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Updated: May 27, 2025

Spectral Confocal Imaging of Fluorescently tagged Nicotinic Receptors in Knock-in Mice with Chronic Nicotine Administration
Published on: February 10, 2012
Development of amide-based molecular cages for the highly selective and sensitive detection of nicotine
Mina Bagherifard1, Amrit Kaur1, Kamal E S Nassar1
1Department of Chemistry, University of South Florida, Tampa, Florida 33620, USA. spanopoulos@usf.edu.
Abstract:
Nicotine is a harmful sympathomimetic drug associated with serious health issues. Herein, a novel amide-based bistren-type cage, BiP-Am, has been developed for the selective fluorescence-based sensing of nicotine in human urine samples and cigarettes. The corresponding detection limit features a value of 0.4 nM, among the best reported in the literature. Selectivity experiments demonstrate that BiP-Am can efficiently detect nicotine in the presence of multiple interfering analytes such as sodium, potassium, urea and uric acid. A plausible mechanism has been proposed herein, revealing that nicotine is showing an inner-filter effect quenching the BiP-Am fluorescence emission. Our strategy poses a facile and versatile method for nicotine detection in portable applications.
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