“…As is shown in Fig. 2, no peak is observed in the UVevis spectrum ranging from 330 to 700 nm for aniline, MWCNT, and anilinee8 wt‰ MWCNTs mixture, however, new absorption peaks at about 350, 452, 518, and 559 nm are detected in anilineeMWCNT complexes, suggesting that anilineeMWCNT complexes have been successfully formed during the reflux process [23,24]. At elevated temperature, such as 184 C, MWCNT and aniline are believed to form a charge-transfer complex in its ground state because MWCNT is a good electron acceptor, whereas aniline is a fairly good electron donor, as evidenced by the appearance of the new absorptions.…”