PHYS01200704032 Debes Ray - Homi Bhabha National Institute

Figure 6.10. Schematic of structure of block copolymer-stabilized gold nanoparticles. The
samples in cells show that the concentration of gold nanoparticles in presence of additional
reductant can be enhanced.
Figure 6.11. SANS data of 1 wt% P85 with varying (HAuCl 4 .3H 2 O + Na 3 Ct) concentration
in D 2 O at 15 o C.
Figure 6.12. SANS data of 1 wt% P85 with varying (HAuCl 4 .3H 2 O + Na 3 Ct) concentration
at 15 o C. The block copolymers are contrast-matched to the solvent (15% D 2 O). The solid
curves are theoretical fits to the experimental data.
Figure 6.13. The calculated size distributions of gold nanoparticles in 1wt% P85 at varying
gold nanoparticle concentration.
Figure 6.14. SAXS data of 1 wt% P85 with varying (HAuCl 4 .3H 2 O + Na 3 Ct) concentration.
The solid curves are theoretical fits to the experimental data.
Figure 6.15. TEM micrographs and the calculated size distribution histograms of gold
nanoparticles in 1 wt% P85 with varying (HAuCl 4 .3H 2 O + Na 3 Ct) concentration.
Figure 6.16. DLS data of 1 wt% P85 with varying (HAuCl 4 .3H 2 O + Na 3 Ct) concentration.
The solid curves are the theoretical fits to the experimental data.
Figure 6.17. Time-dependent UV-visible absorption spectra of 1 wt% P85 with 0.05 wt%
HAuCl 4 .3H 2 O + 0.05 wt% Na 3 Ct. The different data sets from bottom to top correspond to
increase in absorbance with time. Inset gives the variation of the integrated absorbance of
SPR peak as a function of time.
Figure 6.18. The time-dependent variation of the integrated absorbance (400–800 nm) of
SPR peak in 1wt% P85 at different nanoparticle concentrations.
Figure 7.1. Photograph of stable gold nanoparticles at different P85 concentration for 0.2
wt% gold salt and in presence of 0.2 wt% Na 3 Ct.
Figure 7.2. SPR peak in UV-visible absorption spectra of varying P85 concentration for 0.2
wt% HAuCl 4 .3H 2 O with 0.2 wt% Na 3 Ct.
Figure 7.3. SANS data of varying P85 concentration for 0.2 wt% HAuCl 4 .3H 2 O with 0.2
wt% Na 3 Ct in D 2 O at 15 o C. The solid curves are the theoretical fits to the experimental data.
Figure 7.4. TEM micrographs of gold nanoparticles for 0.2 wt% HAuCl 4 .3H 2 O with 0.2 wt%
Na 3 Ct as prepared with varying P85 concentration (a) 0.001, (b) 0.01, (c) 0.1 and (d) 1 wt%.
xxviii