Abstract
Water-soluble hybrids of multi-walled carbon nanotubes (MWNTs) and gold nanoparticles(Au@MWNTs) were fabricated via the in situ solution method and characterized bytransmission electron microscopy (TEM), scanning electron microscopy (SEM), andenergy dispersive x-ray spectroscopy (EDS). An optoelectronic-active compound ofN,N′-bi(2-mercaptoethyl)-perylene-3,4,9,10-tetracarboxylic diimide (MEPTCDI) wasemployed 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 alimited small range with high stability via this in situ fabrication approach. Thehybrid formation mechanism was proposed by making comparison with otherhybrids, employing various organic or organic groups as interlinkers, and wasfurther demonstrated by TEM, ultraviolet–visible (UV–vis), and atomic absorptionmeasurements. The optical properties of the Au@MWNTs hybrids were studied, and itwas found that the hybrid exhibited strong visible luminescence under UV lampirradiation, which might extend its potential applications to biological labeling,etc.
Published Version
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