大连海事大学学报 >

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

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

材料

新型高强度荧光水凝胶探针的制备及铁离子检测

  • 吴启笛 ,
  • 朱金妹 ,
  • 严亮 ,
  • 王沛
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  • (大连海事大学 交通运输工程学院，辽宁 大连 116026)
吴启笛（1994 — ），女，硕士生，研究方向：高分子材料.

收稿日期: 2021-01-31

  修回日期: 2021-03-04

  网络出版日期: 2021-03-04

基金资助

大连市科技创新基金项目（2020JJ26GX042).

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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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摘要

为制备具有优异力学性能的荧光水凝胶，以丙烯酰胺（AM）、聚乙二醇（PEG）和双丙烯酰氧基荧光素（BAcF）为原料，N，N′-亚甲基双丙烯酰胺，过硫酸铵-四甲基乙二胺（APS-TEMED）为氧化还原引发体系，通过自由基聚合制备了P（BAcF-AM）/PEG水凝胶.对单体和凝胶的结构进行了红外、核磁表征，考察AM浓度、PEG添加量对水凝胶力学性质的影响.结果表明，PEG的加入明显提高了水凝胶的力学性能，当PEG的添加量为AM质量的8%时，水凝胶的拉伸强度达到0.45 MPa，应变达到1190%. 同时，该水凝胶在365 nm紫外灯下显现明亮的绿色荧光，并且对水中的一定浓度范Χ内的Fe3+具有显著的荧光猝灭响应，可以作为潜在的便携式荧光探针材料，检测水中金属离子的浓度.

关键词： 荧光水凝胶; 聚乙二醇; 力学性能; 铁离子检测

本文引用格式

吴启笛 , 朱金妹 , 严亮 , 王沛 . 新型高强度荧光水凝胶探针的制备及铁离子检测[J]. 大连海事大学学报, 2021 , 47(3) : 125 -130 . DOI: 10.16411/j.cnki.issn1006-7736.2021.03.016

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

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