies Inc., 11551 Nuckols Road, Suite Q, Glen Allen, Virginia 23060

Publication date: June 1, 2008

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