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Triplet Lifetime Determination of Molecules in the Gas Phase by T-T Energy Transfer

✍ Scribed by Ueli Brühlmann; J. Robert Huber

Publisher
John Wiley and Sons
Year
1981
Tongue
German
Weight
353 KB
Volume
64
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

It has been demonstrated that the triplet lifetime of nonemitting molecules in the dilute vapor phase ‐ even for complex triplet decays ‐ can be accurately determined by means of time‐resolved triplet‐triplet (T‐T) energy transfer to a strong emitter molecule. Besides the test molecules 1‐butyne‐3‐one and benzaldehyde the lifetime of the vibrationally relaxed nonemitting T~1~(nπ*) state of cycloheptanone, τ=63 ± 5 µs at ∼︁0.5 Torr, together with its energy transfer rate constant to biacetyl, k~ET~=(1.80±0.08) x 10^6^ s^−1^ Torr^−1^, have been measured.

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