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Designing a spiropyran-based molecular switch for carbon nanotube functionalization: Influence of anchor groups and tube–switch separation

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Abstract

Molecular switch compounds, consisting of aromatic anchoring groups connected to a spiropyran moiety, are exploited for carbon nanotube functionalization. The effect of the different anchor groups on sample distribution and debundling efficiency is investigated as well as the influence of the anchor–switch distance and hence tube–switch separation. Morphologically similar anchor groups result in similar chiral compositions of the sample. With smaller separation, the tube–switch interaction strength increases as well as the lifetime of the ring opened isomer.

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