So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Hui Yun, Ju; Lim, Junseop; Yeob Lee, Jun; Lee, Yoonkyoo; Chu, Changwoong researched the compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III)( cas:435294-03-4 ).Product Details of 435294-03-4.They published the article 《Triplet Exciton Upconverting Blue Exciplex Host for Deep Blue Phosphors》 about this compound( cas:435294-03-4 ) in Chemistry – A European Journal. Keywords: triplet exciton upconversion blue exciplex host phosphor phosphorescent LED; diode blue emitting phosphorescent triplet exciton upconversion blue exciplex; electroluminescent device organic blue phosphorescent triplet exciton upconversion exciplex; device lifetime; electron transport type host; exciplex host; hole stability; thermally activated delayed fluorescence. We’ll tell you more about this compound (cas:435294-03-4).
A thermally activated delayed fluorescence (TADF)-type exciplex host employing a novel electron-transport type (n-type) type host managing pos. polarons and stabilizing excitons was developed to elongate the device lifetime of deep blue phosphorescent organic light-emitting diodes (PhOLEDs). The bipolar n-type host was designed to prevent hole leakage and secure hole stability while being stabilized under excitons by introducing a CN-modified carbazole moiety as a weak donor. The TADF-type exciplex host-based blue PhOLEDs showed high (>20%) quantum efficiency with a deep blue color coordinate of (0.14, 0.16) and elongated device lifetime. The device operational lifetime of the blue PhOLEDs bearing the TADF-type exciplex host was extended by more than twice compared to that of the exciplex-free unipolar host. This work suggested a design concept of the n-type host to develop the TADF-type exciplex host for deep blue phosphors to reach a long lifespan in the deep blue PhOLEDs.
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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica