Production of gas-phase bare transition metal clusters by laser photodissociation of organometallic cluster compounds

1981 ◽  
Vol 103 (23) ◽  
pp. 7022-7023 ◽  
Author(s):  
V. Vaida ◽  
N. J. Cooper ◽  
R. J. Hemley ◽  
D. G. Leopold
Keyword(s):  
Transition Metal ◽  
Gas Phase ◽  
Metal Clusters ◽  
Cluster Compounds ◽  
Transition Metal Clusters

Excited State Absorption in Cubane-Like Transition Metal Clusters

1994 ◽  
Vol 374 ◽  
Author(s):  
W. Ji ◽  
H. J. Du ◽  
S. Shi
Keyword(s):  
Excited State ◽  
Transition Metal ◽  
Metal Clusters ◽  
Excited State Absorption ◽  
Laser Pulses ◽  
Cluster Compounds ◽  
Triplet States ◽  
Transition Metal Clusters ◽  
Time Resolved ◽  
Singlet States

AbstractWe report an investigation of excited-state absorption in cubane-like transition metal clusters. The fluence-dependent transmittances of the clusters have been measured with using 8-ns laser pulses. Time-resolved transmission measurements show that the triplet-triplet absorption occurs within a few nanoseconds. We have also developed a five-level (two singlet states, two triplet states, and one ionized state) model to simulate the excited-state absorption in these cluster compounds. The comparison between the model and the experimental measurements indicates that the population of the triplet states is created mainly by an ionization-recombination process and the triplet-triplet transitions are responsible for the observed nonlinear absorption.

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