Nanoparticles gold nanorods

Hernandez J, SoUa-GuUon J, Herrero E, Aldaz A, Feliu JM. 2005. Characterization of the surface structure of gold nanoparticles and nanorods using strucmre sensitive reactions. J Phys ChemB 109 12651-12654. 

Scheme 2 Schematic of a seed-mediated, surfactant-assisted gold nanorod synthesis. The small black dots represent Ag+ ions, the orange stars are CTAB molecules forming micelles, the yellow circles and green squares are AuCLf and AuC12 , respectively, forming complexes with the CTAB micelles. Freshly-prepared gold nanoparticle seeds are injected into the growth solution in the final step of the nanorod synthesis [166]. (Copyright 2008, American Chemical Society)...

In this Letter, we describe the important initial results obtained by using the Husigen cycloadditon reaction in the case of gold nanorods and CdSe nanocrystals to produce covalently linked assemblies. Carbon nanotubes decorated by covalently linked gold nanoparticles have also been produced by this means. 

The excitation of the surface plasmon effect also induces strongly enhanced fluorescence properties of gold nanoparticles due to the enhanconent in the radiative rate of the inter-band electronic transitions relative to that in bulk metals. Metal nanoparticles, especially gold nanorods exhibit enhanced two-photon luminescence (TPL) and multi-photon luminescoice (MPL) [7, 8]. Strongly-enhanced TPL has been observed from individual particles [9, 10] and particle solutions [11] under femtosecond NIR laser excitation. This observation raises the possibility of nonlinear optical imaging in the NIR region, where water and biomolecules have... 

Fig. 11.5 Rationally fabricated SERS substrates. From (a) to (I), triangular nanoparticle array [30], silver nanowire bundles [32], Ag nanoparticle-assembled silica nanoparticle (SERS dots) [33], metal nanoparticle aggregates (COINs) [34], gold nanocrescent [49], gold nanoparticles with thin oxide shells [50], hollow-type gold nanoparticles [35-37], gold nanorods [38 10], nanocubes [41,42], flower-like gold nanoparticles [43], nanodisks [46], and gold nanorods immobilized on silica nanoparticles [48]...

Figure 1. Schemes of the seed-mediated growth method (A) for preparing Au nanorods, and (B) for modifying an ITO surface with gold nanoparticles.

Figure 2. SEM image of ITO surface modified with gold nanoparticles and nanorods.

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