PHYS01200704032 Debes Ray - Homi Bhabha National Institute

d/d (cm -1 )
Absorbance
Chapter 7: Interaction of Gold Nanoparticle with Proteins
small amount of block copolymer must be required to enhance the synthesis. In this synthesis,
the role of P85 where Na 3 Ct dominates the reduction is mostly in enhancing nucleation and
growth of the gold nanoparticles. The block copolymers are expected to exist on the surface
of the nanoparticles providing them stability.
12
10
8
6
4
2
1 wt% P85
0.1 wt% P85
0.01 wt% P85
0.001 wt% P85
0 wt% P85
0
400 500 600 700
Wavelength (nm)
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.
5 X wt% P85 + 0.2 wt% HAuCl4.3H2O + 0.2 wt% Na3Ct
1
1.0
0.1
0.01
0.001
0.1
0.01 0.1
Q (Å -1 )
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.
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