An electrochemical avenue to blue luminescent nanocrystals from multiwalled carbon nanotubes (MWCNTs)
An electrochemical avenue to blue luminescent nanocrystals from multiwalled carbon nanotubes (MWCNTs)
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DOI：
10.1021/ja0669070
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发表时间：
2007-01-31
影响因子：
15
通讯作者：
Ding, Zhifeng
中科院分区：
文献类型：
--
作者：
Zhou, Jigang;Booker, Christina;Ding, Zhifeng
首次以多壁碳纳米管（MWCNTs）为原料电化学制备了蓝色发光纳米晶体（NCs）。采用紫外可见光谱、光致发光光谱、拉曼光谱、x射线衍射光谱和高分辨率透射电镜对碳纳米管进行了表征。通过原位扫描电镜监测了电化学处理过程中MWCNTs的结构演变。由于MWCNTs是由卷曲的石墨烯层形成的，我们认为四丁基铵（TBA）阳离子很可能在电化学循环过程中插入到间隙和缺陷中，并破坏缺陷附近的管。
Blue luminescent nanocrystals (NCs) were prepared electrochemically from multiwalled carbon nanotubes (MWCNTs) for the first time. The carbon NCs were characterized by UV-vis, photoluminescence, Raman, XRD spectroscopy, and high-resolution transmission electron microscopy. The structure evolution of the MWCNTs during electrochemical treatments was monitored by SEM ex situ. Since the MWCNTs were formed with scrolled graphene layers, we propose that tetrabutyl ammonium (TBA) cations most probably intercalate into the gaps and the defects during electrochemical cycling and break the tubes near the defects.