Citation: Mei-fang Liu, Yu-lan Chen, Bo Zhu, Yang Han, Wei-guo Huang, Chun Du, Zhi-shan Bo. SYNTHESIS OF POLYFLUORENES BEARING LATERAL PYRENE-TERMINATED ALKYL CHAINS FOR DISPERSION OF SINGLE-WALLED CARBON NANOTUBES[J]. Chinese Journal of Polymer Science, ;2012, 30(3): 405-414. doi: 10.1007/s10118-012-1131-5 shu

SYNTHESIS OF POLYFLUORENES BEARING LATERAL PYRENE-TERMINATED ALKYL CHAINS FOR DISPERSION OF SINGLE-WALLED CARBON NANOTUBES

Received Date: 31 May 2011
Revised Date: 16 July 2011

Fund Project: This work was financially supported by the NSF of China (Nos. 20834006 and 50821062) and the National Basic Research Program of China (973 Program: 2009CB623601).

Two kinds of polyfluorenes bearing two lateral pyrene terminated alkyl chains and two alkyl chains per repeating unit were synthesized by Suzuki polycondensation and used to disperse single-walled carbon nanotubes (SWCNT) in organic solvents. Stable polymer-SWCNT complex can be formed via the multivalent - stacking interaction of the lateral pyrene functional groups and the polyfluorene backbone with the outer surface of carbon nanotubes; meanwhile the lateral alkyl chains can impart good solubility to the complex. As expected, polyfluorenes bearing lateral pyrene functional groups and octyl chains exhibited much higher carbon nanotube solubility in common organic solvents than the corresponding polyfluorenes bearing only octyl chains. Photophysical studies indicated that the formation of polymer-SWCNT complex can effectively quench the fluorescence of polyfluorenes.
- Carbon Nanotubes
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