On the Apparent Lack of Oxygen Quenching of Triplet Excited States |
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| Authors: | Emil H White David F Roswell† |
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| Institution: | Department of Chemistry, The Johns Hopkins University, Baltimore, MD, USA;Loyola College, Baltimore, MD, USA |
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| Abstract: | The early observation that excited triplet states obtained chemically from trimethyldioxetane (and subsequent energy transfers) appeared not to be quenched by oxygen is now shown to be an artifact; acetaldehyde is a product of the reaction and via chemical reactions it scavenges oxygen present in the medium; the attendant extended lifetime of the triplet states then permits their employment in photochemical-type reactions. The effect of the aldehyde can be over-ridden through an efficient introduction of an excess of oxygen into the liquid reaction phase. |
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