First, a purified dSWCNT solution (0.02 nM) was immobilized on a glass surface for 1 to 2 hours to image single SWCNTs. The residual SWCNT solution was removed, and the surface washed with water 2-3 times to remove unbound SWCNTs. For imaging, an Olympus IX73 microscope with 100x objective lens (UPLSAPO100XS, Olympus, Tokyo, Japan) was employed. The samples were excited at 561 nm with a 100 mW laser (Cobolt Jive™ laser, Cobolt AB, Solna, Sweden). The images were acquired with an Andor Zyla 5.5 sCMOS camera (Andor Technology Ltd., Belfast, UK) at 1s exposure time. In this case, a short pass filter (AHF analysentechnik AG, 935/170 BrightLine HC) which wavelength range is from 850 nm to 1020 nm was employed to block E11 * intensity. While for the signal of E11 * , a long pass filter (Thorlabs, FELH1050) was used to exclude the signal below 1050 nm.