Publications by authors named "Hai-Jun Chi"
Article Synopsis
- Researchers are focused on creating efficient non-doped blue OLEDs with great color purity and minimal efficiency drop for display and lighting uses.
- Two new blue fluorophores, TPA-PO and TPA-DPO, were developed, showing strong thermal stability and efficient light emission due to their unique structures that allow for hybridized local and charge-transfer properties.
- The TPA-DPO OLEDs achieved a maximum external quantum efficiency of 7.99% and maintained good performance at high brightness levels, highlighting the potential of phenanthro[9,10-d]oxazole in developing advanced blue organic light-emitting materials.
Synthesis, photophysical, electrochemical and electroluminescent properties of a novel iridium(III) complex based on 2-phenylbenzo[d]oxazole derivative.
Spectrochim Acta A Mol Biomol Spectrosc
December 2013
A new phosphorescent iridium (III) complex based on 2-(4-tert-butylphenyl)-5-methylbenzo[d]oxazole as main ligand, i.e. bis(2-(4-tert-butylphenyl)-5-methylbenzo[d]oxazole-N,C(2'))iridium(acetylacetonate) [(tmbo)2Ir(acac)], was synthesized for organic light-emitting diodes (OLEDs), and its photophysical, electrochemical and electroluminescent properties were investigated.
View Article and Find Full Text PDF3-(4-Meth-oxy-phen-yl)pyrido[2,3-b]pyrazine.
Acta Crystallogr Sect E Struct Rep Online
September 2010
Article Synopsis
- The molecule C(14)H(11)N(3)O features a benzene ring that is tilted by 14.0 degrees relative to the other fused ring system.
- In the crystal structure, molecules stack along the b axis, connected by π-π interactions with specific distances measured.
- Additional stability in the crystal packing comes from weak intermolecular hydrogen bonds involving carbon and hydrogen with oxygen and nitrogen.
4-[4,5-Bis(pyridin-2-yl)-1H-imidazol-2-yl]phenol monohydrate.
Acta Crystallogr Sect E Struct Rep Online
December 2010
In the title hydrate, C(19)H(14)N(4)O·H(2)O, the dihedral angle between the two pyridine rings is 38.0 (2)°. The dihedral angle between the imidazole and benzene rings is 25.
View Article and Find Full Text PDFcis-Bis[2-(1,3-benzothia-zol-2-yl)-1-(4-fluoro-phen-yl)ethen-yl](pentane-2,4-dionato-κO,O')iridium(III).
Acta Crystallogr Sect E Struct Rep Online
March 2009
In the title compound, [Ir(C(15)H(9)FNS)(2)(C(5)H(7)O(2))], the Ir atom is hexa-coordinated by three chelating ligands, with two cyclo-metalated 2-(1,3-benzothia-zol-2-yl)-1-(4-fluoro-phen-yl)ethenyl ligands showing N,C-bidentate coordination and an O,O'-bidenate pentane-2,4-dionate anion, thereby forming a distorted octa-hedral enviroment.
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