Photophysical properties and photoreduction of N-acetyl- and N-benzoylphthalimides

L. Biczók, Helmut Görner

Research output: Contribution to journalArticle

Abstract

The photophysical properties and photoreduction of N-acetylphthalimide (AcP) and N-benzoylphthalimide (BzP), N-3,4,5-trimethoxybenzoylphthalimide (trimethoxyBzP) and N-4-nitrobenzoylphthalimide (nitroBzP) were studied by steady-state and transient techniques. Radicals and their precursor triplet states were detected by flash photolysis. The triplet state properties of AcP and BzP were characterized. In contrast, no triplet absorption was observed with ns-detection for trimethoxyBzP and nitroBzP. Specific products are formed upon electron transfer from triethylamine to the photoexcited acylphthalimides. In addition, H-atom transfer from 2-propanol or other alcohols to the triplet state takes place. The properties of several radical intermediates involved in photoreduction of the acylphthalimides as well as some structure-function relationships are described.

Original languageEnglish
Pages (from-to)10-15
Number of pages6
JournalChemical Physics
Volume392
Issue number1
DOIs
Publication statusPublished - Jan 2 2012

Fingerprint

2-Propanol
Photolysis
photochemical reactions
atomic energy levels
Alcohols
Atoms
Electrons
flash
photolysis
electron transfer
alcohols
products
atoms
triethylamine

Keywords

  • N-acylphthalimides
  • Photoreduction
  • Radical
  • Triplet state

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Photophysical properties and photoreduction of N-acetyl- and N-benzoylphthalimides. / Biczók, L.; Görner, Helmut.

In: Chemical Physics, Vol. 392, No. 1, 02.01.2012, p. 10-15.

Research output: Contribution to journalArticle

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