Exfoliation of single-walled carbon nanotubes induced by the structural effect of perylene derivatives and their optoelectronic properties
- Authors
- Lee, Jin-Hyon; Yoon, Seon-Mi; Kim, Ki Kang; Cha, In-Sung; Park, Young Jun; Choi, Jae-Young; Lee, Young Hee; Paik, Ungyu
- Issue Date
- Oct-2008
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v.112, no.39, pp.15267 - 15273
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY C
- Volume
- 112
- Number
- 39
- Start Page
- 15267
- End Page
- 15273
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177864
- DOI
- 10.1021/jp804485b
- ISSN
- 1932-7447
- Abstract
- We designed an innovative and effective dispersion system for single-walled carbon nanotubes (SWCNTs) by introducing an exfoliation concept. Perylene derivatives were used as organic additives for dispersion of the SWCNTs. The SWCNT solutions were characterized with UV-vis-NIR absorption spectroscopy and transmission electron microscopy. Our newly designed dispersion system improved the degree of dispersion of the SWCNTs more than 10% and showed much better dispersion stability, compared to a conventional dispersion system. Furthermore, from the optoelectronic properties, we found that our designed dispersion system reduced the sheet resistance by about 50% at similar transmittance. Our analysis demonstrated that our designed dispersion system could provide a well-dispersed SWCNTs solution with long-term dispersion stability even under an extremely low dispersant concentration for dispersion of SWCNTs (weight ratio of CNTs/organic additive = 1, concentration of organic additives = 0.1 g/L, sonic treatment = 6 h).
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