Selective dispersion of highly pure large-diameter semiconducting carbon nanotubes by a flavin for thin-film transistors

Minsuk Park, Somin Kim, Hyeokjae Kwon, Sukhyun Hong, Seongil Im, Sang-Yong Ju

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Scalable and simple methods for selective extraction of pure, semiconducting (s) single-walled carbon nanotubes (SWNTs) is of profound importance for electronic and photovoltaic applications. We report a new, one-step procedure to obtain respective large-diameter s- and metallic (m)-SWNT enrichment purity in excess of 99% and 78%, respectively, via interaction between the aromatic dispersing agent and SWNTs. The approach utilizes N-dodecyl isoalloxazine (FC12) as a surfactant in conjunction with sonication and benchtop centrifugation methods. After centrifugation, the supernatant is enriched in s-SWNTs with less carbonaceous impurities, whereas precipitate is enhanced in m-SWNTs. In addition, the use of an increased centrifugal force enhances both the purity and population of larger diameter s-SWNTs. Photoinduced energy transfer from FC12 to SWNTs is facilitated by respective electronic level alignment. Owing to its peculiar photoreduction capability, FC12 can be employed to precipitate SWNTs upon UV irradiation and observe absorption of higher optical transitions of SWNTs. A thin-film transistor prepared from a dispersion of enriched s-SWNTs was fabricated to verify electrical performance of the sorted sample and was observed to display p-type conductance with an average on/off ratio over 106 and an average mobility over 10 cm2/V·s.

Original languageEnglish
Pages (from-to)23270-23280
Number of pages11
JournalACS Applied Materials and Interfaces
Volume8
Issue number35
DOIs
Publication statusPublished - 2016 Sep 7

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Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
Thin film transistors
Carbon nanotubes
Centrifugation
Precipitates
4,6-dinitro-o-cresol
Optical transitions
Sonication
Surface-Active Agents
Energy transfer
Surface active agents
Sand
Irradiation
Impurities

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

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abstract = "Scalable and simple methods for selective extraction of pure, semiconducting (s) single-walled carbon nanotubes (SWNTs) is of profound importance for electronic and photovoltaic applications. We report a new, one-step procedure to obtain respective large-diameter s- and metallic (m)-SWNT enrichment purity in excess of 99{\%} and 78{\%}, respectively, via interaction between the aromatic dispersing agent and SWNTs. The approach utilizes N-dodecyl isoalloxazine (FC12) as a surfactant in conjunction with sonication and benchtop centrifugation methods. After centrifugation, the supernatant is enriched in s-SWNTs with less carbonaceous impurities, whereas precipitate is enhanced in m-SWNTs. In addition, the use of an increased centrifugal force enhances both the purity and population of larger diameter s-SWNTs. Photoinduced energy transfer from FC12 to SWNTs is facilitated by respective electronic level alignment. Owing to its peculiar photoreduction capability, FC12 can be employed to precipitate SWNTs upon UV irradiation and observe absorption of higher optical transitions of SWNTs. A thin-film transistor prepared from a dispersion of enriched s-SWNTs was fabricated to verify electrical performance of the sorted sample and was observed to display p-type conductance with an average on/off ratio over 106 and an average mobility over 10 cm2/V·s.",
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Selective dispersion of highly pure large-diameter semiconducting carbon nanotubes by a flavin for thin-film transistors. / Park, Minsuk; Kim, Somin; Kwon, Hyeokjae; Hong, Sukhyun; Im, Seongil; Ju, Sang-Yong.

In: ACS Applied Materials and Interfaces, Vol. 8, No. 35, 07.09.2016, p. 23270-23280.

Research output: Contribution to journalArticle

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AU - Kim, Somin

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AB - Scalable and simple methods for selective extraction of pure, semiconducting (s) single-walled carbon nanotubes (SWNTs) is of profound importance for electronic and photovoltaic applications. We report a new, one-step procedure to obtain respective large-diameter s- and metallic (m)-SWNT enrichment purity in excess of 99% and 78%, respectively, via interaction between the aromatic dispersing agent and SWNTs. The approach utilizes N-dodecyl isoalloxazine (FC12) as a surfactant in conjunction with sonication and benchtop centrifugation methods. After centrifugation, the supernatant is enriched in s-SWNTs with less carbonaceous impurities, whereas precipitate is enhanced in m-SWNTs. In addition, the use of an increased centrifugal force enhances both the purity and population of larger diameter s-SWNTs. Photoinduced energy transfer from FC12 to SWNTs is facilitated by respective electronic level alignment. Owing to its peculiar photoreduction capability, FC12 can be employed to precipitate SWNTs upon UV irradiation and observe absorption of higher optical transitions of SWNTs. A thin-film transistor prepared from a dispersion of enriched s-SWNTs was fabricated to verify electrical performance of the sorted sample and was observed to display p-type conductance with an average on/off ratio over 106 and an average mobility over 10 cm2/V·s.

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