Breaking and restoring a molecularly bridged metal|quantum dot junction
- 25 November 2002
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (22) , 4245-4247
- https://doi.org/10.1063/1.1525396
Abstract
Nanometer-sized insulating quantum dots (CdSe and ZnO) have been attached to a Au(111) substrate, using molecular bridges with thiol and carboxylate end functions. We demonstrate that the quantum dots can be probed by a scanning tunneling microscope at negative substrate bias. At positive bias, however, the gold–sulfur bond is broken and the quantum dots are transferred to the tip. Individual CdSe quantum dots can be picked up by the tip and displaced on the substrate in a controlled way.Keywords
This publication has 11 references indexed in Scilit:
- Shell-Tunneling Spectroscopy of the Single-Particle Energy Levels of Insulating Quantum DotsNano Letters, 2001
- Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine−Trioctylphosphine Oxide−Trioctylphospine MixtureNano Letters, 2001
- Identification of atomic-like electronic states in indium arsenide nanocrystal quantum dotsNature, 1999
- Superlattices of Metal and Metal−Semiconductor Quantum Dots Obtained by Layer-by-Layer Deposition of Nanoparticle ArraysThe Journal of Physical Chemistry B, 1999
- Synthesis and Growth of ZnO NanoparticlesThe Journal of Physical Chemistry B, 1998
- A single-electron transistor made from a cadmium selenide nanocrystalNature, 1997
- Self-Assembly of a Two-Dimensional Superlattice of Molecularly Linked Metal ClustersScience, 1996
- Breaking individual chemical bonds via STM-induced excitationsSurface Science, 1996
- The Colloid Chemical Approach to Nanostructured Materials**Advanced Materials, 1995
- Theory of vibrational mode intensities in inelastic electron tunneling spectroscopyPhysical Review B, 1976