Photoluminescence and Raman spectra of the DOC-functionalized SWCNTs before and after adding metal particles. Both Raman spectra do not show any change after adding (a and d) gold, (b and e) cobalt, and (c and f) nickel particles. Excitation laser wavelength was 532 nm for all spectra. All the ‘after’ spectra were taken 180 min after adding metal particles.
Kim et al. Nanoscale Research Letters 2014 9:85 doi:10.1186/1556-276X-9-85