Figure 3
From: pH induced reversible assembly of DNA wrapped carbon nanotubes
Reversible assembly and disassembly of SWCNTs by adjusting pH between 5.0 and 8.0. Solutions in tubes a, c, e, and g are at pH 5.0, and tubes b, d, and f are at pH 8.0. Three cycles of assembly and disassembly of SWCNTs by pH switching are demonstrated here. Centrifugations at 2000 g for 10 s were applied after each pH changing to make the aggregates more visually discernible.