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MOLECULES · 2019 ·Vol. 24 ·期 3 ·420 · IF 3.06

An Enantioselective Potentiometric Sensor for 2-Amino-1-Butanol Based on Chiral Porous Organic Cage CC3-R

Bang-Jin Wang,Ai-Hong Duan,Jun-Hui Zhang,Sheng-Ming Xie,Qiu-E Cao,Li-Ming Yuan

Porous organic cages (POCs) have attracted extensive attention due to their unique structures and tremendous application potential in numerous areas. In this study, an enantioselective potentiometric sensor composed of a polyvinyl chloride (PVC) membrane electrode modified with CC3-R POC material was used for the recognition of enantiomers of 2-amino-1-butanol. After optimisation, the developed sensor exhibited enantioselectivity towardS-2-amino-1-butanol (logKS,RPot= −0.98) with acceptable sensitivity, and a near-Nernstian response of 25.8 ± 0.3 mV/decade within a pH range of 6.0–9.0.Keywords:enantioselective potentiometric sensor;2-amino-1-butanol;chiral porous organic cage;CC3-R;PVC membrane electrode

研究领域: 分析化学 · 材料科学 · 生物化学

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JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY · 2020 · IF 1.701

Potentiometric microsensor based on ion-imprinted polymer for the trace determination of cesium(I) ions

Long Wang,Zhiming Wang,Cuo Zhou,Weijun Song,Chunyan Sun

A cesium potentiometric microsensor based on magnetic ion-imprinted polymer (MIIP) has been developed for Cs(I) sensing. The core-shell structure Cs(I)-MIIP was synthesized by surface-imprinting technique, using functionalized magnetic Fe3O4@SiO2 microspheres, Cs(I) ion and carboxymethyl chitosan as supporter, template and functional monomers respectively. The resultant Cs(I)-MIIP was used as ionophore in the construction of the PVC membrane electrode to obtain a selective potentiometric microsensor toward Cs(I) ions. The fabricated sensor exhibited a highly sensitive Nernstian response (60.2 mV/decade) over the concentration range of 1 × 10−6 to 1 × 10−1 M of Cs(I). The response time of the microsensor was considerably short (less than 3 s) and its detection limit was determined as 3.0 × 10−7 M. The microsensor was effectively performed in the pH range of 4–6, and revealed desirable selectivity over a wide variety of other cations including alkali, alkaline earth and heavy metals. The proposed microsensor was also used for the determination of Cs(I) contents in the environmental water samples. The potentiometric results were in good harmony with the results obtained by the ICP-MS method.

CAS / MDL: 919-30-2 7647-17-8 9012-76-4 107-21-1 10025-77-1 111-30-8 25322-68-3 127-09-3 78-10-4

研究领域: 分析化学 · 环境科学 · 材料科学

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An Enantioselective Potentiometric Sensor for 2-Amino-1-Butanol Based on Chiral Porous Organic Cage CC3-R

Potentiometric microsensor based on ion-imprinted polymer for the trace determination of cesium(I) ions