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侧链聚乙二醇化单壁碳纳米管的制备及阻抗蛋白吸附的研究
引用本文:张国祥,刘志勇,贾鑫.侧链聚乙二醇化单壁碳纳米管的制备及阻抗蛋白吸附的研究[J].石河子大学学报,2013(5):634-639.
作者姓名:张国祥  刘志勇  贾鑫
作者单位:石河子大学化学化工院/新疆兵团化工绿色过程重点实验事/省部共建国家重点实验室培育基地,石河子832003
摘    要:聚乙二醇化单壁碳纳米管具有很好的生物相容性,是目前学界研究的一个热点问题,有望成为新一代药物载体。本文通过多巴胺化学和表面引发原子转移自由基聚合(SI—ATRP)相结合的方法,以甲基丙烯酸寡聚乙二醇酯(OEGMA)为单体,制备了4种不同分子链段长度的聚甲基丙烯酸寡聚乙二醇酯(POEGMA)修饰的SWNTs(SWNTs@POEGMA),并进行了热重(TGA)、红外(FTIR)、X衍射光电子能谱(XPS)以及透射电镜(TEM)表征,研究了SWNTs@POEGMA的结构对牛血清蛋白(BSA)的吸附性能的影响。实验结果表明:SWNTs@POEGMA对牛血清蛋白(BSA)具有明显的阻抗吸附能力,且其阻抗蛋白吸附的能力取决于接枝在SWNTs上POEGMA的长度;在本文的实验条件下,SWNTs@POEGMA对BSA的吸附量最小可达26.8mg/g。

关 键 词:聚乙二醇化单壁碳纳米管  表面修饰  阻抗蛋门

Preparation and Characterization of SWNTs@POEGMA and Their Protein Resistance Property
ZHANG Guoxiang,LIU Zhiyong,JIA Xin.Preparation and Characterization of SWNTs@POEGMA and Their Protein Resistance Property[J].Journal of Shihezi University(Natural Science),2013(5):634-639.
Authors:ZHANG Guoxiang  LIU Zhiyong  JIA Xin
Institution:(Key I.aboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan,/ School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China)
Abstract:In this work,a series of poly(oligo(ethylene glycol) methacrylate) (P()EGMA) modified SWNTs (SWNTs@POEG IMA) with different POEGMA segments were prepared by a combination of mussel inspired chemistry and surface-initiated atom transfer radical polymerization (SI-ATRP). The resultant SWNTs@POEGMA were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR),X ray photoelectron spectroscopy (XPS) and transmission elec tron microscopy (TEM). The protein resistance properties of SWNTs@POEGMA were also investigated and the results demonstrated that SWNTs@P()EGMA existed resistence to bovine serum albumin (BSA) and the ability was dependant on the length of the POEGMA molecule. The lowest adsorption amount of BSA on SWNTs@POEGMA was 26.8 mg/g under lhe ex- periment conditions in this work.
Keywords:PE Gylated single-walled carbon nanotubes  surface modification  prolein resistance
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