Photoluminescence from Exciton Energy Transfer of Single-Walled Carbon Nanotube Bundles Dispersed in Ionic Liquids

Photoluminescence from Exciton Energy Transfer of Single-Walled Carbon Nanotube Bundles Dispersed in Ionic Liquids

Single-walled carbon nanotubes (SWNTs) can be dispersed into fine bundles in imidazolium-based ionic liquids (ILs) by simple mechanical grinding. Photoluminescence (PL) of the exciton energy migration from larger band gap semiconducting donor nanotubes to smaller band gap semiconducting acceptor nan...

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Veröffentlicht in:Journal of physical chemistry. C 2012-10, Vol.116 (41), p.22028-22035
Hauptverfasser: Yang, Juan, Yang, Nuoya, Zhang, Daqi, Wang, Xiao, Li, Yilun, Li, Yan
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Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Nanocrystals and nanoparticles
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
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container_end_page 22035
container_issue 41
container_start_page 22028
container_title Journal of physical chemistry. C
container_volume 116
creator Yang, Juan
Yang, Nuoya
Zhang, Daqi
Wang, Xiao
Li, Yilun
Li, Yan
description Single-walled carbon nanotubes (SWNTs) can be dispersed into fine bundles in imidazolium-based ionic liquids (ILs) by simple mechanical grinding. Photoluminescence (PL) of the exciton energy migration from larger band gap semiconducting donor nanotubes to smaller band gap semiconducting acceptor nanotubes within the same SWNT bundle is clearly observed and can be explained by the Förster resonance energy transfer (FRET) mechanism. This offers a simple way to relatively brighten up the PL of those less populated, large diameter, small band gap SWNT species. Taking surfactant sodium dodecyl sulfate (SDS)-dispersed samples as a control of individually dispersed SWNTs, incomplete thermalization before exciton recombination is demonstrated in IL-dispersed SWNT bundles.
doi_str_mv 10.1021/jp306515a
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Nanocrystals and nanoparticles
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
title Photoluminescence from Exciton Energy Transfer of Single-Walled Carbon Nanotube Bundles Dispersed in Ionic Liquids
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