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Synthesis and Properties of a Water‐Soluble Single‐Walled Carbon Nanotube–Poly( m ‐aminobenzene sulfonic acid) Graft Copolymer
Author(s) -
Zhao B.,
Hu H.,
Haddon R. C.
Publication year - 2004
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200304440
Subject(s) - materials science , carbon nanotube , sulfonic acid , covalent bond , copolymer , polymer , amide , nanotube , polymer chemistry , absorption spectroscopy , absorption (acoustics) , chemical engineering , organic chemistry , nanotechnology , composite material , chemistry , optics , engineering , physics
Poly( m ‐aminobenzene sulfonic acid) (PABS), was covalently bonded to single‐walled carbon nanotubes (SWNTs) to form a water‐soluble nanotube–polymer compound (SWNT–PABS). The conductivity of the SWNT–PABS graft copolymer was about 5.6 × 10 –3 S cm –1 , which is much higher than that of neat PABS (5.4 × 10 –7 S cm –1 ). The mid‐IR spectrum confirmed the formation of an amide bond between the SWNTs and PABS. The 1 H NMR spectrum of SWNT–PABS showed the absence of free PABS, while the UV/VIS/NIR spectrum of SWNT–PABS showed the presence of the interband transitions of the semiconducting SWNTs and an absorption at 17 750 cm –1 due to the PABS addend.