Enhanced Optical Limiting Effects in Porphyrin-Covalently Functionalized Single-Walled Carbon Nanotubes


  • This work was supported by the Natural Science Foundation of China (10574075, 60708020, and 20421202), the Chinese National Key Basic Research Special Fund (2006CB921703), the 973 Program (2006CB932900) and the Program for Changjiang Scholars and Innovative Research Team in University.


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Single-walled carbon nanotubes covalently functionalized with porphyrins present enhanced optical limiting effects. Both porphyrins and SWNTs are good candidates for optical limiting applications. The porphyrin-covalently functionalized SWNTs offer superior performance to C60, the individual SWNTs, and porphyrins because of a combined nonlinear mechanism and photoinduced electron or energy transfer between the porphyrin moiety and the SWNTs.