Journal
ACS NANO
Volume 7, Issue 3, Pages 2559-2565Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn305868n
Keywords
CdSe nanocrystals; graphitic surface; graphene; atomic ligands; chlorine; interaction
Categories
Funding
- European Commission [239256]
- Spanish Ministry of Science and Innovation [RYC-2007-01709, MAT-2009-13488]
- Deutsche Forschungsgemeinschaft (DFG)
- Ministerio de Ciencia e Innovacion [FIS2010-18847, FIS2012-33011, CSD2007-00010]
- Comunidad de Madrid [S2009/MAT-1726]
- EU (SMALL) [PITN-GA-2009-23884]
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The performance of devices based on semiconductor nanocrystals (NCs) improves both with stronger interface interactions among NCs and between NCs and solid electrode surfaces. The combination of X-ray photoelectron spectroscopy (XPS) and solid P-31 CP/MAS NMR (cross-polarization/magic angle spinning nuclear magnetic resonance) shows that the selective substitution of long organic chains by chlorine atomic ligands during the colloidal synthesis by the hot injection method promotes the adsorption of CdSe NCs to carbon sp(2) surfaces, leading to the formation of well-ordered NC monolayers on graphitic materials.
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