Supramolecular interactions of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co- thiophene] with single-walled carbon nanotubes

Nanotechnology Reviews

article

Ping Zhang¹  Wenhui Yi¹  Hao Xu¹  Chao Gao²  Jin Hou³  Weiqiu Jin¹  Yue Lei¹  Xun Hou¹ 

[1] Key Laboratory for Information Photonic Technology of ShaanXi Province, School of Information and Electronics Engineering and Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University;State Key Laboratory of Fluorine and Nitrogen Chemicals, Center for Optic-Electronic Materials, Xi’an Modern Chemistry Research Institute;Department of Pharmacology, School of Basic Medical Sciences, Xi’an Medical University

关键词: conjugated polymer;    energy transfer;    photophysical properties;    semiconducting single-walled carbon nanotubes;   

DOI  :  10.1515/ntrev-2018-0041

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Efficient selective extraction of semiconducting single-walled carbon nanotubes (s-SWCNTs) from as-synthesized SWCNTs is essential for their electronic and photovoltaic applications. In this study, we used a relatively simple copolymer backbone structure of poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-thiophene] (PFT) for the selective extraction of s-SWCNTs from HiPCO SWCNTs. The absorption and Raman spectroscopies indicated that the PFT-sorted s-SWCNTs had high purity which was far beyond the sensitivity of the spectrometers. Photoluminescence excitation spectroscopy showed that PFT mainly extracted the chiralities of (n,m)=(9,5), (8,6), (7,5), and (10,5) s-SWCNTs with the ratios of about 53.1%, 24.8%, 11.5%, and 10.5%, respectively. Both steady-state and transient optical spectroscopies suggested that there was a strong interaction between PFT and s-SWCNTs. Molecular dynamics simulation results agreed well with the experimental data. Additionally, the photoinduced energy transfer behavior of the PFT-wrapped s-SWCNT resultant hybrid was assessed. This work indicated that the prepared PFT-wrapped s-SWCNT hybrid material was attractive for organic photovoltaic devices.

【 授权许可】

CC BY