Time-resolved EPR spectra of the triplet excited states of diaminoacridine guests in polar potassium hydrogen phthalate single crystals

Marco Bellinazzi, Antonio Barbon, Bart Kahr, Jason B. Benedict, Marina Brustolon

Research output: Contribution to journalArticle

Abstract

Mixed crystals of potassium hydrogen phthalate containing 3,6-diaminoacridine were photoexcited with visible light and the resulting triplet excited states were analyzed by time resolved EPR spectroscopy. Spectra from discrete growth sectors were compared with powders and polycrystalline glasses prepared at various pHs. The data yield the predominant protonation state and orientation of the triplets in each of a pair of growth sectors bounding the positive and negative ends of the polar crystal.

Original languageEnglish (US)
Pages (from-to)379-385
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume8
Issue number3
DOIs
StatePublished - 2006

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phthalates
Excited states
Paramagnetic resonance
potassium
sectors
Proflavine
Single crystals
Crystals
Protonation
single crystals
mixed crystals
hydrogen
Powders
excitation
Spectroscopy
Glass
glass
spectroscopy
crystals
phthalic acid

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

Time-resolved EPR spectra of the triplet excited states of diaminoacridine guests in polar potassium hydrogen phthalate single crystals. / Bellinazzi, Marco; Barbon, Antonio; Kahr, Bart; Benedict, Jason B.; Brustolon, Marina.

In: Physical Chemistry Chemical Physics, Vol. 8, No. 3, 2006, p. 379-385.

Research output: Contribution to journalArticle

Bellinazzi, Marco ; Barbon, Antonio ; Kahr, Bart ; Benedict, Jason B. ; Brustolon, Marina. / Time-resolved EPR spectra of the triplet excited states of diaminoacridine guests in polar potassium hydrogen phthalate single crystals. In: Physical Chemistry Chemical Physics. 2006 ; Vol. 8, No. 3. pp. 379-385.
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