A rhodamine B‐based colorimetric chemosensor for sensitive and selective detection of Cu2+: Test strip analysis and density functional theory. (22nd July 2022)

• Record Type: Journal Article
• Authors: Heo, Jae Sung; Gil, Dongkyun; Lee, Jae Jun; Kim, Cheal
• Is Part Of: Coloration technology. Volume 139:Number 1(2023)
• Page Start: 4
• Page End: 15
• Publication Date: 2022-07-22
• Subjects: Color -- Periodicals; Color in the textile industries -- Periodicals; Dyes and dyeing -- Periodicals; 667
• DOI: 10.1111/cote.12633
• Languages: English
• ISSNs: 1472-3581

Abstract

Abstract: We designed a rhodamine B‐based colorimetric chemosensor BHSO ((Z)‐3′, 6′‐bis(diethylamino)‐2‐(2‐(((8‐hydroxy‐2, 3, 6, 7‐tetrahydro‐1H, 5H‐pyrido[3, 2, 1‐ij]quinolin‐9‐yl)methylene)amino)ethyl)spiro[isoindoline‐1, 9′‐xanthen]‐3‐one) for detecting Cu 2+ . In the presence of Cu 2+, BHSO caused a colour variation from colourless to bright orange. The limit of detection for Cu 2+ towards BHSO was 0.73 μM. The binding of BHSO to Cu 2+ was analysed as a 1:1 ratio through a Job plot and electrospray ionisation mass spectrometry. BHSO can detect readily Cu 2+ with a test strip by colorimetric variation. The detecting process of Cu 2+ by BHSO was represented by ultraviolet‐visible titration, electrospray ionisation mass spectrometry, proton nuclear magnetic resonance titration, Job plot and density functional theory calculations .