Helical Wrapping of Single-Walled Carbon Nanotubes by Water Soluble Poly(p-phenyleneethynylene)

被引：151

作者：

Kang, Youn K. ^{[2
,3
]}

Lee, One-Sun ^{[2
]}

Deria, Pravas ^{[2
,4
]}

Kim, Sang Hoon ^{[1
]}

Park, Tae-Hong ^{[2
]}

Bonnell, Dawn A. ^{[1
]}

Saven, Jeffery G. ^{[2
]}

Therien, Michael J. ^{[4
]}

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

[3] Seoul Natl Univ, Div Chem & Mol Engn, Dept Chem, Coll Nat Sci, Seoul 151747, South Korea

[4] Duke Univ, Dept Chem, French Family Sci Ctr, Durham, NC 27708 USA

来源：

NANO LETTERS | 2009年 / 9卷 / 04期

关键词：

BAND-GAP FLUORESCENCE; SELECTIVE DISPERSION; POLYMER; ROPES; TRANSPORT; DYNAMICS;

D O I：

10.1021/nl8032334

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Amphiphilic, linear conjugated poly[p-{2,5-bis(3-propoxysulfonicacidsodiumsalt)}phenylene]ethynylene (PPES) efficiently disperses single-walled carbon nanotubes (SWNTs) under ultrasonication conditions into the aqueous phase. Vis-NIR absorption spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM) demonstrate that these solubilized SWNTs are highly individualized. AFM and TEM data reveal that the interaction of PPES with SWNTs gives rise to a self-assembled superstructure in which a polymer monolayer helically wraps the nanotube surface; the observed PPES pitch length (13 +/- 2 nm) confirms structural predictions made via molecular dynamics simulations. This work underscores design elements important for engineering well-defined nanotube-semiconducting polymer hybrid structures.

引用

页码：1414 / 1418

页数：5

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