Polyvinylsilazane layer coating and its application in poly(dimethylsiloxane) microchip electrophoresis

Li, Ming; Quan, Hong-Hua; Xu, Guangri; Kim, Dong‐Pyo

doi:10.1016/j.microc.2013.09.004

Cited by 11 publications

(6 citation statements)

References 23 publications

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“…This material is especially suited for LSC‐PM since it can be easily shaped with both soft‐lithography and print‐and‐peel techniques to produce microfluidic devices . PDMS can be readily doped with organic dyes and its chemical stability can be further increased by surface modification strategies …”

Section: Figurementioning

confidence: 99%

“…[26] PDMS can be readily doped with organic dyes [23c] and its chemical stability can be further increased by surface modification strategies. [27] Fort he successful coupling of the luminescent-concentrated photon flux through the device with the reaction channels,t he optimization of several design parameters was crucial. We conducted an in silico screening on the impact of several reactor design factors using aMonte Carlo ray-tracing simulation (see the Supporting Information).…”

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confidence: 99%

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A Leaf‐Inspired Luminescent Solar Concentrator for Energy‐Efficient Continuous‐Flow Photochemistry

et al. 2016

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The use of solar light to promote chemical reactions holds significant potential with regard to sustainable energy solutions. While the number of visible light-induced transformations has increased significantly, the use of abundant solar light has been extremely limited. We report a leaf-inspired photomicroreactor that constitutes a merger between luminescent solar concentrators (LSCs) and flow photochemistry to enable green and efficient reactions powered by solar irradiation. This device based on fluorescent dye-doped polydimethylsiloxane collects sunlight, focuses the energy to a narrow wavelength region, and then transports that energy to embedded microchannels where the flowing reactants are converted.

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Section: Figurementioning

confidence: 99%

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confidence: 99%

A Leaf‐Inspired Luminescent Solar Concentrator for Energy‐Efficient Continuous‐Flow Photochemistry

et al. 2016

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“…Compared to other PDMS surface modifications found in the literature, we have found that the DVE‐PEG‐modified PDMS microchip presented one of the higher EOF mobility values, with magnitude comparable to O 2 plasma treated and multilayer polyelectrolyte modified PDMS . The EOF mobility for a series of PDMS surface modifications can be found in the Supporting Information 2.…”

Section: Resultsmentioning

confidence: 63%

Surface modification of PDMS microchips with poly(ethylene glycol) derivatives for μTAS applications

2014

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In this work is presented a method for the modification of native PDMS surface in order to improve its applicability as a substrate for microfluidic devices, especially in the analysis of nonpolar analytes. Therefore, poly(ethylene glycol) divinyl ether modified PDMS substrate was obtained by surface modification of native PDMS. The modified substrate was characterized by attenuated total reflectance infrared spectroscopy, water contact angle measurements, and by evaluating the adsorption of rhodamine B and the magnitude of the EOF mobility. The reaction was confirmed by the spectroscopic evaluation. The formation of a well-spread water film over the surface immediately after the modification was an indicative of the modified surface hydrophilicity. This characteristic was maintained for approximately ten days, with a gradual return to a hydrophobic state. Fluorescence assays showed that the nonpolar adsorption property of PDMS was significantly decreased. The EOF mobility obtained was 3.6 × 10(-4) cm(2) V(-1) s(-1) , higher than the typical values found for native PDMS. Due to the better wettability promoted by the modification, the filling of the microchannels with aqueous solutions was facilitated and trapping of air bubbles was not observed.

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“…The reason for the bad separation of three proteins in the traditional CE apparatus lies in the adsorption of biomacromolecules, particularly proteins onto fused silica capillaries, which severely degrades the separation performance of CE, leading to sample loss, peak broadening, and long migration times. [28][29][30][31][32] The USB flash disk type MCE can avoid the disadvantage of traditional CE by using a more anti-protein-fouling microchannel of PDMS. Table I shows that the run-to-run (n ¼ 5) relative standard deviation (RSD) of migration time for the proteins in the USB flash disk type MCE is less than 1%, day-to-day (n ¼ 5) RSD is less than 2%, and chip-to-chip (n ¼ 5) RSD is less than 3%.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of universal serial bus flash disk type microfluidic chip electrophoresis and application for protein analysis under ultra low voltage

Cong

et al. 2016

Biomicrofluidics

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A simple and effective universal serial bus (USB) flash disk type microfluidic chip electrophoresis (MCE) was developed by using poly(dimethylsiloxane) based soft lithography and dry film based printed circuit board etching techniques in this paper. The MCE had a microchannel diameter of 375 lm and an effective length of 25 mm. Equipped with a conventional online electrochemical detector, the device enabled effectively separation of bovine serum albumin, lysozyme, and cytochrome c in 80 s under the ultra low voltage from a computer USB interface. Compared with traditional capillary electrophoresis, the USB flash disk type MCE is not only portable and inexpensive but also fast with high separation efficiency. V C 2016 AIP Publishing LLC.

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Polyvinylsilazane layer coating and its application in poly(dimethylsiloxane) microchip electrophoresis

Cited by 11 publications

References 23 publications

A Leaf‐Inspired Luminescent Solar Concentrator for Energy‐Efficient Continuous‐Flow Photochemistry

A Leaf‐Inspired Luminescent Solar Concentrator for Energy‐Efficient Continuous‐Flow Photochemistry

Surface modification of PDMS microchips with poly(ethylene glycol) derivatives for μTAS applications

Fabrication of universal serial bus flash disk type microfluidic chip electrophoresis and application for protein analysis under ultra low voltage

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