Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers
Selective polymer wrapping is a promising approach to obtain high-chiral-purity single-walled carbon nanotubes (SWCNTs) needed in technical applications and scientific studies. We showed that among three fluorene-based polymers with different side-chain lengths and backbones, poly[(9,9-dihexylfluore...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/102389 http://hdl.handle.net/10220/18984 |
| _version_ | 1811678621075505152 |
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| author | Si, Rongmei Wei, Li Wang, Hong Su, Dingdian Mushrif, Samir H. Chen, Yuan |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Si, Rongmei Wei, Li Wang, Hong Su, Dingdian Mushrif, Samir H. Chen, Yuan |
| author_sort | Si, Rongmei |
| collection | NTU |
| description | Selective polymer wrapping is a promising approach to obtain high-chiral-purity single-walled carbon nanotubes (SWCNTs) needed in technical applications and scientific studies. We showed that among three fluorene-based polymers with different side-chain lengths and backbones, poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,10-anthracene)] (PFH-A) can selectively extract SWCNTs synthesized from the CoSO4/SiO2 catalyst, which results in enrichment of 78.3 % (9,8) and 12.2 % (9,7) nanotubes among all semiconducting species. These high-chiral-purity SWCNTs may find potential applications in electronics, optoelectronics, and photovoltaics. Furthermore, molecular dynamics simulations suggest that the extraction selectivity of PFH-A relates to the bending and alignment of its alkyl chains and the twisting of its two aromatic backbone units (biphenyl and anthracene) relative to SWCNTs. The strong π–π interaction between polymers and SWCNTs would increase the extraction yield, but it is not beneficial for chiral selectivity. Our findings suggest that the matching between the curvature of SWCNTs and the flexibility of the polymer side chains and the aromatic backbone units is essential in designing novel polymers for selective extraction of (n,m) species. |
| first_indexed | 2024-10-01T02:56:10Z |
| format | Journal Article |
| id | ntu-10356/102389 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:56:10Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1023892020-03-07T11:40:21Z Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers Si, Rongmei Wei, Li Wang, Hong Su, Dingdian Mushrif, Samir H. Chen, Yuan School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering Selective polymer wrapping is a promising approach to obtain high-chiral-purity single-walled carbon nanotubes (SWCNTs) needed in technical applications and scientific studies. We showed that among three fluorene-based polymers with different side-chain lengths and backbones, poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,10-anthracene)] (PFH-A) can selectively extract SWCNTs synthesized from the CoSO4/SiO2 catalyst, which results in enrichment of 78.3 % (9,8) and 12.2 % (9,7) nanotubes among all semiconducting species. These high-chiral-purity SWCNTs may find potential applications in electronics, optoelectronics, and photovoltaics. Furthermore, molecular dynamics simulations suggest that the extraction selectivity of PFH-A relates to the bending and alignment of its alkyl chains and the twisting of its two aromatic backbone units (biphenyl and anthracene) relative to SWCNTs. The strong π–π interaction between polymers and SWCNTs would increase the extraction yield, but it is not beneficial for chiral selectivity. Our findings suggest that the matching between the curvature of SWCNTs and the flexibility of the polymer side chains and the aromatic backbone units is essential in designing novel polymers for selective extraction of (n,m) species. 2014-03-27T04:56:50Z 2019-12-06T20:54:13Z 2014-03-27T04:56:50Z 2019-12-06T20:54:13Z 2014 2014 Journal Article Si, R., Wei, L., Wang, H., Su, D., Mushrif, S. H., & Chen, Y. (2014). Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers. Chemistry - An Asian Journal, 9(3), 868-877. 1861-4728 https://hdl.handle.net/10356/102389 http://hdl.handle.net/10220/18984 10.1002/asia.201301350 en Chemistry - an Asian journal 22584 © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | DRNTU::Engineering::Chemical engineering Si, Rongmei Wei, Li Wang, Hong Su, Dingdian Mushrif, Samir H. Chen, Yuan Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title | Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title_full | Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title_fullStr | Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title_full_unstemmed | Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title_short | Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers |
| title_sort | extraction of 9 8 single walled carbon nanotubes by fluorene based polymers |
| topic | DRNTU::Engineering::Chemical engineering |
| url | https://hdl.handle.net/10356/102389 http://hdl.handle.net/10220/18984 |
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