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Comparative Study on Raman and Photoluminescence Spectra of Carbon Nanotubes Dispersed in Different Surfactant Solutions
- Authors
- Park, June; Yang, Hojung; Seong, Maeng-Je
- Issue Date
- Apr-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Carbon nanotube; Surfactant; Dispersion; Photoluminescence; Raman
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.60, no.8, pp 1301 - 1304
- Pages
- 4
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 60
- Number
- 8
- Start Page
- 1301
- End Page
- 1304
- ISSN
- 0374-4884
- Abstract
- Raman and photoluminescence (PL) spectra of HiPCO and CoMoCat single-walled carbon nanotubes (SWCNTs) dispersed in 1 wt% aqueous surfactant solutions with five different surfactants were studied. The SWCNT suspensions exhibit almost the same Raman spectra, regardless of the surfactant used, but the PL peak positions of all the observed (7,5), (6,5), (8,3), (9,1), and (6,4) SWCNTs show strong surfactant-dependent shifts as large as similar to 19 meV, known as solvatochromic shifts. For SWCNTs dispersed in deoxycholate sodium salts and sodium dodecyl sulfate solutions, the amount of the solvatochromic shift decreases as the excitation laser power is increased.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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