Triptycene-Derived Photoresponsive Fluorescent Azo-Polymer as Chemosensor for Picric Acid Detection.

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ID: 24344
2019
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Abstract
Two new triptycene-based azobenzene-functionalized polymers () have been synthesized using the well-known Pd-catalyzed Sonogashira cross-coupling polycondensation reaction between 2,6-diethynyltriptycene and ( or ) dibromo-azobenzenes. Enhancement of the fluorescent emission intensity was observed upon trans → cis isomerization of -N=N- linkage in . The cis-lifetime of is rather long (greater than 2 days). The resulting materials were tested as a potential chemosensor for the detection of picric acid (PA)-a water pollutant as well as chemical constituent of explosives used in warfare. PA was found to interact strongly with , which led to significant quenching of the latter's fluorescence emission intensities. The binding constants are in the order of 10 M. were also able to detect PA in nanomolar concentrations.
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ansari2019triptycenederivedacs Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mosim Ansari, Ranajit Bera, Snehasish Mondal, Neeladri Das
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Journal ACS omega
Year 2019
DOI
10.1021/acsomega.9b00497
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Keywords Keywords not found

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