Nanoengineering Coaxial Carbon Nanotube–Dual-Polymer Heterostructures
Posted on 2012-07-24 - 00:00
We describe studies of new nanostructured materials consisting of carbon nanotubes wrapped in sequential coatings of two different semiconducting polymers, namely, poly(3-hexylthiophene) (P3HT) and poly(9,9′-dioctylfluorene-co-benzothiadiazole) (F8BT). Using absorption spectroscopy and steady-state and ultrafast photoluminescence measurements, we demonstrate the role of the different layer structures in controlling energy levels and charge transfer in both solution and film samples. By varying the simple solution processing steps, we can control the ordering and proportions of the wrapping polymers in the solid state. The resulting novel coaxial structures open up a variety of new applications for nanotube blends and are particularly promising for implementation into organic photovoltaic devices. The carbon nanotube template can also be used to optimize both the electronic properties and morphology of polymer composites in a much more controlled fashion than achieved previously, offering a route to producing a new generation of polymer nanostructures.
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Stranks, Samuel D.; Yong, Chaw-Keong; Alexander-Webber, Jack A.; Weisspfennig, Christian; Johnston, Michael B.; Herz, Laura M.; et al. (2016). Nanoengineering Coaxial Carbon Nanotube–Dual-Polymer Heterostructures. ACS Publications. Collection. https://doi.org/10.1021/nn301133v
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AUTHORS (7)
SS
Samuel D. Stranks
CY
Chaw-Keong Yong
JA
Jack A. Alexander-Webber
CW
Christian Weisspfennig
MJ
Michael B. Johnston
LH
Laura M. Herz
RN
Robin J. Nicholas
KEYWORDS
absorption spectroscopyenergy levelsultrafast photoluminescence measurementsnanotube blendsphotovoltaic devicessemiconducting polymerssequential coatingslayer structuressolution processing stepspolymer nanostructurescharge transferpolymer compositesF 8BTnanostructured materialsP 3HTcarbon nanotubesfilm samplescarbon nanotube template