Potentiometric Surfactant Sensor for Anionic Surfactants Based on 1,3-dioctadecyl-1H-imidazol-3-ium tetraphenylborate

Sakač, Nikola; Madunić-Čačić, Dubravka; Marković, Dean; Hok, Lucija; Vianello, Robert; Vrček, Valerije; Šarkanj, Bojan; Đurin, Bojan; Della Ventura, Bartolomeo; Velotta, Raffaele; Jozanović, Marija (2022) Potentiometric Surfactant Sensor for Anionic Surfactants Based on 1,3-dioctadecyl-1H-imidazol-3-ium tetraphenylborate. Chemosensors, 10 (12). ISSN 2227-9040

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Abstract

As anionic surfactants are used in detergents for cleaning and washing, they pose an environmental and health hazard. A novel potentiometric sensor for anionic surfactants based on the 1, 3- dioctadecyl-1H-imidazol-3-ium tetraphenylborate (DOI-TPB) ionophore is presented. The newly developed approach to DOI-TPB synthesis is faster and simpler than currently used strategies and fol-lows the green chemistry principles. DOI-TPB ionophore was characterized by computational and in-strumental techniques (NMR, LC-MS, FTIR, elemental analysis), and used to produce a PVC- based DOI-TPB sensor. The sensor showed linear response to dodecylbenzenesulfonate and dodecyl sulfate in concentration ranges of 6.3 x 10-7 – 3.2 x 10-4 M and 5.9 x 10-7 – 4.1 x 10-3 M, for DBS and SDS, re-spectively. The sensor shows Nernstian slope (59.3 mV/decade and 58.3 mV/decade for DBS and SDS, respectively), and low detection limits (7.1 x 10-7 M and 6.8 x 10-7 M for DBS and SDS, respectively). DOI-TPB sensor was successfully tested on real samples of commercial detergents and the results were in agreement with the referent methods. Computational analysis underlined the importance of long al-kyl chains in DOI+ and their C–H∙∙∙π interactions with TPB– for the ionophore formation in solution, thereby providing guidelines for the future design of efficient potentiometric sensors.

Item Type:	Article
Uncontrolled Keywords:	anionic surfactants; computational analysis; green chemistry; quaternary ammonium compounds; synthetic ionophore; potentiometric sensor
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Organic Chemistry and Biochemistry
Projects:	Project title Project leader Project code Project type In-silico potpomognut dizajn supstrata za hvatanje CO2 u katalitičkoj formaciji karbonata i karbamata Dean Marković IP-2019-04-8846 Znanstveno-istraživački projekti Dizajn, sinteza i računalna analiza novih optičkih kemijskih pH osjetilnih derivata benzazola Robert Vianello IP-2020-02-8090 Znanstveno-istraživački projekti
Depositing User:	Diana Mikoč Radešić
Date Deposited:	18 Jan 2024 15:02
URI:	http://fulir.irb.hr/id/eprint/8373
DOI:	10.3390/chemosensors10120523

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