title: Photoluminescence study of encapsulated dye inside single-walled carbon nanotubes dispersed in solvents.
abstract: Photo-luminescent dye, 1-(2-amino-phenyl) naphthalene-2-ylamine (APNA) molecules were synthesized and encapsulated inside single-walled carbon nanotubes (APNA@SWNTs) in vacuum. Here we measured X-ray diffraction (XRD) pattern and attenuated total reflectance (ATR) spectrum to confirm the encapsulation of APNA molecules inside SWNTs. Strong photoluminescence (PL) spectrum was observed around 400 nm at an excitation of 326 nm. We employed the PL intensity of the dye to reveal suspension stability of SWNTs in solvents. The intensity of PL spectrum increased as a function of SWNTs suspension stability, i.e., the PL intensity was proportional to suspension stability of SWNTs in various solvents.
authors: Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Haengdang-dong 17, Seoul 133-791, Korea.
authors: Taehee
authors: T
authors: Park
authors: Jungwoo
authors: J
authors: Lee
authors: Jongtaek
authors: J
authors: Lee
authors: Mira
authors: M
authors: Jang
authors: Whikun
authors: W
authors: Yi