News Column

New Nanocomposites Study Findings Recently Were Reported by Researchers at Nanchang University

February 18, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on Nanocomposites are discussed in a new report. According to news reporting from Nanchang, People's Republic of China, by NewsRx journalists, research stated, "A novel chip-based enantioselective open-tubular capillary electrochromatography (OT-CEC) was developed employing bovine serum albumin (BSA) conjugated polydopamine graphene oxide (PDA/GO) nanocomposites (PDA/GO/BSA) as stationary phase. After the poly(dimethylsiloxane) (PDMS) microfluidic chip was filled with a freshly prepared solution containing dopamine and graphene oxide, PDA/GO nanocomposites were formed and deposited on the inner wall of microchannel as permanent coating via the oxidation of dopamine by the oxygen dissolved in the solution."

The news correspondents obtained a quote from the research from Nanchang University, "The PDA/GO-coated PDMS microchips not only have the adhesion of PDA that make them easily immobilized in the microchannel, but also have the larger surface and excellent biocompatibility of graphene which can incorporate much more biomolecules and well maintain their biological activity. In addition, incorporation of GO in PDA film can make surface morphology more rough, which is beneficial for enhancing the loading capacity of proteins in the microchannels and increasing sample capacity of OT-CEC columns. BSA was stably immobilized in the PDMS microchannel to fabricate a protein-stationary phase. Compared with the native PDMS microchannels, the modified surfaces exhibited much better wettability, more stable electroosmotic mobility, and less nonspecific adsorption. The efficient separation of chiral amino acids (tryptophan and threonine) and chiral dipeptide demonstrate that the constructed OT-CEC columns own ideal enantioselectivity."

According to the news reporters, the research concluded: "The presented strategy using PDA/GO coating as a versatile platform for facile conjugation of proteins may offer new processing strategies to prepare a functional surface designed on microfluidic chips."

For more information on this research see: Facile preparation of protein stationary phase based on polydopamine/graphene oxide platform for chip-based open tubular capillary electrochromatography enantioseparation. Journal of Chromatography A, 2014;1323():135-142. Journal of Chromatography A can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)

Our news journalists report that additional information may be obtained by contacting R.P. Liang, Nanchang University, Dept. of Chem, Nanchang, People's Republic of China. Additional authors for this research include X.N. Wang, C.M. Liu, X.Y. Meng and J.D. Qiu (see also Nanocomposites).

Keywords for this news article include: Asia, Nanchang, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Life Science Weekly


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