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Mixed polymeric micelles as a multifunctional visual thermosensor for the rapid analysis of mixed metal ions with Al3+ and Fe3+†
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-06-20 00:00:00 , DOI: 10.1039/c8nj01917g
Juan Han 1, 2, 3, 4 , Yunfeng Cai 1, 2, 3, 4 , Yun Wang 2, 3, 4, 5 , Xiaohui Dai 2, 3, 4, 5 , Lei Wang 2, 3, 4, 5 , Chunmei Li 2, 3, 4, 5 , Baodong An 2, 3, 4, 5 , Liang Ni 2, 3, 4, 5
Affiliation  

A novel type of responsive mixed double hydrophilic block copolymer (DHBC)-based multifunctional visual thermosensor (with mixed copolymers of poly(ethylene oxide)-b-poly(N-isopropylacrylamide-co-2,4-methacryloyl benzaldehyde oxime), (PEG-b-P(NIPAM-co-BDMa)) and poly(ethylene oxide)-b-poly(N-isopropylacrylamide-co-rhodamine 6G methyl acrylic acid) (PEG-b-P(NIPAM-co-Rh6GEMa))), for the detection of Al3+ and Fe3+ was designed and synthesized based on reversible addition–fragmentation chain transfer (RAFT) polymerization. Studies on the sensing processes showed that the multifunctional visual thermosensor has excellent selectivity for Al3+ and Fe3+ ions over many environmentally relevant ions, and high sensitivity with a detection limit on the nanomolar scale. Moreover, the multifunctional visual thermosensor can form micelles with (P(NIPAM-co-BDMa)/P(NIPAM-co-Rh6GEMa)) blocks as the cores and well-solvated PEG blocks as the coronas upon an increase in the temperature, which can enhance the detection sensitivity of Al3+ and Fe3+ ions. The detection limits using 0.05 g L−1 mixed micelles for the analysis of Al3+ and Fe3+ ions decreased from ∼5.95 to ∼4.02 nM, and ∼30.30 nM to ∼23.84 nM, respectively, upon changing the temperature from 25 °C to 40 °C. Furthermore, the mixed micelles in combination with Principal Component Analysis (PCA) and linear regression analysis to establish prediction models were used to achieve the successful quantitative detection of the mixed ions with Al3+ and Fe3+.

中文翻译:

混合聚合物胶束作为多功能可视热传感器,用于快速分析Al 3+和Fe 3+ †中的混合金属离子

一种新的类型的响应混合双亲水性嵌段共聚物(DHBC)的多官能的基于视觉感温(与聚的混合共聚物(环氧乙烷) - b -聚(Ñ -isopropylacrylamide--2,4-甲基苯甲醛肟),(PEG - b -P(NIPAM--BDMa))和聚(环氧乙烷) - b -聚(ñ -isopropylacrylamide--Rhodamine 6G甲基丙烯酸)(PEG- b -P(NIPAM--Rh6GEMa))) ,用于检测Al 3+和Fe 3+是基于可逆加成-断裂链转移(RAFT)聚合设计和合成的。对传感过程的研究表明,该多功能视觉热传感器对Al 3+和Fe 3+离子具有比许多与环境有关的离子优良的选择性,并且具有纳摩尔级检测极限的高灵敏度。此外,多功能视觉热传感器可在温度升高时以(P(NIPAM- co -BDMa)/ P(NIPAM- co -Rh6GEMa))嵌段为核心,而溶剂化良好的PEG嵌段则为电晕,从而形成胶束。可以提高Al 3+和Fe 3+离子的检测灵敏度。使用0.05 g L -1的检测限将温度从25°C更改为40°C时,用于分析Al 3+和Fe 3+离子的混合胶束分别从约5.95 nM降低至约4.02 nM,从30.30 nM降低至23.84 nM。此外,将混合胶束与主成分分析(PCA)和线性回归分析相结合以建立预测模型,从而成功地定量检测了Al 3+和Fe 3+的混合离子。
更新日期:2018-06-20
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