High-Yield Dispersions of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes with Tunable Narrow Chirality Distributions
High-Yield Dispersions of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes with Tunable Narrow Chirality Distributions
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DOI：
10.1021/nn305336x
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发表时间：
2013-03-01
期刊：
影响因子：
17.1
通讯作者：
Blackburn, Jeffrey L.
中科院分区：
文献类型：
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作者：
Mistry, Kevin S.;Larsen, Brian A.;Blackburn, Jeffrey L.
在这里，我们报告了一项深入研究了芴基半导体聚合物分散大直径（平均直径< d >约1.3 nm）激光汽化（LV）单壁碳纳米管（SWCNTs）的能力。我们证明了使用聚[（9,9-二辛基氟壬基-2,7-二基）-盐-co-（6,6'-{2,2'-联吡啶})]（PFO-BPy）和聚[（9,9-二己基氟壬基-2,7-二基）-co-（9,10-蒽））（PFH-A）选择纯半导体物质的能力，生产的样品相对于类似的水分散体具有狭窄和明亮的激子发射。快速加工和高产量提供了将这些半导体SWCNTs轻松纳入商业可扩展应用的能力，正如超声喷涂制备的大面积薄膜所证明的那样。通过改变LV合成的生长温度，我们证明了通过对起始材料的组成施加合成控制来调节分散体内直径和手性范围的能力。这种合成控制使我们能够证明PFH-A在大直径范围（0.8 nm）内优先分散近扶手型半导体SWCNTs
Here, we report a thorough study on the ability of fluorene-based semiconducting polymers to disperse large-diameter (average diameter < d > approximate to 1.3 nm) laser vaporization (LV) single-walled carbon nanotubes (SWCNTs). We demonstrate the ability to select purely semiconducting species using poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(6,6'-{2,2'-bipyridine})] (PFO-BPy) and poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,10-anthracene))(PFH-A), producing samples with narrow and bright excitonic emission relative to comparable aqueous dispersions. Rapid processing and high yields offer the ability to easily incorporate these semiconducting SWCNTs into commercially scalable applications, as demonstrated by large-area thin films prepared by ultrasonic spraying. By modifying the growth temperature of the LV synthesis, we demonstrate the ability to tune the range of diameters and chiralities within dispersions by exerting synthetic control over the composition of the starting material. This synthetic control allows us to show that PFH-A preferentially disperses near-armchair semiconducting SWCNTs over a large range of diameters (0.8 nm