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Single-Walled Carbon Nanotube Dispersant — Photochemically Controllable Dispersion and Aggregation


• Strong interaction to the surface of single-walled carbon nanotube (SWCNT)
• Positive charge on the stilbene core enables SWCNT to disperse in aqueous solution
• UV irradiation makes closure of the stilbene moiety and elimination from the SWCNT surface which enables SWCNT to aggregate
• Precisely controllable dispersion by photo irradiation
• After the aggregation, the dispersant can be easily removed by filtration, etc.

Possible Applications

• Purification of SWCNT by combining dispersion in solution, centrifugation and photo-induced aggregation
• Development of new composite material for CNT-based film and paint

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This material was produced by collaboration with Dr. Yoko Matsuzawa at National Institute of Advanced Industrial Science and Technology (AIST).

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