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首页> 外文期刊>Chemistry: A European journal >Functional Macromolecules from Single-WalledCarbon Nanotubes: Synthesis andPhotophysical Properties of Short Single-WalledCarbon Nanotubes Functionalisedwith 9,10-Diphenylanthracene
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Functional Macromolecules from Single-WalledCarbon Nanotubes: Synthesis andPhotophysical Properties of Short Single-WalledCarbon Nanotubes Functionalisedwith 9,10-Diphenylanthracene

机译：单壁碳纳米管的功能高分子：用9,10-二苯基蒽官能化的短单壁碳纳米管的合成和光物理性质

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摘要

9,10-Diphenylanthracene (DPA), a well-studied organic chromophore(Ffl=0.98) that exhibits electroluminescence, has been covalently bound through 2-(ethylthio)ethylamido linkers to the carboxylic acid groups of short, soluble single-walled carbon nanotubes (sSWNTs) of 1 mm average length, and the resulting DPA-functionalised sSWNT (DPA- sSWNT) macromolecular adducts (4.6 wt% DPA content) characterised by solution 1H NMR, Raman and IR spectroscopy and thermogravimetric analysis. Comparison of the quenching of DPA fluorescence (steady-state and time-resolved) and of the transient optical spectra of sSWNTs and DPA-sSWNTs show that the covalent linkage boosts the interaction between the DPA and the sSWNT units. DPA-sSWNTs exhibit emission in the near-IR region from 1100C1400 nm with an enhanced quantum yield (F=5.710-3) comparedwith sSWNTs (F=3.910-3).
机译：9,10-二苯基蒽（DPA）是一种经过充分研究的有机发色团（Ffl = 0.98），具有电致发光特性，已通过2-（乙硫基）乙基酰胺基接头共价键合到短的可溶单壁碳纳米管的羧酸基团上（sSWNTs）平均长度为1毫米，所得DPA官能化的sSWNT（DPA- sSWNT）大分子加合物（DPA含量为4.6 wt％）以溶液1H NMR，拉曼光谱和IR光谱以及热重分析为特征。 sSWNTs和DPA-sSWNTs的DPA荧光猝灭（稳态和时间分辨）和瞬态光谱的比较表明，共价键促进了DPA和sSWNT单元之间的相互作用。与sSWNTs（F = 3.910-3）相比，DPA-sSWNTs在1100C1400 nm附近的IR区域显示发射，量子产率提高（F = 5.710-3）。

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