A nicotinic receptor optical biosensor

Kim R. Rogers, Mohyee E. Eldefrawi, David P Richman

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


Neurotransmitter receptor proteins are excellent candidates as sensing elements in biosensors because of their high affinity and selectivity for sepcific ligands. They can recognize families of chemicals of physiological, pharmacological and toxicological significance, that range from amino acids and peptides to therapeutics, drugs of abuse and toxicants. Although optic immunosensors which make use of total internal reflection fluorescence (i.e. evanescence) have been initially used in immunochemical biosensors (1,2), evanescent fluorosensors, with an appropriate indicator chemistry, can also provide a sensitive and stable transducer for a receptor-based biosensor (3). In this receptor-optical sensor, the incident light excites a fluorophore just outside the waveguide boundary (approximately 1000 Å), then a portion of the resultant fluoroescence becomes trapped and is transmitted back up the fiber. This technique is well suited to a receptor-based or immunochemical biosensor because the fluorescently-tagged ligand, or antibody bound to the receptor protein, which is immobilized at the fiber surface, can be monitored without interference from the ligand in bulk solution.

Original languageEnglish (US)
Title of host publicationBiosensor Technology
Subtitle of host publicationFundamentals and Applications
PublisherCRC Press
Number of pages8
ISBN (Electronic)9781351463706
ISBN (Print)9780824784140
StatePublished - Jan 1 2017
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)


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