Colorimetric chemosensor for Zn2+ based on pyrogallol red and poly(diallyldimethylammonium chloride) in aqueous solution

J of Applied Polymer Sci

Fukushima

2019

Self Cite

A new and convenient chemosensor for detecting Ni2+ in aqueous buffer has been developed by mixing an anionic organic dye, alizarin complexone (ALC) and a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDADMAC). After addition of Ni2+, the chemosensor exhibits a remarkable bathochromic shift with a significant color change from red to blue, while other metal ions did not induce such a change. The color change may be attributed to the aggregate formation of an ALC‐based Ni2+ complex on the surface of PDADMAC. The results showed that the ALC and PDADMAC mixture can be applied to detect Ni2+ selectively with colorimetric changes. This investigation can lead to the construction of new chemosensors by facile and simple mixture of a water‐soluble dye and an oppositely charged polyelectrolyte. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47496.

Section: Introductionmentioning

confidence: 99%

Colorimetric chemosensor for Ni²⁺ based on alizarin complexone and a cationic polyelectrolyte in aqueous solution

J of Applied Polymer Sci

Fukushima

2019

Self Cite

“…Anionic dyes can interact with PDADMAC by electrostatic interactions to have the potential to form their self‐aggregate and show distinct spectroscopic and sensing properties from those of monomeric dyes . Our previous study reported that a chemosensor through the electrostatic combination of an anionic organic dye, pyrogallol red (PR), and PDADMAC exhibited a colorimetric selective detection for Zn 2+ distinct from PR . Thus, the combination of an organic dye and an oppositely charged polyelectrolyte is a useful tool for the facile preparation of a novel chemosensing system.…”

Section: Introductionmentioning

confidence: 99%

“…32,33 Our previous study reported that a chemosensor through the electrostatic combination of an anionic organic dye, pyrogallol red (PR), and PDADMAC exhibited a colorimetric selective detection for Zn 2+ distinct from www.soci.org K Inoue, S Aikawa, Y Fukushima PR. 34 Thus, the combination of an organic dye and an oppositely charged polyelectrolyte is a useful tool for the facile preparation of a novel chemosensing system. In this study, we describe the development of a colorimetric chemosensor for selective recognition of Hg 2+ over other metal ions in an aqueous solution by a simple mixture of two commercially available reagents, XB-I and PDADMAC.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Hg²⁺ using a mixture of an anionic azo dye and a cationic polyelectrolyte in aqueous solution

Fukushima

2018

Polymer International

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We investigated a colorimetric chemosensor for Hg2+ based on a mixture of xylidyl blue I as an anionic organic dye and poly(diallyldimethylammonium chloride) as a cationic polyelectrolyte in an aqueous solution at pH 7.5. The addition of Hg2+ to the mixture induced a bathochromic shift in the absorption spectra with a distinct color change from red to green which was readily identifiable by the naked eye, whereas the other metal ions gave rise to insignificant color changes. By contrast, upon adding Hg2+ to xylidyl blue I alone, the solution underwent no significant change in color. Moreover, a stoichiometric ratio for the complex between xylidyl blue I and Hg2+ in the presence of poly(diallyldimethylammonium chloride) was determined to be 1:1 by the absorption titration curve and Job's plot. Thus, the mixture can be used as a selective naked‐eye colorimetric chemosensor for Hg2+ over other common metal ions. This study raises the possibility that the combination of an organic dye and an oppositely charged polyelectrolyte is a potential candidate for the easy construction of a new chemosensor system. © 2018 Society of Chemical Industry

“…Cationic PDADMAC can interact with anionic dyes to induce dye aggregate formation, and it has the potential to exhibit spectroscopic and sensing properties . Our previous studies reported that a mixture of an anionic dye and PDADMAC showed selective colorimetric detection distinct from the original dye …”

Section: Introductionmentioning

confidence: 99%

“…25,26 Our previous studies reported that a mixture of an anionic dye and PDADMAC showed selective colorimetric detection distinct from the original dye. [27][28][29] In this study, we developed a colorimetric chemosensor for Co 2+ in a pure aqueous solution under physiological pH conditions with a mixture of 5-Br-PAPS and PDADMAC. While 5-Br-PAPS has little selectivity for Co 2+ , the resulting 5-Br-PAPS and PDADMAC mixture displayed a selective and sensitive response to Co 2+ through an obvious color change from yellow to blue.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Co²⁺ sensor based on an anionic pyridylazo dye and a cationic polyelectrolyte in aqueous solution

Sakamaki

et al. 2018

Polymer International

Self Cite

A new naked‐eye colorimetric sensor for detecting Co2+ in a pure aqueous solution at pH 7.0 was developed by mixing an anionic organic dye, 2‐(5‐bromo‐2‐pyridylazo)‐5‐(N‐propyl‐N‐sulfopropylamino)phenol (5‐Br‐PAPS) with a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDADMAC). Upon addition of Co2+, the absorption maximum exhibited a remarkable bathochromic shift from 426 to 635 nm (Δ = 209 nm) with a detectable color change from yellow, green to blue, while other metal ions did not induce such a change. The results showed that the 5‐Br‐PAPS and PDADMAC mixture can be used as a selective and sensitive naked‐eye colorimetric chemosensor for Co2+. This study afforded a simple strategy to construct a novel chemosensor by a simple mixture of an organic dye and an oppositely charged polyelectrolyte. © 2018 Society of Chemical Industry