Spatially Controllable DNA Condensation by a Water‐Soluble Supramolecular Hybrid of Single‐Walled Carbon Nanotubes and β‐Cyclodextrin‐Tethered Ruthenium Complexes |
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| Authors: | Miao Yu Sheng‐Zhen Zu Dr Yong Chen Dr Yu‐Ping Liu Dr Bao‐Hang Han Prof?Dr Yu Liu Prof?Dr |
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| Institution: | 1. Department of Chemistry, State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin, 300071 (P. R. China), Fax: (+86)?22‐2350‐3625;2. National Center for Nanoscience and Technology, Beijing 100190 (P. R. China), Fax: (+86)?10‐8254‐5576;3. Research Center for Analytic Sciences, Nankai University, Tianjin 300071 (P. R. China) |
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| Abstract: | A supramolecular hybrid is prepared by the supramolecular surface modification of single‐walled carbon nanotube (SWCNT) with cationic β‐cyclodextrin‐tethered ruthenium complexes through a spacer molecule that contains both an adamantane and a pyrene moiety. By employing the supramolecular hybrid, spatially controllable DNA condensation along the SWCNT skeleton is achieved by anchoring cationic ruthenium complexes on the surface. Furthermore, because of the unique physiological properties of SWCNTs, the cationic supramolecular hybrid can be used as a nonviral gene delivery system with the ruthenium complexes as a fluorescent probe to monitor uptake of DNA by cells. |
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| Keywords: | cyclodextrins DNA ruthenium nanotubes single‐walled carbon nanotubes |
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