Abstract
A simple approach to the creation of colloidal assemblies is in high demand for the development of functional devices. Here, we present the preparation of CdTe-QD (quantum dot) networks in as little as 1 day simply by pH modification without the use of oxidants. The QD network was tractable in water and casting from a droplet produced a porous networked film on both hydrophobic and hydrophilic solid substrates. Further, we found that citrate-protected gold nanoparticles (AuNPs, d = 5 nm) could be incorporated into the QD networks to afford a QD/Au composite network, and that the fluorescence from the QDs was largely decreased by the addition of a small proportion of AuNPs (QD:AuNP = 99.4:0.6), probably due to the efficient charge transfer through the network. These data indicate that our method is suitable for application to the creation of metal/QD hybrid materials that can be integrated into wet-based processes.
Original language | English |
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Pages (from-to) | 4169-4173 |
Number of pages | 5 |
Journal | ACS Applied Materials and Interfaces |
Volume | 3 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2011 Nov 23 |
Externally published | Yes |
Keywords
- CdTe
- fluorescence quenching
- gold nanoparticle
- nanoparticle assembly
- quantum dot
- self-assembly
ASJC Scopus subject areas
- Materials Science(all)