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Studies on the photochromic mechanism of 1,2-dimethyl-5-phenyl-3-pyrryl succinic anhydride

  • L. Yu
  • Y. Ming
  • M. Fan
Article

Abstract

Photochromism of 1,2-dimethyl-5-phenyl-3-pyrryl fulgide (compound I) has been investigated in various solvents. The photocyclization process of I has been examined by means of nanosecond time resolved absorption spectroscopy; a new transient species was found on the nanosecond time scale. Oxygen can severely quench the new transient species. The photocyclization process is shown to be complicated. Both the excited singlet state and the excited triplet state are involved in the photochromic process.

Keywords

Excited Singlet State Succinic Anhydride Excited Triplet State Transient Species Isopropylidene 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 1993

Authors and Affiliations

  • L. Yu
    • 1
  • Y. Ming
    • 1
  • M. Fan
    • 1
  1. 1.Institute of Photographic ChemistryAcademia SinicaBeijingChina

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