101630-36-8Relevant academic research and scientific papers
Synthesis and OLED characteristics of isomeric phosphine oxides containing naphthoxazole moiety
Kim, Ik-Hwan,Kim, Kyeong Hyeon,Jo, Hyunhee,Lee, Burm-Jong,Kim, Dong-Eun,Shin, Hoon-Kyu
, p. 3298 - 3303 (2017)
2-(2-(Diphenylphosphoryl)phenyl)naphtho[2,3-d]oxazole (2-PPN), 2-(3-(diphenylphosphoryl)phenyl) naphtho[2,3-d]oxazole (3-PPN), and 2-(4-(diphenylphosphoryl)phenyl)naphtho[2,3-d]oxazole (4-PPN) were synthesized as new light-emitting materials based on the phosphine oxide-naphthoxazole structure. The one-pot synthesis of the phosphine-naphthoxazole compound was achieved using PPA as a solvent and as a catalyst for the cyclization reaction. The phosphine structure was oxidized to phosphine oxide using aq. H2O2, and the chemical structures were characterized via 1H-NMR, 13C-NMR, FT-IR, UV-Vis, elemental analysis (EA) and X-ray photoelectron spectroscopy (XPS). TGA under an N2 flow shows that the PPN derivatives were thermally stable at up to 400°C. The photoluminescence (PL) spectra of the PPN derivatives in chloroform exhibited maximum wavelengths at around 439 nm for 2-PPN, 447 nm for 3-PPN, and 436 nm for 4-PPN. Electroluminescence (EL) devices with different configurations (1-4) were fabricated via vacuum deposition, and devices 1-4 emitted greenish-blue light with a maximum emission at around 509 (2-PPN), 498 (2-PPN), 528 (3-PPN) and 501 (4-PPN) nm.
Microwave assisted P–C coupling reactions without directly added P-ligands
Henyecz, Réka,Huszár, Bianka,Keglevich, Gy?rgy,Mucsi, Zoltán
, (2021/12/24)
Our group introduced a green protocol for the Pd(OAc)2- or NiCl2-catalyzed P–C coupling reaction of aryl halides and various > P(O)H-compounds under MW conditions without directly added P-ligands. The reactivity of a few aryl derivatives in the Pd(OAc)2-catalyzed Hirao reaction was also studied. An induction period was observed in the reaction of bromobenzene and diphenylphosphine oxide. Finally, the less known copper(I)-promoted P–C coupling reactions were investigated experimentally. The mechanism was explored by quantum chemical calculations.
Catalyst-free P-C coupling reactions of halobenzoic acids and secondary phosphine oxides under microwave irradiation in water
Jablonkai, Erzsébet,Keglevich, Gy?rgy
, p. 1638 - 1640 (2015/03/14)
4-Bromo and 3-bromobenzoic acids along with 4-iodobenzoic acid underwent P-C coupling reactions with diarylphosphine oxides in the absence of any catalyst in water as the solvent under microwave irradiation. The phosphinoylbenzoic acids obtained were conv
PHOSPHORYL DERIVATIVES WITH NEW STRUCTURES AND ORGANIC ELECTRONIC DEVICES USING THE SAME
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, (2016/11/28)
The present invention relates to phosphoryl derivatives with a novel structure and an organic electronic element using the same. A compound having oxazole, thiazole or pyrazole structures of the present invention increases light emitting efficiency due to the structures acting as a trap of electron or hole, where carbon-phosphorus bonding helps P=O transfer effectively energy by effectively blocking a communication between an aryl group and an electron withdrawing group (EWG). A compound of the present invention can be used not only as a light-emitting material in an organic electronic element but also as a hole-injection, hole-transport, electron-injection, electron-transport and a passivation (capping) material.
Utilization of 1-Cyclobutenylphosphine Oxide as a 2-Phosphinyl-1,3-butadiene Synthon. Synthesis of Functionalized 1-Phosphinylcyclohexenes
Minami, Toru,Chikugo, Tsuguhiko,Hanamoto, Takeshi
, p. 2210 - 2214 (2007/10/02)
The Diels-Alder reactions of 2-(diphenylphosphinyl)-1,3-butadiene, generated in situ from (1-cyclobutenyl)diphenylphosphine oxide, with various unsymmetrical dienophiles such as ethyl acrylate, benzalacetone, benzalacetophenone, crotonaldehyde, acryl meth
