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Laser Annealing of Semiconductor Clusters: Trimethylamine Reactions with Positive and Negative Clusters

Published online by Cambridge University Press:  28 February 2011

S. Maruyama ,
L. R. Anderson  and
R. E. Smalley
S. Maruyama
Affiliation:
RQI Visiting Fellow, Department of Mechanical Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan.
L. R. Anderson
Affiliation:
Rice Quantum Institute and Departments of Chemistry and Physics Rice University, Houston, Texas 77251
R. E. Smalley
Affiliation:
Rice Quantum Institute and Departments of Chemistry and Physics Rice University, Houston, Texas 77251
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Abstract

Reaction studies with trimethylamine on positively charged laser-annealed silicon clusters of 39, 43, and 48 atoms magnetically levitated in a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer reveal the same relative reaction pattern as previously observed for identical studies with ammonia and ethylene. The 39th cluster was found to be considerably less reactive than the other positive cluster sizes, and significantly, its negative ion is also relatively less reactive than the 43rd and 48th. The continued observation of this reactivity trend provides additional experimental evidence that the annealed clusters adopt well-organized structures, and that these crystal forms are similar for both charge states.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 206: Symposium G – Clusters and Cluster-Assembled Materials , 1990 , 63
Copyright
Copyright © Materials Research Society 1991

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References

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