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碳纳米管在生物传感器及药物/基因领域的研究进展 总被引:1,自引:0,他引:1
碳纳米管(carbon nanotubes,CNTs)是一种新型纳米材料,具有特殊的纳米结构,在生物医学领域显示出诱人的潜在应用价值和前景,正逐步引起越来越多研究者的关注。功能化碳纳米管(f-CNTs)具有特殊的识别功能、很强的细胞穿透能力和较低的细胞毒性,为它在生物传感器的发展开辟了广阔的前景,同时,也使其在药物和基因运转领域中的应用成为可能。综述了近几年国内外关于碳纳米管在生物传感器、药物和基因转运领域中的应用进展,并简要探讨了其毒性。 相似文献
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《高分子材料科学与工程》2006,22(5):49-49
本发明提供了一种聚磺化苯乙烯接枝的水溶性碳纳米管及其制备方法。将碳纳米管处理后使其表面带有特定引发基团;然后用原子转移自由基聚合反应引发乙烯基苯磺酸钠单体聚合,得到聚磺化苯乙烯接枝的水溶性碳纳米管。这种制备方法简单易行,可控性强;所得产品在水中表现出良好的溶解性,可以作为水溶性高分子材料的特种添加剂;同时由于其纳米级的尺寸,可以作为特殊功能的纳米器件;也可以作为不同系统间物质传递与转移的载体;从而在纳米科学、材料科学和生物医学诸方面有着巨大的应用前景。 相似文献
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碳纳米管因其可以穿透细胞膜和生物体的多重屏障进入细胞和生物体内而在生物医药领域具有广泛应用前景。介绍了碳纳米管的基本性质,概述了碳纳米管聚合物复合材料的生物相容性,并在此基础上综述了其在生物电驱动材料、支架材料以及药物载体等方面应用的最新成果,展望了未来碳纳米管聚合物复合材料在生物医药领域的发展方向。 相似文献
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碳纳米管作为一种极具有前景新型的载体材料,在材料、物理和化学领域应用极为广泛。因此,碳纳米管载体的化学修饰和表面改性优化研究,对提高催化性能十分必要。对目前最主要简便的优化碳纳米管载体方法,如碳纳米管预处理、碳纳米管的填充、增大比表面积进行了评述,并介绍了各种方法中典型的操作步骤。 相似文献
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《高分子材料科学与工程》2006,22(3):120-120
本发明提供了一种超支化聚对氯甲基苯乙烯接枝的碳纳米管及其制备方法。将碳纳米管处理后使其表面带有特定引发基团;然后用原子转移自由基聚合反应引发对氯甲基苯乙烯单体聚合,得到超支化聚对氯甲基苯乙烯接枝的碳纳米管。这种制备方法简单易行,可控性强;所得产品在有机溶剂中表现出良好的溶解性,可以作为高分子材料的特种添加剂;同时由于其纳米级的尺寸,可以作为特殊功能的纳米器件;也可以作为不同系统间物质传递与转移的载体;从而在纳米科学、材料科学和生物医学诸方面有着巨大的应用前景。 相似文献
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结合近年来岩藻聚糖硫酸酯作为新型药物转运载体的研究现状,重点介绍了岩藻聚糖硫酸酯在缓释包衣、微球栓塞、纳米给药、基因治疗、外科修复和透皮给药等新型药物转运体系方面的应用研究,总结了目前岩藻聚糖硫酸酯作为药物载体仍存在的一些问题,并展望了其应用前景。 相似文献
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Hang Sun Ping She Guolong Lu Kongliang Xu Wei Zhang Zhenning Liu 《Journal of Materials Science》2014,49(20):6845-6854
Carbon nanotubes (CNTs) possess unique physical and chemical properties and can serve as a platform for transporting a variety of bioactive molecules, such as drugs, proteins, and genes, given appropriate surface modifications. Here, we present an overview of the progress in applying CNTs as therapeutic agent carriers. Drugs can be attached to CNTs either through supramolecular chemistry to form noncovalent assembly or via covalent linkage to the functional groups preinstalled on CNTs. In addition to surface loading, packing of molecules inside the internal cavity of CNTs to protect less stable entities has also been achieved. Besides drugs, the high specific surface area of CNTs can also allow the installation of multiple molecules with different functions, e.g. target recognition and optical imaging, simultaneously to achieve synergistic effects. The drug release process tends to be gradual and sustained after being attached to CNTs, and could be tuned by various factors, such as pH, diameter of CNTs, and target recognition. The content throughout this review is mainly focused on the different protocols of loading drugs onto or into CNTs as well as how to control the drug release. 相似文献
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D. Depan R.D.K. Misra 《Materials science & engineering. C, Materials for biological applications》2012,32(6):1704-1709
