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Water-soluble and highly fluorescent hybrids of multi-walled carbon nanotubes with uniformly arranged gold nanoparticles

机译：具有均匀排列的金纳米粒子的多壁碳纳米管的水溶性和高荧光杂交体

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摘要

Water-soluble hybrids of multi-walled carbon nanotubes (MWNTs) and gold nanoparticles (Au@ MWNTs) were fabricated via the in situ solution method and characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS). An optoelectronic-active compound of N,N'-bi(2-mercaptoethyl)perylene-3,4,9,10-tetracarboxylic diimide (MEPTCDI) was employed as interlinker and stabilizer for the formation of the Au@MWNTs hybrids. The size of Au nanoparticles in the hybrids can be controlled and decreased to a limited small range with high stability via this in situ fabrication approach. The hybrid formation mechanism was proposed by making comparison with other hybrids, employing various organic or organic groups as interlinkers, and was further demonstrated by TEM, ultraviolet-visible (UV-vis), and atomic absorption measurements. The optical properties of the Au@MWNTs hybrids were studied, and it was found that the hybrid exhibited strong visible luminescence under UV lamp irradiation, which might extend its potential applications to biological labeling, etc.
机译：通过原位溶液法制备了多壁碳纳米管（MWNTs）和金纳米颗粒（Au @ MWNTs）的水溶性杂化物，并通过透射电子显微镜（TEM），扫描电子显微镜（SEM）和能量色散x表征射线光谱法（EDS）。 N，N'-联（2-巯基乙基）per-3,4,9,10-四羧酸二酰亚胺（MEPTCDI）的光电活性化合物用作交联剂和稳定剂，以形成Au @ MWNTs杂化物。通过这种原位制备方法，可以控制杂化物中金纳米颗粒的大小，并以高稳定性将其减小到有限的小范围内。通过与其他杂化剂比较，提出杂化剂形成机理，采用各种有机基团或有机基团作为交联剂，并通过TEM，紫外可见光（UV-vis）和原子吸收测量进一步证实。研究了Au @ MWNTs杂合体的光学性质，发现该杂合体在紫外灯照射下表现出较强的可见光发光，可能将其潜在的应用扩展到生物标记等领域。

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