Polydopamine assisted liquid phase deposition for preparation of zirconia coated column in capillary electrophoresis

Han, Kai; Liu, Shujuan; Tang, Sheng; Liu, Xia; Jiang, Shengxiang

doi:10.1039/c2ay25802a

Cited by 16 publications

(11 citation statements)

References 27 publications

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“…In the presence of weak base and oxygen, DA can polymerize to PDA by noncovalent self‐assembly and by covalent polymerization by its oxidative product, 5,6‐dihydroxyindole , PDA thus formed readily settles on the inner walls of a capillary column and function as CEC stationary phase .…”

Section: Resultsmentioning

confidence: 99%

A novel in situ strategy for the preparation of a β‐cyclodextrin/polydopamine‐coated capillary column for capillary electrochromatography enantioseparations

Guo

Niu

Pan

et al. 2017

J of Separation Science

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Inspired by the chiral recognition ability of β-cyclodextrin and the natural adhesive properties of polydopamine under alkaline conditions, in this study, a rapid and in situ modification strategy was developed to fabricate β-cyclodextrin/polydopamine composite material coated-capillary columns for open tubular capillary electrochromatography. The results of scanning electron microscopy, FTIR spectroscopy, streaming potential, and electro-osmotic flow studies indicated that β-cyclodextrin/polydopamine was successfully fixed on the inner wall of the capillary column. This coating can be achieved within 1 h affording a greatly reduced capillary preparation time. The performance of the β-cyclodextrin/polydopamine-coated capillary was validated by the analysis of seven pairs of chiral analytes, namely epinephrine, norepinephrine, isoprenaline, terbutaline, verapamil, tryptophane, carvedilol. Good enantioseparation efficiencies were achieved for all. For three consecutive runs, the relative standard deviations for the migration times of the analytes for intraday, interday, and column-to-column repeatability were in the range of 0.41-1.74, 1.03-4.18, and 1.66-8.24%, respectively. Moreover, the separation efficiency of the β-cyclodextrin/polydopamine-coated capillary column did not decrease obviously over 90 runs. The strategy should also be feasible to introduce and immobilize other chiral selectors on the inner walls surface of capillary columns.

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Section: Resultsmentioning

confidence: 99%

A novel in situ strategy for the preparation of a β‐cyclodextrin/polydopamine‐coated capillary column for capillary electrochromatography enantioseparations

Guo

Niu

Pan

et al. 2017

J of Separation Science

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“…In reality, the in situ growth strategy was commonly used due to the better stability of the NPs capillary as compared to direct immobilization. For example, Zirconia (ZrO 2 ) NPs immobilized through liquid phase deposition on PDA-modified columns were initially developed by Han et al [69]. Five inorganic anions (Br − , I − , NO 3− , SCN − , and BrO 3− ) and five alkaloids (ephedrine, matrine, sinomenine, oxymatrine, and colchicine) were baseline separated with good stability.…”

Section: Nanomaterialsmentioning

confidence: 99%

Applications of polydopamine modifications in capillary electrophoretic analysis

Zhang

Yang

2018

J of Separation Science

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Mussel-inspired polydopamine has been widely used in capillary electrophoresis as a facile and universal tool for the surface modification of capillary, mainly due to its versatility, stability, strong adhesiveness, and biocompatibility properties. In this review, the recent development of mussel-inspired surface chemistry with rapid deposition of polydopamine was introduced, and the recent applications of polydopamine in capillary electrophoresis (2011-July 2018) were summarized into four main aspects, namely, sample pretreatments, functional coatings, codeposition coatings, and intermediate coatings. Further study may be focused on clarifying the mechanisms of polydopamine formation and polydopamine-assisted codeposition, and expanding coatings methods to plant polyphenols.

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“…[12][13][14][15] In addition, the abundant free catechol and amino groups of PDA could firmly combine with various metal ions by chelation. [16][17][18][19][20] The condition of PDA assisted immobilisation was simple and mild; most PDA coating processes were operated in room temperature and ordinary pressure using aqueous solutions. Reports have shown that PDA could tightly combine with Cu(II), thus could be used to adsorb copper ions from aqueous solution 21 or to immobilise copper onto surfaces.…”

Section: Introductionmentioning

confidence: 99%

Polydopamine assisted immobilisation of copper(II) on titanium for antibacterial applications

Zhu

Wang

et al. 2014

Materials Technology

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Copper(II) were immobilised onto medical titanium surface by polydopamine (PDA) chelating, to build intrinsic antibacterial implant materials for inhibition of implant infection. A scanning electrical microscope showed that the modified titanium surface morphology was a porous nanostructure. An energy dispersive spectrometer showed the existence of Cu, and X-ray photoelectron spectroscopy results further confirmed that the immobilised copper element was in the form of Cu(II). Bacteria plate colony counting results showed that modified titanium surface had decent antibacterial property, matching the ion release outcomes. It could be conclude that the PDA assisted Cu(II) immobilisation was an efficient and effective method for antibacterial modification of titanium.

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Polydopamine assisted liquid phase deposition for preparation of zirconia coated column in capillary electrophoresis

Cited by 16 publications

References 27 publications

A novel in situ strategy for the preparation of a β‐cyclodextrin/polydopamine‐coated capillary column for capillary electrochromatography enantioseparations

A novel in situ strategy for the preparation of a β‐cyclodextrin/polydopamine‐coated capillary column for capillary electrochromatography enantioseparations

Applications of polydopamine modifications in capillary electrophoretic analysis

Polydopamine assisted immobilisation of copper(II) on titanium for antibacterial applications

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