We describe here a transformative approach to synthesize a hybrid nanostructured drug carrier that exhibits the characteristics of controlled drug release. The synthesis of the nanohybrid architecture involved two steps. The first step involved direct crystallization of biocompatible copolymer along the long axis of the carbon nanotubes (CNTs), followed by the second step of attachment of drug molecule to the polymer via hydrogen bonding. The extraordinary inorganic–organic hybrid architecture exhibited high drug loading ability and is physically stable even under extreme conditions of acidic media and ultrasonic irradiation. The temperature and pH sensitive characteristics of the hybrid drug carrier and high drug loading ability merit its consideration as a promising carrier and utilization of the fundamental aspects used for synthesis of other promising drug carriers. The higher drug release response during the application of ultrasonic frequency is ascribed to a cavitation-type process in which the acoustic bubbles nucleate and collapse releasing the drug. Furthermore, the study underscores the potential of uniquely combining CNTs and biopolymers for drug delivery. 相似文献
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碳纳米管修饰酶传感器的评述 总被引:3,自引:0,他引:3
对酶传感器的作用机理和发展过程进行了介绍,综述了碳纳米管修饰酶传感器的最新研究进展.根据碳纳米管和基础电极结合方式的不同,把碳纳米管修饰酶传感器分为不可逆吸附型、糊类、阵列型、共价键合型几类,并对不同类型碳纳米管修饰酶传感器的制备方法、优缺点进行了评述,最后提出了碳纳米管修饰酶传感器的研究发展方向. 相似文献
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纳米碳管的孔结构、相关物性和应用 总被引:21,自引:0,他引:21
评述了纳米碳管(CNT)的纳米孔隙结构及其决定的特殊物化性质,以及潜在的应用。CNT孔径体系由多层次的孔隙组合而成,开口的一维中空管腔是最基本的孔隙结构,其纳米级的尺度和物理形态决定了它的超常吸附性质和其它物化特性,使CNT成为极具潜力的纳米级能量载体;提供了进行一维物理化学过程的极限反应空间,是真正意义上的纳米反应器;CNT的比表面积和孔径结构及其决定的吸附性质还决定或者影响着许多其它物化性质(如电磁性质)。发展纳米碳管中的物理化学研究,制备基于大表面积、可控孔结构CNT的纳米器件,是CNT领域的重要研究方向。 相似文献
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石墨烯量子点是石墨烯超家族的衍生物,与高维度石墨烯相比,具有良好的生物相容性,较低的细胞毒性及较好的化学修饰性。自发现以来,石墨烯量子点的应用领域被逐渐地拓宽。其中石墨烯量子点的生物应用主要包括生物成像、生物传感器、药物运输、基因载体、抗菌抗病毒及肿瘤的光动力治疗研究等。主要介绍了近几年有关石墨烯量子点生物相容性及其在生物医学研究的进展,并对其发展前景进行了展望。 相似文献
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Chang Feng Zhuoyuan Chen Jiangping Jing Mengmeng Sun Jing Tian Guiying Lu Li Ma Xiangbo Li Jian Hou 《材料科学技术学报》2021,80(21):75-83
The electron mediator can effectively improve the performance of the direct Z-scheme heterojunction photocatalysts.However,it is still a great challenge to select cheap and efficient electron mediators and to design them into the Z-scheme photocatalytic system.In the present paper,the g-C3N4/CNTs/CdZnS Z-scheme photocatalyst was prepared using carbon nanotubes (CNTs) as the electron mediators,and its photocatalytic hydrogen production performance was studied.Compared with single-phase g-C3N4,CdZnS and biphasic g-C3 N4/CdZnS photocatalysts,the photocatalytic hydrogen production performance of the prepared g-C3N4/CNTs/CdZnS has been significantly enhanced.Meanwhile,g-C3N4/CNTs/CdZnS possesses very good photocatalytic hydrogen production stability.The enhanced photocatalytic hydrogen production performance of g-C3 N4/CNTs/CdZnS is attributed to the fact that CNTs,as an electron mediator,can accelerate the recombination of the photogenerated holes in the valence band of g-C3N4 and the photogenerated electrons in the conduction band of CdZnS,which makes the g-C3N4/CNTs/CdZnS Z-scheme photocatalyst be easier to escape the photogenerated electrons,increases the concentration of the photogenerated carriers and prolongs the lifetime of the photogenerated carriers.This work provides a theoretical basis for the further development and design of CNTs as the intermediate electron mediator of the Z-scheme heterojunction photocatalyst. 相似文献