Enhancement of Photoluminescence from Semiconducting Nanotubes in Aqueous Suspensions due to Cysteine and Dithiothreitol Doping: Influence of the Sonication Treatment

Table 1 PL increase values (given as (I _S/I ₀−1) × 100 %) for titration with cysteine and DTT at 10⁻³ M

Nanotube chirality	Sonication (min)	Cysteine (%)	DTT (%)
(6,5)	30	+36	+55
(6,5)	90	+148	+156
(6,4)	30	+22	+30
(6,4)	90	+39	+42