Colorimetric detection of Cu2+ using of a mixture of ponceau 6R and a cationic polyelectrolyte in aqueous solution

Autor:	Shunichi Aikawa, Yasumasa Fukushima
Rok vydání:	2021
Předmět:	Aqueous solution Metal ions in aqueous solution Inorganic chemistry Cationic polymerization General Chemistry Ponceau 6R Condensed Matter Physics Polyelectrolyte Job plot chemistry.chemical_compound chemistry Hypsochromic shift Titration Food Science
Zdroj:	Journal of Inclusion Phenomena and Macrocyclic Chemistry. 100:143-148
ISSN:	1573-1111 1388-3127
Popis:	A colorimetric chemosensor is reported for Cu2+ by a simple mixture of two commercially available reagents, ponceau 6R (P6R) and poly(diallyldimethylammonium chloride) (PDADMAC) in an aqueous solution. P6R interacted electrostatically with PDADMAC to form the self-aggregate of P6R and exhibit a different sensing capability from P6R alone. The mixture showed high sensitivity and specific selectivity for detection of Cu2+ compared with various physiological and environmentally important metal ions. The addition of Cu2+ caused a hypsochromic shift with a distinct color change from red to yellow. While, upon adding Cu2+ to P6R alone, the solution underwent no distinct color change. The binding mode of P6R with Cu2+ was determined to be a 2:1 stoichiometry from Job plot and Cu2+ titration experiments. The results provide an easy method for developing new colorimetric sensors for metal ions by a combination of anionic dyes and cationic polyelectrolytes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ae7f8e53d6d7ea9f9d6c612863a052ff https://doi.org/10.1007/s10847-021-01064-8 Zobrazit plný text záznamu Full text from SpringerLink