Nonetheless, several interesting applications of the rich photophysical behavior of these complexes have been found, for example, the determination of volatile organic compounds (VOC) in air, exploiting the reversible change in the emission spectra
Figure 4. Comparison of the luminescence thermochromism of clusters 2a−2e.
Figure 5. Normalized emission spectrum of compound 2a at 25 °C (orange line) and at −196 °C (blue line). Data taken from ref 7.
Figure 6. Simplified potential energy surface for cluster 2a.
Journal of Chemical Education Laboratory Experiment
dx.doi.org/10.1021/ed200736b| J. Chem. Educ. 2012, 89, 946−949948
resulting from exposing these clusters to organic solvent vapors.8,14