Author/Authors :
Sun، نويسنده , , Ya-Ping and Zhou، نويسنده , , Bing and Henbest، نويسنده , , Kevin and Fu، نويسنده , , Kefu and Huang، نويسنده , , Weijie and Lin، نويسنده , , Yi and Taylor، نويسنده , , Shelby and Carroll، نويسنده , , David L، نويسنده ,
Abstract :
Luminescence anisotropy of functionalized single-wall (SWNT) and multiple-wall (MWNT) carbon nanotubes in solution and in polymeric thin-film matrix was investigated. The results show that the absorption and emission dipole moments are intrinsically collinear, corresponding to the limiting positive anisotropy. The observation of strong luminescence polarization for the functionalized carbon nanotubes in room-temperature chloroform is consistent with the polymeric nature of these luminescent species; and the partial depolarization in solution is rationalized in terms of the flexibility of the nanotubes.
