کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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608903 | 880611 | 2011 | 6 صفحه PDF | دانلود رایگان |
Debundling and selective dispersion of semiconducting single-walled carbon nanotubes (SWNTs) has been demonstrated using a neutral pH water soluble chitosan derivative, N-acetylated chitosan (NACHI), which is synthesized by controlled N-acetylation of chitosan using acetic anhydride. The SWNT–NACHI supernatant solution demonstrated semiconductor-enriched property owing to the preferential adsorption of N-groups of the NACHI on semiconducting nanotubes with a fairly weak charge transfer. The dispersion of nearly individualized SWNTs achieved by surface modification of nanotubes with a biocompatible polymer can be utilized for electronic and biomedical applications such as field effect transistor, biosensor, cell culture medium and SWNT-biomacromolecule hybrid materials.
Debundling and stabilization of semiconductor-enriched SWNT suspension was acquired using a neutral pH water soluble chitosan derivative, N-acetylated chitosan. The N-groups of the polymer selectively adsorb on semiconducting nanotubes..Figure optionsDownload high-quality image (107 K)Download as PowerPoint slideResearch highlights
► Individual suspension of SWNTs using a neutral pH water soluble chitosan derivative.
► N-groups of polymer selectively attach on semiconducting SWNTs with a weak charge transfer.
► SWNTs wrapped with biocompatible polymer are attractive for biomedical applications.
Journal: Journal of Colloid and Interface Science - Volume 354, Issue 2, 15 February 2011, Pages 461–466