Pyrene-based chemosensor detects picric acid upto attogram level through aggregation enhanced excimer emission |
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| Authors: | Rakesh Chopra Paramjit Kaur Kamaljit Singh |
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| Institution: | Department of Chemistry, UGC-Centre for Advanced Studies-I, Guru Nanak Dev University, Amritsar 143005, India |
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| Abstract: | A pyrene-based small molecular weight probe, exhibiting aggregation enhanced excimer emission has been synthesized. The crystalline emissive form detects 2,4,6-trinitrophenol (picric acid) at parts-per-billion concentration in solution and as low as 0.46 attogram in direct contact mode, operating predominantly in a static quenching mechanism, proposed on the basis of steady state and life-time fluorescence measurements. |
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| Keywords: | Crystalline nanoaggregates Aggregation enhanced excimer emission Picric acid Attogram Soil samples |
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