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Self-Assemblies of Single-Walled Carbon Nanotubes through Tunable Tethering of Pyrenes by Dextrin for Rapidly Chiral Sensing

التفاصيل البيبلوغرافية
العنوان: Self-Assemblies of Single-Walled Carbon Nanotubes through Tunable Tethering of Pyrenes by Dextrin for Rapidly Chiral Sensing
المؤلفون: Wei-Li Wei, Qiushui Chen, Haifang Li, Jin-Ming Lin
المصدر: International Journal of Analytical Chemistry, Vol 2011 (2011)
بيانات النشر: Hindawi Limited, 2011.
سنة النشر: 2011
المجموعة: LCC:Analytical chemistry
مصطلحات موضوعية: Analytical chemistry, QD71-142
الوصف: Pyrene-modified dextrin (Py-Dex) was synthesized via the Schiff base reaction between reducing end of dextrins and 1-aminopyrene, and then self-assemblies of single-walled carbon nanotubes (SWNTs) were fabricated through the tunable tethering of pyrene to SWNTs by dextrin chains. The Py-Dex-SWNTs assemblies were found to be significantly water-soluble because of the synergistic effect of dextrin chains and pyrene moieties. Py-Dex and Py-Dex-SWNTs were adequately characterized by NMR, UV-vis, fluorescence spectroscopy, Raman spectroscopy, matrix-assisted laser desorption/ionization-time of flight mass spectroscopy, and transmission electron microscopy. The tethering effect of dextrin toward pyrene moieties was clearly revealed and was found to be tunable by adjusting the length of dextrin chains. The fluorescence of pyrene moieties was sufficiently quenched by SWNTs with the support of dextrin chains. Furthermore, the Py-Dex-SWNTs assemblies were used for chiral selective sensing by introducing cyclodextrins as chiral binding sites. The rapid chiral sensing was successfully tested for different enantiomers.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1687-8760
1687-8779
Relation: https://doaj.org/toc/1687-8760; https://doaj.org/toc/1687-8779
DOI: 10.1155/2011/862692
URL الوصول: https://doaj.org/article/3d6fd648b19249e0b2955156f24a3f93
رقم الأكسشن: edsdoj.3d6fd648b19249e0b2955156f24a3f93
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:16878760
16878779
DOI:10.1155/2011/862692