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Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes
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Supramolecular sensing with phosphonate cavitands.

Roberta Pinalli1, Enrico Dalcanale

  • 1Dipartimento di Chimica and INSTM, UdR Parma, Università di Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.

Accounts of Chemical Research
|October 2, 2012
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Summary
This summary is machine-generated.

This study presents highly selective supramolecular sensors using phosphonate cavitands for detecting specific analytes. These sensors overcome challenges in real-world applications by effectively transferring molecular recognition from solution to interfaces.

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Area of Science:

  • Supramolecular chemistry
  • Chemical sensing
  • Materials science

Background:

  • Molecular recognition is key for selective chemical sensing, driven by advances in synthetic receptors.
  • A gap exists between receptor capabilities and real-world sensor performance due to interface transfer and transduction challenges.

Purpose of the Study:

  • To overcome bottlenecks in transferring molecular recognition to interfaces for practical sensor applications.
  • To develop highly selective supramolecular sensors using phosphonate cavitands.

Main Methods:

  • Utilized phosphonate cavitands as receptors for molecular recognition.
  • Implemented vapor-solid interface strategies with photoinduced charge transfer for alcohol detection.
  • Developed liquid-solid interface sensors by grafting cavitands onto surfaces for sarcosine detection in urine.

Main Results:

  • Achieved selective detection of short-chain aliphatic alcohols in the vapor phase by distinguishing specific from nonspecific interactions.
  • Demonstrated selective detection of sarcosine in urine using surface-grafted cavitands and microcantilever or fluorescence dye displacement detection.
  • Overcame challenges in interface integration and transduction for enhanced sensor performance.

Conclusions:

  • Phosphonate cavitands enable the development of highly selective supramolecular sensors.
  • Strategies for interface integration and transduction are crucial for real-world sensor applications.
  • These sensors show promise for detecting specific analytes like alcohols and biomarkers such as sarcosine.