S. Arunkumar, Gokul Raj Mini Rajendran, Aniket Chowdhury, George Rajendra Kumar
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Dicyanovinyl Appended Carbazole Based Colorimetric Sensor for Volatile Organic Amines
Herein we report synthesis, photophysical properties and amine sensing applications of a carbazole-dicyanovinyl based sensor (2). Sensor molecule 2 shows solid state fluorescence (φ=~41 %), mechanochromic fluorescence and aggregation induced emission. Presence of donor and acceptor groups in 2 resulted in strong absorption bands in the visible region of electromagnetic spectrum which is exploited for colorimetric sensing of primary amines. Amine sensing mechanism of 2 is established using 1H NMR titration studies. Test kit developed using probe 2 showed prominent color change in presence of biogenic amines generated from decomposed meat product.
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