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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 41,
  • Issue 8,
  • pp. 1318-1324
  • (1987)

Excited-State Triplet-Triplet Absorption in αNPO

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Abstract

Time-resolved excited-state triplet-triplet absorption measurements in αNPO solutions were performed. A concentration quenching effect on the excited absorption and fluorescence spectra, due to excimer formation, was seen. A numerical analysis of the results yielded the rate constants for intersystem crossing, triplet quenching by O<sub>2</sub>, triplet self-quenching, and excimer formation.

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