| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10666540 | Materials Letters | 2005 | 4 Pages |
Abstract
C60 bonded poly(N-vinylcarbazole) (PVK) has been synthesized by C60Cln (the average value of n is 20; C60/C70=85:15)/CuCl/2,2â²-bipyridine (Bpy) catalyst system. The molecular distribution curve determined by gel permeation chromatography (GPC) with RI and UV dual detector and 1H-nuclear magnetic resonance (1H-NMR) of the C60-PVK verified that the polymerization mechanism was atom transfer radical polymerization (ATRP). The optical-limiting properties of C60/C70-PVK and C60-PVK with different C60 content were measured via a nanosecond Nd:YAG pulse laser system at a wavelength of 532 nm. The experimental results demonstrated that the optical-limiting behavior of C60-PVK and C60/C70-PVK was better than that of C60Cln, C60/C70Cln and approached to pristine C60. The optical-limiting performance was improved upon the addition of increasing concentrations of C60 (C60/C70) in C60-PVK (C60/C70-PVK).
Keywords
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Jing Hua, Weihai Yang, Yunji Zhu, Zhixin Guo, Haiqiang Yang, Ling Xu, Dianbao Chen,