TY - JOUR
T1 - Immediate detection of Co2+ by a phthalazine-based colorimetric chemosensor
AU - Heo, Jae Sung
AU - Kim, Cheal
N1 - Publisher Copyright:
© 2021 Society of Dyers and Colourists
PY - 2022/4
Y1 - 2022/4
N2 - We designed a colorimetric chemosensor based on phthalazine ((E)-9-((2-(phthalazin-1-yl)hydrazono)methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinoline-8-ol), denoted HPJ, for detecting Co2+. In the presence of Co2+, HPJ undergoes a colour variation from yellow to dark pink. Analysis of a Job plot and electrospray ionisation-mass spectra enabled the binding mode of HPJ to Co2+ to be determined as a 1:1 ratio. The detection limit of Co2+ with HPJ was 1.74 μM. In addition, the feasibility of using HPJ in the form of a test strip was confirmed. The sensing process of Co2+ by HPJ was monitored by using a Job plot, proton nuclear magnetic resonance titration, electrospray ionisation-mass spectrometry and ultraviolet-visible titration.
AB - We designed a colorimetric chemosensor based on phthalazine ((E)-9-((2-(phthalazin-1-yl)hydrazono)methyl)-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinoline-8-ol), denoted HPJ, for detecting Co2+. In the presence of Co2+, HPJ undergoes a colour variation from yellow to dark pink. Analysis of a Job plot and electrospray ionisation-mass spectra enabled the binding mode of HPJ to Co2+ to be determined as a 1:1 ratio. The detection limit of Co2+ with HPJ was 1.74 μM. In addition, the feasibility of using HPJ in the form of a test strip was confirmed. The sensing process of Co2+ by HPJ was monitored by using a Job plot, proton nuclear magnetic resonance titration, electrospray ionisation-mass spectrometry and ultraviolet-visible titration.
UR - http://www.scopus.com/inward/record.url?scp=85114116382&partnerID=8YFLogxK
U2 - 10.1111/cote.12580
DO - 10.1111/cote.12580
M3 - Article
AN - SCOPUS:85114116382
SN - 1472-3581
VL - 138
SP - 168
EP - 175
JO - Coloration Technology
JF - Coloration Technology
IS - 2
ER -