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Chemical Sensors

Nanomaterials for Selective Preconcentration (271)

Problem: Need materials that rapidly capture and tightly bind target analytes with good chemical selectivity and stability

Graphic representation of selective monolayer chemistry for highly selective sorption

Project Activity Scope (from Technical Overview Chart): Mechanisms through Sensors and Devices

PNNL Solution:

  • Previous preconcentrator materials were often slow, leachable, and not very selective
  • PNNL developed selective monolayer chemistry for highly selective sorption
  • Embedding the self-assembled monolayers into nanoporous ceramic matrices provided significant improvement, both in terms of chemical selectivity and binding efficiency
  • High binding affinities (104 to 108) for target analytes demonstrated in the lab

Capabilities Employed to Meet Client Needs: Organic synthesis, molecular self-assembly; templated synthesis of nanoporous ceramics; nano-technology; surface chemistry; glass chemistry; separations chemistry and processes; material sciences including polymers and ceramics; materials synthesis and performance evaluation.

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Contact: Glen E. Fryxell

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