Cavitands: Molecules With Enhanced Selectivity for Chem/Bio Detection

Abstract

The selective response of supramolecular structures, cavitands, is demonstrated using a sensitive optical transduction scheme, surface plasmon resonance (SPR). The methylene bridged cavitands (MeCav) with shallow cavities do not complex aromatic vapors, the pyrazine bridged cavitands (PzCav) show intermediate selectivity whereas the quinoxaline bridged cavitands (QxCav) with the deepest cavities show the best selectivity for aromatic vapors. A comparison with polymer sensing layers, PECH and PIB, shows cavitands are more selective although the polymer layers were more than twice the thickness of spin coated cavitand layers. Cavitands are therefore promising materials for the selective detection of CW agents.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2005
Accession Number
ADA449775

Entities

People

  • Devanand K. Shenoy

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Abstracts
  • Chemical Detectors
  • Detection
  • Detectors
  • Materials
  • Measurement
  • Molecules
  • Pattern Recognition
  • Plasmons
  • Polymers
  • Quartz Crystal Microbalances
  • Recognition
  • Refractive Index
  • Resonance
  • Surface Plasmon Resonance
  • Surface Plasmons
  • Warning Systems

Fields of Study

  • Chemistry

Readers

  • Aerospace Engineering
  • Nanoscale Plasmonic Nanotechnology
  • Polymer Science and Technology