Gold nanoparticles characterization

Plieth W, Dietz H, Anders A, Sandmann G, Meixner A, Weber M, Kneppe H (2005) Electrochemical preparation of silver and gold nanoparticles characterization by confocal and surface enhanced Raman microscopy. Surf Sci 597 119... 

Bates et al. reported the construction and characterization of a gold nanoparticle wire assembled using Mg -dependent RNA-RNA interactions for the future assembly of practical nanocircuits [31]. They used magnesium ion-mediated RNA-RNA loop-receptor interactions, in conjunction with 15 nm or 30 nm gold nanoclusters derivatized with DNA to prepare self-assembled nanowires. A wire was deposited between lithographically fabricated nanoelectrodes and exhibited non-linear activated conduction by electron hopping at 150-300 K (Figure 16). 

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. 

Hernandez J, Solla-Gullon J, Herrero E. 2004. Gold nanoparticles synthesized in a water-in-oil microemulsion Electrochemical characterization and effect of the surface structure on the oxygen reduction reaction. J Electroanal Chem 574 185-196. 

Aryal, S., Bahadour, K.C.R., Bhattarai, J.R., Prabu, P. and Kim, H.Y. (2006) Immobilization of collagen on gold nanoparticles, preparation, characterization and hydroxyapatite growth, foumal of Materials Chemistry, 16, 4642-4648. 

S.Schimpf, M. Lucas, C. Mohr, U.Rodemerck, A. Bruckner, J.Radnik, H. Hofmeister, andR Claus, Supported gold nanoparticles in-depth catalyst characterization and application in hydrogenation and oxidation reactions, Catal. Today 72(1—2), 63—78 (2002). 

We describe how we prepared and characterized gold nanoparticles ( 3 nm in diameter) capped with thiolated cyclodextrins. The CD-capped nanoparticles are hydrophilic, and they bind compounds derivitized from ferrocene as evidenced by values measured by NMR spectroscopy. (Adapted from Liu et al., 2001)... 

The preparation and characterization of gold nanoparticles ( 3 nm in diameter) capped with thiolated cyclodextrins are described. The CD-capped... 

Zanella R, Giogio S, Shin CH, Henry CR Louis C (2004) Characterization and reactivity in CO oxidation of gold nanoparticles supported on Xi02 prepared by deposition-preparation with NaOH and Urea. J Catal 222 257-267... 

Many reports are available where the cationic surfactant CTAB has been used to prepare gold nanoparticles [127-129]. Giustini et al. [130] have characterized the quaternary w/o micro emulsion of CTAB/n-pentanol/ n-hexane/water. Some salient features of CTAB/co-surfactant/alkane/water system are (1) formation of nearly spherical droplets in the L2 region (a liquid isotropic phase formed by disconnected aqueous domains dispersed in a continuous organic bulk) stabilized by a surfactant/co-surfactant interfacial film. (2) With an increase in water content, L2 is followed up to the water solubilization failure, without any transition to bicontinuous structure, and (3) at low Wo, the droplet radius is smaller than R° (spontaneous radius of curvature of the interfacial film) but when the droplet radius tends to become larger than R° (i.e., increasing Wo), the microemulsion phase separates into a Winsor II system. 

Manna A, Imae T, Yogo T, Aoi K, Okazaki M (2002) Synthesis of gold nanoparticles in a Winsor II type microemulsion and their characterization. J Colloid Interface Sci 256 297-303... 

Azene H, Sigers S, Johnson V (2003) Formation and characterization of gold nanoparticles in dioctyl sulfosuccinate/isooctane and dioctyl sulfosuccinate/phosph-atidyulcholine/isooctane mixed reverse micelles. Abstr Pap Am Chem Soc 225 U23-U23... 

Evans SD, Johnson SR, Mahon SW, Ulman A (1997) Synthesis and Characterization of Surfactant-Stabilized Gold Nanoparticles. Supramol Sci 4 329-333... 

Chemically prepared colloidal gold nanoparticles were immobilized as a submonolayer on Au(lll) surface modified with self-assembled monolayers (SAMs) of 4-aminothiophenol [14]. This submonolayer of Au nanoparticles was subsequently characterized using STM. 

Dos Santos, D. S., Alvarez-Puebla, R. A., Oliveira, O. N., and Aroca, R. F. (2005). Controlling the size and shape of gold nanoparticles in fulvic acid colloidal solutions and their optical characterization using SERS. J. Mater. Chem. 15(29), 3045-3049. 

Hornyak, G. L., Patrissi, C. J., and Martin, C. R., Fabrication, characterization, and optical properties of gold nanoparticle/porous alumina composites the nonscattering Maxwell-Garnett. J. Phys Chem. 101,1548 (1997). 

Merroun, M., et al. (2007), Spectroscopic characterization of gold nanoparticles formed by cells and S-layer protein of Bacillus sphaericus JG-A12, Mater. Sci. Eng., 27(1), 188-192. 

A new spectroscopic method for the characterization of surface vacancy clusters is a combination of positron lifetime spectroscopy, which determines the size of vacancy clusters, and coincidence Doppler broadening of annihilation radiation, which gives information on where vacancy clusters are located [5, 6]. If these clusters are located on the surface of gold nanoparticles, namely the interface between the particle and host matrix, the surroundings of the clusters should include both particle atoms and the matrix atoms. Doppler broadening of annihilation radiation (DBAR) with two-detector coincidence should be able to reveal these atomic constituents, and therefore elucidate the location of vacancy clusters. 

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