Reversible surface oxidation and efficient luminescence quenching in semiconductor single-wall carbon nanotubes.
نویسندگان
چکیده
We have investigated reversible single-wall carbon nanotube (SWNT) oxidation by quantitative analysis of the oxide-induced absorption bleaching and luminescence quenching at low pH. These data, in combination with DFT structure calculations, suggest that the nanotube oxide is a 1,4-endoperoxide. At low pH, the endoperoxide protonates to create a hydroperoxide carbocation, introducing a hole in the SWNT valence band. Nanotube luminescence is extremely sensitive to quenching by hole-doping, while the absorption is relatively robust.
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 126 46 شماره
صفحات -
تاریخ انتشار 2004