Evidence map›Paper›PMID 38902347›Full record

ArticleAnalytical and bioanalytical chemistry2024

In situ growth of dual-responsive polymer as coating for open tubular capillary electrochromatographic separation of epimedins.

Nasir Ali, Liu Yutong, Fuyi Wang, Li Qi

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Article in Analytical and bioanalytical chemistry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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2 citing papers in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Nasir AliKey Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory of Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
Liu YutongKey Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory of Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
Fuyi WangKey Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory of Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, China. fuyi.wang@iccas.ac.cn.
Li QiKey Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Beijing National Laboratory of Molecular Sciences, Chinese Academy of Sciences, Beijing, 100190, China. qili@iccas.ac.cn.

Funding

National Natural Science Foundation of China 22274159
6 · The paper itself

Abstract

Recently, open tubular capillary electrochromatography (OT-CEC) has captured considerable interest; its efficient separation capability hinges on the interactions between analytes and polymer coatings. However, in situ growth of stimuli-responsive polymers as coatings has been rarely studied and is crucial for expanding the OT-CEC technique and its application. Herein, following poly(styrene-maleicanhydride) (PSM) chemically bonded onto the inner surface of the capillary, a dual pH/temperature stimuli-responsive block copolymer, P(SMN-COOH), was prepared by in situ polymerizing poly(N-isopropylacrylamide) carboxylic acid terminated [P(N-COOH)] in PSM. An OT-CEC protocol was first explored using the coated capillary for epimedins separation. As a proof of concept, the developed OT-CEC system facilitated hydrogen bonding and tuning the hydrophilic/hydrophobic interactions between the test analytes and the P(SMN-COOH) coating by varying buffer pH and environmental temperature. Four epimedins with similar chemical structures were baseline separated under 40 °C at pH 10.0, exhibiting dramatical improvement in separation efficiency in comparison to its performance under 25 °C at pH 4.0. In addition, the coated capillary showed good repeatability and reusability with relative standard deviations for migration time and peak area between 0.7 and 1.7% and between 2.9 and 4.6%, respectively, and no significant changes after six runs. This work introduces a paradigm for efficient OT-CEC separation of herbal medicines through adjusting the interactions between analytes and smart polymer coatings, addressing polymer coating design and OT-CEC challenges.

Indexed as

Dual-responsive block copolymerEpimedinsIn situ polymerizationOpen tubular capillary electrochromatographyReal herbal extracts

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.