Synthesis and Agglomeration of Silver Nanoparticles Stabilized with 5-R-Tetrazoles

Abstract In this work we present a simple method to obtain silver sols stabilized by tetrazole derivatives. The well established metal precursor silver nitrate and the reductant sodium borohydride have been combined with 5-R-tetrazoles (R=CH3, NH2) acting as stabilizing ligands. Depending on the utilized tetrazole, different agglomeration kinetics could be observed. Long term stability and agglomeration processes have been in situ investigated by the use of UV/Vis- and Raman-spectroscopy.

[1]  Chad A. Mirkin,et al.  Gold nanoparticles for biology and medicine. , 2010, Angewandte Chemie.

[2]  Andrey L Rogach,et al.  Properties and Applications of Colloidal Nonspherical Noble Metal Nanoparticles , 2010, Advanced materials.

[3]  Hongyu Chen,et al.  Measuring ensemble-averaged surface-enhanced Raman scattering in the hotspots of colloidal nanoparticle dimers and trimers. , 2010, Journal of the American Chemical Society.

[4]  P. Simon,et al.  Hydrogels and aerogels from noble metal nanoparticles. , 2009, Angewandte Chemie.

[5]  O. Ivashkevich,et al.  1-Substituted 5-thiotetrazoles as novel capping agents for stabilization of gold nanoparticles , 2009 .

[6]  C. Klinke,et al.  CdS nanoparticles capped with 1-substituted 5-thiotetrazoles: Synthesis, characterization, and thermolysis of the surfactant , 2008, 1304.7228.

[7]  Luis M Liz-Marzán,et al.  Tailoring surface plasmons through the morphology and assembly of metal nanoparticles. , 2006, Langmuir : the ACS journal of surfaces and colloids.

[8]  T. Mukherjee,et al.  Studies on adsorption of 5-amino tetrazole on silver nanoparticles by SERS and DFT calculations. , 2005, The journal of physical chemistry. A.

[9]  M. El-Sayed,et al.  Catalysis with transition metal nanoparticles in colloidal solution: nanoparticle shape dependence and stability. , 2005, The journal of physical chemistry. B.

[10]  Louis E. Brus,et al.  Single Molecule Raman Spectroscopy at the Junctions of Large Ag Nanocrystals , 2003 .

[11]  R. J. Herr,et al.  5-Substituted-1H-tetrazoles as carboxylic acid isosteres: medicinal chemistry and synthetic methods. , 2002, Bioorganic & medicinal chemistry.

[12]  D. Meisel,et al.  Adsorption and surface-enhanced Raman of dyes on silver and gold sols , 1982 .

[13]  P. K. Aravind,et al.  The interaction between electromagnetic resonances and its role in spectroscopic studies of molecules adsorbed on colloidal particles or metal spheres , 1981 .

[14]  D. L. Jeanmaire,et al.  Surface raman spectroelectrochemistry: Part I. Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode , 1977 .

[15]  M. Fleischmann,et al.  Raman spectra of pyridine adsorbed at a silver electrode , 1974 .