Antonietti M. 's Colloid Chemistry II PDF

By Antonietti M.

ISBN-10: 3540004181

ISBN-13: 9783540004189

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A fact that higher dendrimer concentrations are required for obtaining stable platinum particles compared to that for gold particles suggest that the interaction between platinum particles and the dendrimers is weaker than that between gold particles and the dendrimers. In fact, FT-IR spectra of the dendrimer-platinum nanoparticles show that the absorption band due to the in- 40 K. Esumi a b Fig. 5a,b. TEM images and size distribution of gold nanoparticles, molar ratio of surface amino group of G5 and HAuCl4: a 1:1; b 4:1.

5. 2 mmol dm–3, [PAMAM]=10 mmol dm–3, [dimethylamine borane]=2 mmol dm–3. Reprinted with permission from [28]. Copyright 2002 Academic Press a 46 K. 5 dendrimers adsorb on the surface of gold nanoparticle. When HAuCl4 in formamide solutions in the presence of PAMAM dendrimers with surface methyl ester groups is reduced by addition of sodium borohydride, gold nanoparticles are also obtained whose size decreases with an increase of the dendrimer concentration as well as the generation [29]. Further, the particle size of gold is affected by the elapsed time for the solution before reduction since HAuCl4 in formamide is reduced to some extent.

These results suggest that nanoparticles can provide a new class of lu- Dendrimers for Nanoparticle Synthesis and Dispersion Stabilization 51 Fig. 15. Schematic representation of the model nanomolecular composite structure from SANS and SAXS measurements. Left, individual dendrimer molecule with CuS trapped at its periphery. Right, multimolecular cluster of individual dendrimer/CuS particles. Reprinted with permission from [49]. Copyright 2002 Elsevier Science minophores for use in chemical sensing, DNA sequencing, high throughput screening, and other biotechnology applications.

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Colloid Chemistry II by Antonietti M.


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