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Dielectrophoretic manipulation of fluorescing single‐walled carbon nanotubes
Author(s) -
Mureau Natacha,
Mendoza Ernest,
Silva S. Ravi P.
Publication year - 2007
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200600607
Subject(s) - carbon nanotube , chromophore , materials science , stacking , fluorescence , nanotechnology , electrode , nanotube , chemical engineering , chemistry , photochemistry , organic chemistry , optics , physics , engineering
We investigate the behavior of fluorescing single‐walled carbon nanotubes (SWCNTs) under dielectrophoretic conditions and demonstrate their collection with fluorescence microscopy. SWCNTs are dispersed in water with the aid of a nonionic surfactant, Triton X‐100, and labeled through noncovalent binding with the dye 3,3′‐dihexyloxacarbocyanine iodide (diOC 6 ). The chromophore's affinity to the SWCNTs is due to π ‐stacking interactions. Carbon nanotube (CNT) localization is clearly identified on the fluorescence images, showing that the nanotubes concentrate between the electrodes and align along the electric field lines.