TRANSIENT EMITTING SPECIES IN PHOSPHORUS CHEMILUMINESCENCE
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Date
1975
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Publisher
Ohio State University
Abstract
Recently the emitting species in phosphorus chemiluminescence under ambient conditions have been identified as HPO, P0 $\gamma$-system and (PO)$_{2}^{*}$ $excimer.^{1}$ We have verified that the major visible emitting species is (PO)$_{2}^{*}$ excimer by observing the thermal dissociation of the excimer and the consequent appearance of the (0,0) transition of the PO $\beta$-system in the spectra. Further confirmation was given by diluting the system with a buffer gas affecting the equilibrium $(P0)_{2}^{*} \leftrightarrow PO(^{4}\Pi) + PO(X^{2}\Pi) \leftrightarrow PO(X^{2}\Pi) + PO(B^{2}\Sigma^{+}$) to enhance the PO $\beta$-system emission. Drying the reactants beforehand decreases the HPO emission without a major effect on the continuum emission, which eliminates the possibility that the continuum could arise from a species containing hydrogen.
Description
$^{1}$R. J. Van Zee and A. U. Khan, J. Amer. Chem. Soc. 96, 6805 (1974).""
Author Institution: Departments of Chemistry and Biophysics,, Michigan State University
Author Institution: Departments of Chemistry and Biophysics,, Michigan State University