Abstract
A new poly(N-vinylcarbazole)-covalently grafted single-wall carbon nanotube (SWNT–PVK)hybrid material was synthesized by an in situ anionic polymerization reaction ofN-vinylcarbazole and the negatively charged SWNTs. Incorporation of the PVK moietiesonto the SWNTs’ surface considerably improves the solubility and processability ofSWNTs. At the same level of linear transmission, the SWNT–PVK dispersions show betteroptical limiting performance than the pristine SWNT dispersions, which shows thismaterial to be a suitable candidate for viable optical limiting devices. Micro-plasma and/ormicro-bubble induced nonlinear scattering is considered as the main mechanism for opticallimiting.
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