Enrichment of Large-Diameter Single-Walled Carbon Nanotubes (SWNTs) with Metallo-Octaethylporphyrins.

Enrichment of Large-Diameter Single-Walled Carbon Nanotubes (SWNTs) with Metallo-Octaethylporphyrins.
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用金属八乙基卟啉富集大直径单壁碳纳米管 (SWNT)

DOI:
10.3390/ma6083064
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发表时间:
2013-07-24
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Wang F
Wang F
中科院分区:
其他
文献类型:
--
作者:
Li Y;Rahman AFMM;Liu G;Xiong Z;Koezuka K;Xu Z;Komatsu N;Wang F

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我们在这里报告了详细的实验研究单壁碳纳米管(SWNTs)与四种不同的金属八乙基卟啉(MOEPs)的非共价功能化。已经发现,MOEP的中心金属的身份强烈影响单壁碳纳米管的增溶。MnOEPs和ZnOEPs成功地提取了甲醇中的单壁碳纳米管,如吸收光谱所证实的,而CoOEPs和CuOEPs根本不能提取单壁碳纳米管。原子力显微镜(AFM)的研究表明,大的单壁碳纳米管束可以剥离成单独的单壁碳纳米管或非常小的束与ZnOEP分子的络合。对于单壁碳纳米管的富集,ZnOEPs和MnOEPs对76-CoMoCAT显示出相似的直径辨别能力,提供了具有相对大直径的提取的单壁碳纳米管。
We report here a detailed experimental investigation on noncovalent functionalization of single-walled carbon nanotubes (SWNTs) with four different metallo-octaethylporphyrins (MOEPs). It has been found that the identity of the center metal of MOEP strongly influences the solubilization of SWNTs. MnOEPs and ZnOEPs successfully extracted SWNTs in methanol, as confirmed by absorption spectroscopy, while CoOEPs and CuOEPs were not able to extract SWNTs at all. Atomic force microscopy (AFM) studies revealed that large SWNTs bundles could be exfoliated into either individual SWNTs or very small bundles by complexation with ZnOEP molecules. As for enrichment of SWNTs, ZnOEPs and MnOEPs show similar diameter discrimination ability toward 76-CoMoCAT, providing the extracted SWNTs with relatively large diameters.
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