Shape-Defined Nanodimers by Tailored Heterometallic Epitaxy Carlos A. García-Negrete a, *, Teresa C. Rojas a , Benjamin R. Knappett b , David A. Jefferson b , Andrew E. H. Wheatley b , Asunción Fernández a a Instituto de Ciencia de Materiales de Sevilla (CSIC e Univ. Sevilla), Avda. Américo Vespucio nr. 49, CIC Cartuja, 41092 Sevilla, Spain b Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK * Email: [email protected] or [email protected] Supplementary information Figure S1. Representative TEM image of HDs obtained at room temperature for 120h. Electronic Supplementary Material (ESI) for Nanoscale. This journal is © The Royal Society of Chemistry 2014
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Shape-Defined Nanodimers by Tailored Heterometallic
Epitaxy
Carlos A. García-Negretea,*, Teresa C. Rojasa, Benjamin R. Knappettb, David A.
Jeffersonb, Andrew E. H. Wheatleyb, Asunción Fernándeza
aInstituto de Ciencia de Materiales de Sevilla (CSIC e Univ. Sevilla), Avda. Américo
Vespucio nr. 49, CIC Cartuja, 41092 Sevilla, Spain
bDepartment of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2
1EW, UK
* Email: [email protected] or [email protected]
Supplementary information
Figure S1. Representative TEM image of HDs obtained at room temperature for 120h.
Electronic Supplementary Material (ESI) for Nanoscale.This journal is © The Royal Society of Chemistry 2014
Figure S2. Representative TEM image of cubeoctahedrally-derived HDs obtained
through reaction at 60 ºC for 5h
Figure S3. Representative TEM image of the sample composed of octahedrally-derived
HDs as well as the two different products highlighted in the image.
HDs comprising two Au domains linked by one octahedral Pt domain
Icosahedrally-derived HDs
Figure S4. Representative HRTEM image of icosahedrally-derived HDs
Size measurements
The sizes of Pt seeds and HDs were analysed using Gatan Digital Micrograph software by examining at least 100 particles from several TEM images. HD sizes were measured separately for each domain type in order to notice possible size changes with respect to the initial Pt seed. Data was then used to construct particle size distributions with OriginPro 8.0.
Table S1. Average domain sizes in different Au-Pt HDs and Pt seeds
Pt domain Au domainSample Size (nm) Standard
deviationSize (nm) Standard
deviationCubeoctahedra seed 4.40 0.60Octahedra seed 11.2 1.0Octapods seed 12.5 1.0Cubectahedrally- derived HDs 4.67 0.74 8.39 1.4Octahedrally- derived HDs 12.5 2.0 16.0 2.4Octapodally-derived HDs 12.3 1.6 14.1 3.2
Size distributions
3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,505
1015202530354045
Coun
ts
Size (nm)
Cubeoctahedra seed
8 9 10 11 12 130
5
10
15
20
25
Coun
ts
Size (nm)
Octahedra seed
10 11 12 13 140
5
10
15
20
Coun
ts
Size (nm)
Octapods Seed
3 4 5 6 70
5
10
15
20
25
30
Coun
ts
Size (nm)
Cubectahedrally- derived HDs_Pt domain
4 6 8 10 120
5
10
15
20
25
30
35
40
Coun
ts
Size (nm)
Cubectahedrally- derived HDs_Au domain
8 10 12 14 160
5
10
15
20
25
30
Coun
ts
Size (nm)
Octahedrally- derived HDs_Pt domain
10 12 14 16 18 200
5
10
15
20
25
30
Coun
ts
Size (nm)
Octahedrally- derived HDs_Au domain
8 10 12 14 160
5
10
15
20
25
Coun
ts
Size (nm)
Octapodally-derived HDs_Pt domain
8 10 12 14 16 18 20 22 24 26 280
5
10
15
20
25
30
Coun
ts
Size (nm)
Octapodally-derived HDs_Au domain
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