A colorimetric chemosensor for distinct color change with (E)-2-(1-(3-aminophenyl)ethylideneamino)benzenethiol to detect Cu2+ in real water samples
Chemosensor; Colorimetry; DFT studies; Schiff base; Water samples
The study reports the synthesis of chemosensor (E)-2-(1-(3-aminophenyl)ethylideneamino)benzenethiol (C1), a highly sensitive, colorimetric metal probe that shows distinct selectivity for the detection of Cu2+ ion in various real water samples. Upon complexation with Cu2+ in CH3OH/H2O (60:40 v/v) (aqueous methanol), the C1 demonstrate significant enhancement in the absorption at 250nm and 300nm with a color change from light yellow to brown which was visualized using naked-eye. Therefore, these properties make C1 as an effective candidate for on-site Cu2+ ions detection. The emission spectrum of C1 illustrated TURN-ON recognition of Cu2+ with a limit of detection (LOD) of 46nM. Furthermore, Density Functional Theory (DFT) calculations were performed to better understand the interactions between C1 and Cu2+. The obtained results suggested that the electron clouds present around the NH2 innitrogen and sulfur in SH play a pivotal role in the formation of a stable complex. The computational results were in good agreement with the experimental UVvisible spectrometry results. Graphical abstract: [Figure not available: see fulltext.] 2023, The Author(s), under exclusive licence to The Japan Society for Analytical Chemistry.
Patil N.; Dhake R.B.; Phalak R.; Fegade U.; Inamuddin; Naushad M.; Bathula C.; Kanchi S.; Govender K.
Analytical Sciences, Vol-39, No. 8, pp. 1413-1423.
ISSN: 9106340; PubMed ID: 37280486; CODEN: ANSCE
https://doi.org/10.1007/s44211-023-00355-z https://www.scopus.com/inward/record.uri?eid=2-s2.0-85160933423&doi=10.1007%2fs44211-023-00355-z&partnerID=40&md5=b1ff4230be21abf2ed537c6e61f3854a
Patil N., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India, Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, MH, Jalgaon, 425201, India; Dhake R.B., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India; Phalak R., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India; Fegade U., Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, MH, Jalgaon, 425201, India; Inamuddin, Advanced Functional Materials Laboratory, Department of Applied Chemistry, Zakir Husain College of Engineering and Technology, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India; Naushad M., Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Saudi Arabia; Bathula C., Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, 04620, South Korea; Kanchi S., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560 029, India; Govender K., Department of Chemical Sciences, Doornfontein Campus, University of Johannesburg, P. O. Box 17011, Johannesburg, 2028, South Africa, National Institute for Theoretical and Computational Sciences (NITheCS), Stellenbosch, South Africa