Gaufrès E, Tang NY, Favron A, Allard C1, Lapointe F, Jourdain V2, Tahir S2, Brosseau CN, Leonelli R, Martel R.
ACS Nano. 2016 Nov 22;10(11):10220-10226. Epub 2016 Oct 31.Liquid-phase encapsulation of α-sexithiophene (6T) molecules inside individualized single-walled carbon nanotubes (SWCNTs) is investigated using Raman imaging and spectroscopy. By taking advantage of the strong Raman response of this system, we probe the encapsulation isotherms at 30 and 115 °C using a statistical ensemble of SWCNTs deposited on a oxidized silicon substrate. Two distinct and sequential stages of encapsulation are observed: Stage 1 is a one-dimensional (1D) aggregation of 6T aligned head-to-tail inside the nanotube, and stage 2 proceeds with the assembly of a second row, giving pairs of aligned 6Ts stacked together side-by-side. Read More