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Aufsatz / Paper in SCI-Expanded-Zeitschrift

Luminescence and Spectroscopic Studies of Organometallic Rhodium and Rhenium Multichromophore Systems Carrying Polypyridyl Acceptor Sites and Phenylethinyl Antena Subunits

Oppelt K., Egbe D., Monkowius U., List M., Zabel M., Sariciftci S., Knör G.: Luminescence and Spectroscopic Studies of Organometallic Rhodium and Rhenium Multichromophore Systems Carrying Polypyridyl Acceptor Sites and Phenylethinyl Antena Subunits, in: J. Organomet. Chem., Volume 696, Page(s) 2252, 2011.

BibTeX

@ARTICLE{
title = {Luminescence and Spectroscopic Studies of Organometallic Rhodium and Rhenium Multichromophore Systems Carrying Polypyridyl Acceptor Sites and Phenylethinyl Antena Subunits},
type = {Aufsatz / Paper in SCI-Expanded-Zeitschrift},
author = {Oppelt, Kerstin and Egbe, Daniel Ayuk Mbi and Monkowius, Uwe and List, Manuela and Zabel, Manfred and Sariciftci, Serdar Niyazi and Knör, Günther},
language = {EN},
abstract = {The synthesis, structure, photophysics, and spectroscopic characterization of two novel organometallic rhodium and rhenium multichromophore photosensitizers carrying a central 2,2´- bipyridyl acceptor moiety is reported. Due to the presence of rigid phenylethynyl substituents in their 5,5´-position acting as intramolecular antenna groups, these compounds display perturbed excited state properties and a modified luminescence behaviour compared to the unsubstituted parent systems. The rhodium derivative is characterized by a weak blue-green intraligand (IL) phosphorescence occurring only at low temperatures. In the rhenium complex both a blue-green ligand-based luminescence and a red phosphorescence of metal-to-ligand charge transfer (MLCT) origin is observed at room temperature in solution. In rigid 77 K matrix the lowest-lying excited state levels approximate in energy and a structured luminescence band occurs which is ascribed to a ligand phosphorescence with admixed MLCT character.},
pages = {2252},
journal = {J. Organomet. Chem.},
volume = {696},
year = {2011},
}

Details

Zusammenfassung: The synthesis, structure, photophysics, and spectroscopic characterization of two novel organometallic rhodium and rhenium multichromophore photosensitizers carrying a central 2,2´- bipyridyl acceptor moiety is reported. Due to the presence of rigid phenylethynyl substituents in their 5,5´-position acting as intramolecular antenna groups, these compounds display perturbed excited state properties and a modified luminescence behaviour compared to the unsubstituted parent systems. The rhodium derivative is characterized by a weak blue-green intraligand (IL) phosphorescence occurring only at low temperatures. In the rhenium complex both a blue-green ligand-based luminescence and a red phosphorescence of metal-to-ligand charge transfer (MLCT) origin is observed at room temperature in solution. In rigid 77 K matrix the lowest-lying excited state levels approximate in energy and a structured luminescence band occurs which is ascribed to a ligand phosphorescence with admixed MLCT character.

Journal: J. Organomet. Chem.
Volume: 696
Erscheinungsjahr: 2011
Seitenreferenz: 2252
Anzahl Seiten: 10
Reichweite: International

Beteiligte

AutorInnen / HerausgeberInnen: DI Dr. Kerstin Oppelt, Priv.-Doz. Dr. Daniel Ayuk Mbi Egbe, Assoz.Univprof. Dr. Uwe Monkowius, DI Dr. Manuela List, Dr. Manfred Zabel, O.Univ.-Prof. Mag. Dr. Serdar Niyazi Sariciftci, Univ.-Prof. Dr. Günther Knör (Ed.)

Forschungseinheiten der JKU:

Wissenschaftszweige: 1227 Photophysik | 1303 Anorganische Chemie | 1304 Biochemie | 1306 Chemische Technologie | 1311 Photochemie | 1315 Strukturchemie | 1327 Spektroskopie (auch: Molekül-) | 1441 Nanotechnologie | 1443 Photobiologie | 1904 Naturwissenschaften interdisziplinär | 1907 Umweltforschung | 2919 Energieforschung | 3207 Krebsforschung | 3210 Medizinische Chemie

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