Category: 922721-30-0

Phosphorescence color tuning by ligand, and substituent effects of multifunctional iridium(III) cyclometalates with 9-arylcarbazole moieties was written by Ho, Cheuk-Lam;Wang, Qi;Lam, Ching-Shan;Wong, Wai-Yeung;Ma, Dongge;Wang, Lixiang;Gao, Zhi-Qiang;Chen, Chin-Hsin;Cheah, Kok-Wai;Lin, Zhenyang. And the article was included in Chemistry – An Asian Journal in 2009.HPLC of Formula: 922721-30-0 The following contents are mentioned in the article:

The synthesis, isomeric studies, and photophys. characterization of multifunctional cyclometalated Ir(III) complexes containing a fluoro- or Me-substituted 2-[3-(N-phenylcarbazolyl)]pyridine mol. framework are presented. All of the complexes are thermally stable solids and highly efficient electrophosphors. The optical, electrochem., photo-, and electrophosphorescence traits of these Ir phosphors were studied in terms of the electronic nature and coordinating site of the aryl or pyridyl ring substituents. The correlation between the functional properties of these phosphors and the results of d. functional theory calculations was made. Arising from the propensity of the electron-rich carbazolyl group to facilitate hole injection/transport, the presence of such a moiety can increase the highest-occupied MO levels and improve the charge balance in the resulting complexes relative to the parent phosphor with 2-phenylpyridine ligands. Remarkably, the excited-state properties can be manipulated through ligand and substituent effects that allow the tuning of phosphorescence energies from bluish green to deep red. Electrophosphorescent organic light-emitting diodes (OLEDs) with outstanding device performance can be fabricated based on these materials, which show a maximum current efficiency of ∼43.4 cd A^-1, corresponding to an external quantum efficiency of ∼12.9% ph/el (photons per electron) and a power efficiency of ∼33.4 Lm W^-1 for the best device. The present work provides a new avenue for the rational design of multifunctional Ir-carbazolyl electrophosphors, by synthetically tailoring the carbazolyl pyridine ring that can reveal a superior device performance coupled with good color-tuning versatility, suitable for multicolor-display technol. This study involved multiple reactions and reactants, such as 3-Bromo-9-(4-fluorophenyl)-9H-carbazole (cas: 922721-30-0HPLC of Formula: 922721-30-0).

3-Bromo-9-(4-fluorophenyl)-9H-carbazole (cas: 922721-30-0) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.HPLC of Formula: 922721-30-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis, characterization, photophysics and electrophosphorescent applications of phosphorescent platinum cyclometalated complexes with 9-arylcarbazole moieties was written by Ho, Cheuk-Lam;Wong, Wai-Yeung;Yao, Bing;Xie, Zhiyuen;Wang, Lixiang;Lin, Zhenyang. And the article was included in Journal of Organometallic Chemistry in 2009.Product Details of 922721-30-0 The following contents are mentioned in the article:

Cyclometalating Pt(II) complexes with substituted 9-arylcarbazolyl chromophores were synthesized and characterized. These complexes are thermally stable and most of them were characterized by x-ray crystallog. The phosphorescence emissions of the complexes are dominated by ³MLCT excited states. The excited state properties of these complexes can be modulated by varying the electronic characteristics of the cyclometalating ligands via substituent effects, thus allowing the emission to be tuned from bright green to yellow, orange and red light. The correlation between the functional properties of these metallophosphors and the results of d. functional theory calculations was made. Because of the propensity of the electron-rich carbazolyl group to facilitate hole injection/transport, the presence of such moiety can increase the HOMO levels and improve the charge balance in the resulting complexes relative to the parent Pt(II) phosphor with 2-phenylpyridine ligand. The solution-processed electrophosphorescent organic light-emitting diodes doped with these Pt-based phosphors were fabricated which showed a maximum external quantum efficiency of 2.77% for the best device, corresponding to a power efficiency of 3.48 lm/W and a luminance efficiency of 8.49 cd/A. The present work enables the rational design of Pt-carbazolyl electrophosphors by synthetically tailoring the structure of carbazolylpyridine ring that can permit good color-tuning versatility suitable for multi-color display technol. This study involved multiple reactions and reactants, such as 3-Bromo-9-(4-fluorophenyl)-9H-carbazole (cas: 922721-30-0Product Details of 922721-30-0).

3-Bromo-9-(4-fluorophenyl)-9H-carbazole (cas: 922721-30-0) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Product Details of 922721-30-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary