Dicyanovinyl Appended Carbazole Based Colorimetric Sensor for Volatile Organic Amines

Abstract 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 1 H NMR titration studies. Test kit developed using probe 2 showed prominent color change in presence of biogenic amines generated from decomposed meat product.