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| VOLUME 95 (2012) | ISSUE 12 | PAGE 738 |
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Self-assembly of charged CdTe nanoparticles
D. N. Voylov+*, L. M. Nikolenko, D. Yu. Nikolenko°, N. A. Voylova, E. M. Olsen×, V. F. Razumov
+Joint Analytical Center, Scientific Center in Chernogolovka RAS, 142432 Chernogolovka, Russia *Laboratory of Physical and Chemical Investigations, Institute of Problems of Chemical Physics RAS, 142432 Chernogolovka, Russia °Laboratory of Photonics of Nanosized Structures, Institute of Problems of Chemical Physics RAS, 142432 Chernogolovka, Russia ×Department of Physics and Astronomy, University of Tennessee, Knoxville, 37996 Tennessee USA
Abstract
Here we show a method of the organization of charged CdTe nanoparticles which allows the generation of a self-assembled monolayer of above 10.000 μm2 in a time of about 90 s. The analysis of adsorption kinetics of particles on a surface shows that it is well described by the Langmuir isotherm. We have found that thermal and electrical conductivity of a substrate play an important role. Nevertheless, deficiency of a substrate doesn't affect the adsorption kinetic. The structure of a formed monolayer essentially depends on pH and as a consequence on the particles' charge. This method can be effective for the production of a CdTe nanoparticle's monolayer with well controlled area and a degree of filling on a surface. |