Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2002
Electronic Supplementary Information
[60]Fullerene-Linked Gold Nanoparticles: Synthesis and Layer-byLayer Growth on Solid Surface
Young-Seok Shon* and Hosun Choo
Department of Chemistry, Western Kentucky University, Bowling Green, KY 42101, USA.
1.4
1.2
Absorbance
1.0
(a)
0.8
0.6
(b)
0.4
0.2
(c)
0.0
-0.2
300
400
500
600
700
800
900
Wavelength (nm)
Fig. A UV-vis absorption apectra of (a) C60-linked gold nanoparticles, (b) 4aminothiophenoxide/hexanethiolate-protected gold nanoparticles and (c) C60 in CH2Cl2.
10 nm
10 nm
(a)
(b)
Fig. B TEM images of (a) 4-aminothiophenoxide/hexanethiolate-protected gold nanoparticles and (b) C60induced small aggregates of C60-linked gold nanoparticles.
1
Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2002
0.14
(a)
0.12
Absorbance
0.10
0.08
0.06
0.04
0.02
0.00
-0.02
300
400
500
600
700
800
900
Wavelength (nm)
0.4
(b)
Absorbance
0.3
0.2
0.1
0.0
300
400
500
600
700
800
900
Wavelength (nm)
Fig. C UV-vis absorption spectra of the layer-by-layer assemblies (up to five layers) of (a) method 1 and
(b) method 2: the dotted lines represent UV-vis spectra obtained after immersion in toluene solution
containing C60 and the solid lines represent UV-vis spectra obtained after immersion in toluene solution
containing 4-aminothiophenoxide/hexanethiolate-protected gold nanoparticles.
2
Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2002
Absorbance at 520 nm
0.18
0.16
0.14
0.12
Method 2
0.10
0.08
0.06
0.04
Method 1
0.02
0.00
0
1
2
3
4
5
6
Number of Layer
Fig. D The linear regression plots of UV absorbance at 520 nm for both method 1 and method 2.
0.14
0.12
Absorbance
0.10
0.08
0.06
0.04
0.02
0.00
-0.02
300
400
500
600
700
800
900
Wavelength (nm)
Fig. E UV-vis absorption spectra of the layer-by-layer assemblies of 4aminothiophenoxide/hexanethiolate-protected gold nanoparticles and poly(styrene sulfonic acid).
3