Preparation of a novel high strength fluorescent hydrogel sensor and detection of Fe 3+ ion

WU Qi-di; ZHU Jin-mei; YAN Liang; WANG Pei

doi:10.16411/j.cnki.issn1006-7736.2021.03.016

Journal of Dalian Maritime University >

2021 , Vol. 47 >Issue 3: 125 - 130

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2021.03.016

Preparation of a novel high strength fluorescent hydrogel sensor and detection of Fe ³⁺ ion

WU Qi-di ,
ZHU Jin-mei ,
YAN Liang ,
WANG Pei

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(College of Transportation Management , Dalian Maritime University, Dalian 116026, China)

Received date: 2021-01-31

Revised date: 2021-03-04

Online published: 2021-03-04

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Abstract

To prepare fluorescent hydrogels with excellent properties, P(BAcFAM)/PEG was prepared by free radical solution polymerization with acrylamide（AM）, PEG and bisacryloxyfluorescein (BAcF) as raw material and N,N′methylene bisacrylamide, ammonium persulfateN,N,N′,N′tetramethylethylenediamine（APSTEMED）as redox initiator. The structure of monomer and gel were characterized by FTIR and 1HNMR, and the effects of the concentration of AM and amounts of PEG on mechanical properties of hydrogels was studied. The results show that the mechanical properties of the hydrogels are significantly improved by the addition of PEG. When the amount of PEG added is 8% of AM mass, the tensile strength of the hydrogel reaches up to 0.45 MPa, and the strain is about 1190%. At the same time, the hydrogel show bright green fluorescence under 365 nm ultraviolet lamp, and obviously quenches in a certain concentrations range of Fe3+ in water, which can be used to detect the concentration of Fe3+ ions in water as a portable fluorescent probe.

Key words： fluorescent hydrogel; PEG; mechanical properties; detection of iron ions

Cite this article

WU Qi-di , ZHU Jin-mei , YAN Liang , WANG Pei . Preparation of a novel high strength fluorescent hydrogel sensor and detection of Fe ³⁺ ion[J]. Journal of Dalian Maritime University, 2021 , 47(3) : 125 -130 . DOI: 10.16411/j.cnki.issn1006-7736.2021.03.016

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