Luminescent Rare-Earth Complex Covalently Modified Single-Walled Carbon Nanotubes: Design, Synthesis, and DNA Sequence-Dependent Red Luminescence Enhancement

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• 作者：Chao Zhao ; Yujun Song ; Konggang Qu ; Jinsong Ren ; Xiaogang Qu
• 刊名：Chemistry of Materials
• 出版年：2010
• 出版时间：October 26, 2010
• 年：2010
• 卷：22
• 期：20
• 页码：5718-5724
• 全文大小：889K
• 年卷期：v.22,no.20(October 26, 2010)
• ISSN：1520-5002

文摘

A novel luminescent Eu³⁺-complex functionalized single-walled carbon nanotube (SWNT) was constructed by covalent linkage through a diaminotriethylene glycol linker. TGA, FT-IR, and SEM demonstrated successful attachment of the Eu³⁺-complex onto the SWNT surface. Spectroscopic methods showed that the SWNT-Eu³⁺ complex is highly luminescent and DNA can further enhance the red luminescence, and the enhancement depends on DNA sequence and form. The order of the enhancement follows: AT alternative dsDNA > nonalternative AT dsDNA > GC dsDNA > ssDNA dA > ssDNA dT > ssDNA (GT)₂₀.