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Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers
นักวิจัย : Si, Rongmei , Wei, Li , Wang, Hong , Su, Dingdian , Mushrif, Samir H. , Chen, Yuan
คำค้น : DRNTU::Engineering::Nanotechnology
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : 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 , http://hdl.handle.net/10220/19156 , http://dx.doi.org/10.1002/asia.201301350
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Chemistry - An Asian Journal
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

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.

บรรณานุกรม :
Si, Rongmei , Wei, Li , Wang, Hong , Su, Dingdian , Mushrif, Samir H. , Chen, Yuan . (2557). Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Si, Rongmei , Wei, Li , Wang, Hong , Su, Dingdian , Mushrif, Samir H. , Chen, Yuan . 2557. "Extraction of (9,8) single-walled carbon nanotubes by fluorene-based polymers".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
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."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
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. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.