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Picosecond relaxation dynamics in polydiacetylene-pTS

✍ Scribed by B.I. Greene; J. Orenstein; R.R. Millard; L.R. Williams

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
522 KB
Volume
139
Category
Article
ISSN
0009-2614

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✦ Synopsis

Time-resolved absorption spectroscopy as well as transient grating measurements were performed on poiydiacetylene-pTS.

Singlet exciton lifetimes of 0.8 f 0.2 ps at 300 K and 1.1 + 0.2 ps at 5 K were measured. We propose that the observed non-radiative relaxation proceeds through a conformationally relaxed singlet state which lives for roughly 1 .O and 3.4 ps at 300 and 5 K, respectively. Data pertinent to the formation of triplet excitons are also presented and discussed.

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