Larger diameter selection of carbon nanotubes by two phase extraction using amphiphilic polymeric surfactant

Seokhyeon Son; Hyunjun Park; Woo Dong Jang; Sang Yong Ju

doi:10.1016/j.molliq.2022.120425

Larger diameter selection of carbon nanotubes by two phase extraction using amphiphilic polymeric surfactant

Seokhyeon Son, Hyunjun Park, Woo Dong Jang, Sang Yong Ju

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Aqueous two-phase extraction is instrumental for obtaining single-walled carbon nanotubes (SWNT) with uniform physical properties. This study reports that a nonionic amphiphilic poly(2-ethyloxazoline)-benzyl ether derivative (POBE-BzE) not only efficiently disperses SWNT in both water and p-xylene, but can also be utilized as a single-surfactant for partitioning SWNT in a water/p-xylene two-phase extraction in a diameter (d_t) selective manner. While individual POBE-BzE/SWNT dispersions exhibit similar photoluminescence positions from the SWNT, d_t-dependency occurs according to the solvent. Upon two-phase extraction, a d_t SWNT >0.9 nm was mainly extracted to the p-xylene layer, and its partition coefficient was investigated by varying the phase transfer catalyst or sodium chloride amounts, where sodium chloride served as a better transfer agent. The d_t selective behavior and its partition coefficient were rationalized by the tight and loose configurations of the BzE moiety in each medium. This novel amphiphilic polymeric surfactant and two-phase extraction may be useful for sorting SWNT and other nanomaterials according to their size.

Original language	English
Article number	120425
Journal	Journal of Molecular Liquids
Volume	367
DOIs	https://doi.org/10.1016/j.molliq.2022.120425
Publication status	Published - 2022 Dec 1

Bibliographical note

Funding Information:
This research was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science, and Technology (NRF-2022R1A2C1006932 and NRF-2020R1A4A101773711).

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry
Materials Chemistry

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10.1016/j.molliq.2022.120425

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title = "Larger diameter selection of carbon nanotubes by two phase extraction using amphiphilic polymeric surfactant",

abstract = "Aqueous two-phase extraction is instrumental for obtaining single-walled carbon nanotubes (SWNT) with uniform physical properties. This study reports that a nonionic amphiphilic poly(2-ethyloxazoline)-benzyl ether derivative (POBE-BzE) not only efficiently disperses SWNT in both water and p-xylene, but can also be utilized as a single-surfactant for partitioning SWNT in a water/p-xylene two-phase extraction in a diameter (dt) selective manner. While individual POBE-BzE/SWNT dispersions exhibit similar photoluminescence positions from the SWNT, dt-dependency occurs according to the solvent. Upon two-phase extraction, a dt SWNT >0.9 nm was mainly extracted to the p-xylene layer, and its partition coefficient was investigated by varying the phase transfer catalyst or sodium chloride amounts, where sodium chloride served as a better transfer agent. The dt selective behavior and its partition coefficient were rationalized by the tight and loose configurations of the BzE moiety in each medium. This novel amphiphilic polymeric surfactant and two-phase extraction may be useful for sorting SWNT and other nanomaterials according to their size.",

author = "Seokhyeon Son and Hyunjun Park and Jang, {Woo Dong} and Ju, {Sang Yong}",

note = "Funding Information: This research was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science, and Technology (NRF-2022R1A2C1006932 and NRF-2020R1A4A101773711). Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

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N1 - Funding Information: This research was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science, and Technology (NRF-2022R1A2C1006932 and NRF-2020R1A4A101773711). Publisher Copyright: © 2022 Elsevier B.V.

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N2 - Aqueous two-phase extraction is instrumental for obtaining single-walled carbon nanotubes (SWNT) with uniform physical properties. This study reports that a nonionic amphiphilic poly(2-ethyloxazoline)-benzyl ether derivative (POBE-BzE) not only efficiently disperses SWNT in both water and p-xylene, but can also be utilized as a single-surfactant for partitioning SWNT in a water/p-xylene two-phase extraction in a diameter (dt) selective manner. While individual POBE-BzE/SWNT dispersions exhibit similar photoluminescence positions from the SWNT, dt-dependency occurs according to the solvent. Upon two-phase extraction, a dt SWNT >0.9 nm was mainly extracted to the p-xylene layer, and its partition coefficient was investigated by varying the phase transfer catalyst or sodium chloride amounts, where sodium chloride served as a better transfer agent. The dt selective behavior and its partition coefficient were rationalized by the tight and loose configurations of the BzE moiety in each medium. This novel amphiphilic polymeric surfactant and two-phase extraction may be useful for sorting SWNT and other nanomaterials according to their size.

AB - Aqueous two-phase extraction is instrumental for obtaining single-walled carbon nanotubes (SWNT) with uniform physical properties. This study reports that a nonionic amphiphilic poly(2-ethyloxazoline)-benzyl ether derivative (POBE-BzE) not only efficiently disperses SWNT in both water and p-xylene, but can also be utilized as a single-surfactant for partitioning SWNT in a water/p-xylene two-phase extraction in a diameter (dt) selective manner. While individual POBE-BzE/SWNT dispersions exhibit similar photoluminescence positions from the SWNT, dt-dependency occurs according to the solvent. Upon two-phase extraction, a dt SWNT >0.9 nm was mainly extracted to the p-xylene layer, and its partition coefficient was investigated by varying the phase transfer catalyst or sodium chloride amounts, where sodium chloride served as a better transfer agent. The dt selective behavior and its partition coefficient were rationalized by the tight and loose configurations of the BzE moiety in each medium. This novel amphiphilic polymeric surfactant and two-phase extraction may be useful for sorting SWNT and other nanomaterials according to their size.

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Larger diameter selection of carbon nanotubes by two phase extraction using amphiphilic polymeric surfactant

Abstract

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