Nanopartide surface chemistry

Faulds, K., litdeford, R.E., Graham, D., Dent, G., and Smith, W.E. (2004) Comparison of surface-enhanced resonance Raman scattering from unaggrcgarcd and aggregated nanopartides. Analytical Chemistry, 76, 592-598. 

As the different preparation methods lead to magnetic nanopartides with differences in crystalline structure, surface chemistry, shape, and so on, the fabrication technique will have a major influence on the magnetic properties of the materials... 

In this chapter we focused on the characterization of core-shell magnetic nanopartides as determined by X-ray photoelectron spectroscopy (XPS). XPS, also known as Eledron Spectroscopy for Chemical Analysis (ESCA), is an elemental analysis technique and used to determine quantitatively the atomic composition and surface chemistry. XPS spedra are obtained by irradiating a material with a beam of X-rays while simultaneously measuring the kinetic energy and number of electrons that escape from the top 1 to 10 nm of the material being analysed (Watts et al., 2003 http //en. Wikipedia org/wiki/X-ray photoelectron spectroscopy). 

Until the end of the last century, bulk chromatographic materials containing porous or nonporous particles were used. Monolithic materials made of synthetic or natural pol)7mers and silica-based monoliths with similar surface chemistry have also been used as additional chromatographic supports in the last 15—20 years. Due to the rapid interaction between the sample components and the surface, monolithic materials enable very fast chromatographic separation of large molecules such as proteins and nucleic adds and nanopartides such as viruses and protein aggregates [5,6]. 

A fluorescence-based method for determining the surface coverage and hybridization efficiency of thiol-capped oligonucleotides bound to gold thin films and nanopartides. Analytical Chemistry, 72(22), 5535 1. 

FTIR study of the mode of binding of the reactants on the Pd nanopartide surface during the catalysis of the Suzuki reaction. Journal of Physical Chemistry B, 109, 4357. 

Miyazaki, A., Yoshida, S., Nakano, Y. and Balint, 1. (2005) Preparation of tetrahedral Pt nanopartides having 111 facet on their surface. Chemistry Letters, 34, 74. 

De, T.K. Maitra, A. Partide Engineering of Drug-Loaded Nanopartides and Their Potential Drug-Targeting Applications.in Handbook of Surface and Colloid Chemistry, Birdi, K.S. (Ed.), CRC Press Boca Raton, 1997, pp. 603-612. 

Chen, S.W. and Murray, R.W. (1999) Electrochemical quantized capacitance charging of surface ensembles of gold nanopartides. Journal of Physical Chemistry B, 103, 9996-10000. 

Haes, A.J.. Zou, S., Schatz, G.C., and Van Duyne, R.P. (2004) Nanoscale optical biosensor short range distance dependence of the localized surface plasmon resonance of noble metal nanopartides. Journal of Physical Chemistry E, 108, 6961-6968. 

A variety of synthetic methodologies for the preparation of metal nanopartides within a narrow size distribution are available, including impregnation,deposition/predpita-tion, sol-gel, sonochemical, microemulsion,laser ablation,and electrochemical. Often, the nanopartides are prepared by wet chemistry procediues, in which dusters of metal atoms are formed in the presence of a stabilizer, like polymers, dendrimers, microgds, surfac-... 

Orendorff, C.J., Gole, A., Sau, T.K. and Murphy, C.J. (2005) Surface-enhanced Raman spectroscopy of self-assembled monolayers sandwich architecture and nanopartide shape dependence. Analytical Chemistry, TJ, 3251-5. Rasdike, G., Brogl, S., Susha, A.S.. Rogadi, A.L., Mar, T.A., Feldmann, Fieres, B., Petkov, N., Bein, T., NichtI, A. and Kurzinger, K. (2004) Gold nanoshells improve single nanopartide molecular sensors. Nano Letters, 4. 1853-7. 

Inasawa, S., Sugiyama, M. and Yamaguchi, Y. (2005) Laser-induced shape transformation of gpld nanopartides below the melting point the effect of surface melting. The Journal of Physical Chemistry B, 109, 3104—11. 

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