Mechanochromic Phenomenon of Dihydropyrimidine and Chemosensing Detection of Cr6+ and Mn7+ in Aqueous Media
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Detection of metal ions associated with environmental pollutants using simple and efficient techniques has gained significant attention due to their scientific applications. In the present study, a Tetraphenylethene (TPE)-Based aggregation-induced emission luminogen (AIEgen), designated as A-TPE (A- AIE), was designed and synthesised for selective sensing of hazardous metal ions. The synthesized TPE-Based probe prominently explores the AIEgen property and mechanochromic luminescence, with distinguishable colour changes upon mechanical stimulation. A-TPE shows maximum emission at 474 nm upon excitation at 380 nm. Further, the developed dihydropyrimidine is based on (A-TPE) (A-AIE) chemosensor employed for the selective, sensitive and naked eye detection of the chromium (Cr 6+) and Manganese (Mn 7+) metal ions. A-TPE showed good linear response in the range of 0 to 18 μg/mL with a low limit of detection of 6.69 and 12.75 μg/mL, respectively. In addition, the A-TPE probe displayed good recovery for different environmental samples. The present work demonstrates the potential of A-TPE based AIE-gen probe for analytical and environmental applications.
