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首页> 外文期刊>Optics Letters >Core-shell nanostructures of covalently grafted polyaniline multi-walled carbon nanotube hybrids for improved optical limiting
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Core-shell nanostructures of covalently grafted polyaniline multi-walled carbon nanotube hybrids for improved optical limiting

机译:共价接枝聚苯胺多壁碳纳米管杂化物的核-壳纳米结构,可改善光学限制

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摘要

Polyaniline multi-walled carbon nanotube (MWCNT) hybrids are synthesized by the in situ polymerization of aniline in the presence of phenylenediamine-functionalized MWCNTs. Along with the aniline monomer, the aniline moiety on the surface of phenylenediamine-functionalized MWCNTs also participates in the polymerization and acts as a covalent bridge between the polyaniline and the MWCNT. The photoluminescence quenching in the hybrid, due to the electron transfer between the polyaniline and the MWCNT, and the resulting improvement in optical limiting are also discussed. The large nonlinear absorption coefficient with the low-limiting threshold of the hybrids compared to polyaniline is attributed to the combined nonlinear optical (NLO) mechanisms and the photo-induced electron transfer interactions. (C) 2014 Optical Society of America
机译:聚苯胺多壁碳纳米管(MWCNT)杂化物是在苯二胺官能化的MWCNT存在下通过苯胺的原位聚合合成的。与苯胺单体一起,苯二胺官能化的MWCNT表面上的苯胺部分也参与聚合反应,并充当聚苯胺和MWCNT之间的共价桥。还讨论了由于聚苯胺和MWCNT之间的电子转移,在杂化物中的光致发光猝灭,以及由此带来的光学极限的改善。与聚苯胺相比,杂化剂的下限阈值低而具有较大的非线性吸收系数,这归因于非线性光学(NLO)机理和光诱导的电子转移相互作用的结合。 (C)2014年美国眼镜学会

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