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The Effect of Ammonia Ions on the Absorption and Fluorescence of an Oxazine Dye
- Source :
- Spectroscopy Letters. 16:555-563
- Publication Year :
- 1983
- Publisher :
- Informa UK Limited, 1983.
-
Abstract
- The addition of ammonium hydroxide to a weakly acidic oxazine perchlorate dye produces a color change by means of a deprotonation mechanism in which the hydroxyl radical abstracts a loosely bound proton, leaving the positively charged ammonium cation to counter balance the perchlorate anion. This reaction produces significant absorption and fluorescence band shifts which can be accounted for by a semi-classical oscillator model predicting two dichroic electronic band systems associated with this dye. Peculiar wavelength excitation dependent fluorescence band shifts are attributed to overlapping triplet states simultaneously excited.
- Subjects :
- Inorganic chemistry
Photochemistry
Fluorescence
Atomic and Molecular Physics, and Optics
Molecular electronic transition
Analytical Chemistry
Ion
chemistry.chemical_compound
Perchlorate
Ammonium hydroxide
Deprotonation
chemistry
Hydroxyl radical
Physics::Chemical Physics
Absorption (chemistry)
Spectroscopy
Subjects
Details
- ISSN :
- 15322289 and 00387010
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Spectroscopy Letters
- Accession number :
- edsair.doi...........861683c49927c4192c9ca6723a33de9e
- Full Text :
- https://doi.org/10.1080/00387018308062375