Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 122-03-2, Name is p-Isopropylbenzenecarboxaldehyde, molecular formula is C10H12O. In an article, author is Xin, Lijun,once mentioned of 122-03-2, Application In Synthesis of p-Isopropylbenzenecarboxaldehyde.
Efficient near-infrared-emitting cationic iridium complexes based on highly conjugated cyclometalated benzo[g]phthalazine derivatives
Two near-infrared-(NIR-) emitting cationic iridium(III) complexes, [Ir(dpbpa)(2)(Bphen)]+PF6- (1) and [Ir(dtbpa)(2)(Bphen)]+PF6- (2), were rationally designed and synthesized, where dpbpa, dtbpa, and Bphen represent 1,4-diphenylbenzo[g]-phthalazine, 1,4-di(thiophen-2-yl)benzo[g]phthalazine and 4,7-dipheny1,10-phenanthroline, respectively. By using highly conjugated cyclometalated benzo[g]phthalazine ligands, these two complexes exhibited a significantly large red shift in wavelength to the truly NIR region with maximum peaks at 715 nm for 1 and 775 nm for 2. Complex 1 exhibited unexpectedly improved quantum efficiency up to 6.1% in the solid films. Based on these solution-processable phosphors, NIR organic-light-emitting devices (OLEDs) have been fabricated and demonstrated negligible efficiency roll-off with nearly constant external quantum efficiency around 0.5% over a wide range of current density of 1-100 mA cm(-2). Density functional theory calculations were performed to discover that the newly cyclometalated benzo[g]phthalazine ligands have several areas of superiority over the previous benzo[g]quinoline ligands in views of stronger Ir-N bonds, smaller chelate congestion, higher electron-accepting ability, thus improving the overall phosphorescence of the corresponding iridium complexes in the NIR region.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem