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Dieses Fachbuch eines Pioniers in diesem schnell wachsenden
Fachbereich fasst die jungsten Erkenntnisse zur Optimierung von
OLEDs zusammen. Die Theorie wird ausfuhrlich beschrieben, ebenso
verschiedene organische und anorganische emittierende Materialien,
Display- und Lichtanwendungen.
There exists a large literature on the spectroscopic properties of
copper(II) com- 9 pounds. This is due to the simplicity of the d
electron configuration, the wide variety of stereochemistries that
copper(II) compounds can adopt, and the f- xional geometric
behavior that they sometimes exhibit [1]. The electronic and
geometric properties of a molecule are inexorably linked and this
is especially true with six-coordinate copper(II) compounds which
are subject to a Jahn-T- ler effect.However,the spectral-structural
correlations that are sometimes d- wn must often be viewed with
caution as the information contained in a typical solution UV-Vis
absorption spectrum of a copper(II) compound is limited. Meaningful
spectral-structural correlations can be obtained in a related
series of compounds where detailed spectroscopic data is available.
In the fol- 4- lowing sections two such series are examined; the
six-coordinate CuF and 6 2+ Cu(H O) ions doped as impurities in
single crystal hosts.Using low tempera- 2 6 ture polarized optical
spectroscopy and electron paramagnetic resonance, a very detailed
picture can be drawn about the geometry of these ions in both their
ground and excited electronic states. We then compare the
spectrosco- cally determined structural data with that obtained
from X-ray diffraction or EXAFS measurements.
The unique properties and applications of transition metal
compounds have long fascinated both physicists and chemists. This
volume presents theoretical and experimental studies for a deeper
understanding of the electronic and vibronic properties of these
compounds. In particular, an introduction into properties of spin
sublevels of dd*, dA*, and AA* states is given, and a modern ligand
field theory based on the Angular Overlap Model is presented. In
experimental case studies it is shown how to characterize different
types of electronic transitions using modern methods of laser
spectroscopy. Consequences of spin-orbit coupling, zero-field
splittings, spin-lattice relaxations, chromophore-matrix
interactions, Herzberg-Teller/Franck-Condon activities, and
localization/delocalization properties are treated.
There exists a large literature on the spectroscopic properties of
copper(II) com- 9 pounds. This is due to the simplicity of the d
electron configuration, the wide variety of stereochemistries that
copper(II) compounds can adopt, and the f- xional geometric
behavior that they sometimes exhibit [1]. The electronic and
geometric properties of a molecule are inexorably linked and this
is especially true with six-coordinate copper(II) compounds which
are subject to a Jahn-T- ler effect.However,the spectral-structural
correlations that are sometimes d- wn must often be viewed with
caution as the information contained in a typical solution UV-Vis
absorption spectrum of a copper(II) compound is limited. Meaningful
spectral-structural correlations can be obtained in a related
series of compounds where detailed spectroscopic data is available.
In the fol- 4- lowing sections two such series are examined; the
six-coordinate CuF and 6 2+ Cu(H O) ions doped as impurities in
single crystal hosts.Using low tempera- 2 6 ture polarized optical
spectroscopy and electron paramagnetic resonance, a very detailed
picture can be drawn about the geometry of these ions in both their
ground and excited electronic states. We then compare the
spectrosco- cally determined structural data with that obtained
from X-ray diffraction or EXAFS measurements.
The unique properties and applications of transition metal
compounds have long fascinated both physicists and chemists. This
volume presents theoretical and experimental studies for a deeper
understanding of the electronic and vibronic properties of these
compounds. In particular, an introduction into properties of spin
sublevels of dd*, dA*, and AA* states is given, and a modern ligand
field theory based on the Angular Overlap Model is presented. In
experimental case studies it is shown how to characterize different
types of electronic transitions using modern methods of laser
spectroscopy. Consequences of spin-orbit coupling, zero-field
splittings, spin-lattice relaxations, chromophore-matrix
interactions, Herzberg-Teller/Franck-Condon activities, and
localization/delocalization properties are treated.
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