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Photoinduced Dispersibility Tuning of Carbon Nanotubes by a Water‐Soluble Stilbene as a Dispersant
Author(s) -
Matsuzawa Yoko,
Kato Haruhisa,
Ohyama Harumi,
Nishide Daisuke,
Kataura Hiromichi,
Yoshida Masaru
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201101960
Subject(s) - dispersant , carbon nanotube , cationic polymerization , materials science , dispersion (optics) , aqueous solution , derivative (finance) , nanotechnology , chemical engineering , organic chemistry , polymer chemistry , chemistry , business , physics , finance , engineering , optics
A water‐soluble stilbene derivative with cationic charges enables tuning of the dispersibility of the single‐walled carbon nanotubes (SWNTs) in aqueous solution by photoirradiation. The nearly coplanar core of the stilbene dispersant interacts with the SWNTs via π – π interactions, resulting in a stable dispersion of the SWNTs. Photoinduced cyclization for the dispersant‐triggered reprecipitation of the SWNTs is due to detachment of the dispersant from SWNTs surfaces.