A Naphthol and Nitroaniline‐Based Dual‐target Chemosensorfor Fluorometric Sensing of Al3+ and Colorimetric Sensing of Fe3+. Issue 32 (23rd August 2022)

• Record Type: Journal Article
• Authors: Moon, Sungjin; Lee, Minji; Kim, Cheal
• Is Part Of: ChemistrySelect. Volume 7:Issue 32(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-23
• Subjects: Aluminum ion -- Dual target chemosensor -- Ferric cation -- Naphthol -- Nitroaniline; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202201353
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A naphthol and nitro‐aniline‐based fluorometric and colorimetric chemosensor BHMN, 1, 1‐bis(2‐((( E )‐(2‐hydroxy naphthalene‐1‐yl)methylene)amino)ethyl)‐3‐(4‐nitrophenyl)thiourea, was synthesized. Sensor BHMN detected Al 3+ with fluorescence turn‐on and Fe 3+ via color variation of colorless to purple. Binding ratios of BHMN to Al 3+ and Fe 3+ turned out to be 1 : 1. Detection limits for Al 3+ and Fe 3+ by BHMN were analyzed to be 8.22 μM and 3.10 μM. Additionally, the naked‐eye test strip was applied for sensing Fe 3+ and showed that BHMN could effectively discriminate Fe 3+ from Fe 2+ and other cations. The binding mechanisms of BHMN to Al 3+ and Fe 3+ were identified by ESI‐mass, Job plot, NMR titration, and DFT calculations. Abstract : A fluorometric and colorimetric chemosensor BHMN, 1, 1‐bis(2‐((( E )‐(2‐hydroxy naphthalene‐1‐yl)methylene)amino)ethyl)‐3‐(4‐nitrophenyl)thiourea, was developed for the detection of Al 3+ with fluorescence turn‐on and Fe 3+ via color variation of colorless to purple. Detection limits for Al 3+ and Fe 3+ by BHMN were analyzed to be 8.22 μM and 3.10 μM, respectively. The naked‐eye test strip was applied for sensing Fe 3+ and showed that BHMN could effectively discriminate Fe 3+ from Fe 2+ and other cations.