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Merocyanine-Benzothiazole Chromophore-based sensor for selective picric acid detection

Show simple item record Jawale-Patil, P.D. Wagalgave, S.M. Ingle, R.D. Nanubolu, J.B. Bhosale, R.S. Bhosale, Sidhanath V. Pawar, R.P. Bhosale, S.V. 2019-09-17T04:41:42Z 2019-09-17T04:41:42Z 2019
dc.identifier.citation ChemistrySelect. 4(34); 2019; 10013-10020. en_US
dc.description.abstract We report synthesis of (2E,4E)-2-(benzo[d]thiazol-2-yl)-4-(1,3,3-trim ethylindolin-2-ylidene) but-2-enenitrile (MC-BTH-1) chromophore and employed for picric acid sensing. MC-BTH-1 was prepared by Knoevenagel condensation of 2-(benzo[d]thiazol-2-yl) acetonitrile and (Z)-2-(1,3,3-trimethylindolin-2-ylidene)acetaldehyde in the presence of catalytic amount of piperidine in dry ethanol. The MC-BTH-1 conjugate displayed a remarkable sensing property towards picric acid in presence of interfering nitroaromatic compounds. The sensing of nitroaromatic compounds was investigated by means of UV-vis absorption, fluorescence and Sup(1) H NMR spectroscopic. Furthermore, colorimetric visualization of receptor MC-BTH-1 with the addition of various analytes under 365-nm UV light shows only color change from green to dark green for 2,4,6-trinitrophenol (TNP) and no significant color change was observed for other analytes. Under optimized condition the detection limit towards TNP and 2,4-dinitrophenol (DNP) are 1.58x10 sup(-9) M and 1.48x10 sup(-9) M, respectively. These results clearly show high sensitivity of system at low concentration with fluorescence quenching quantum efficiency approx. 88 percent. en_US
dc.publisher Wiley en_US
dc.subject Chemistry en_US
dc.title Merocyanine-Benzothiazole Chromophore-based sensor for selective picric acid detection en_US
dc.type Journal article en_US
dc.identifier.impf y

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