89922-57-6Relevant academic research and scientific papers
Singlet oxygen type photosensitizer material with aggregation-induced emission property as well as preparation method and application of singlet oxygen type photosensitizer material
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, (2021/07/14)
The invention discloses a singlet oxygen type photosensitizer material with aggregation-induced emission performance as well as a preparation method and application of the singlet oxygen type photosensitizer material. The method comprises the following st
Polyfluorene derivative and organic light-emitting device thereof
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Paragraph 0085-0087; 0090-0091, (2018/10/19)
The invention provides a polyfluorene derivative and an organic light-emitting device thereof, and belongs to the technical field of organic photoelectric materials. The derivative has a structure shown as a formula (I). The polyfluorene derivative disclosed by the invention has a larger conjugate plane structure, so that high electron fluidity can be provided; electron-deficient group dibenzofuran, dibenzothiophene, acridine, phenoxazine and phenothiazine structures are introduced to better facilitate the acception of electrons and enable the polyfluorene derivative to have good transmissionperformance; by introducing a bridged structure, on the one hand, the molecular weight of the compound can be enlarged, and the obtained material is enabled to have high glass transition temperature and prevent the crystallization effect; on the other hand, the derivatives are enabled to have certain distortion in three-dimensional stereoscopic structure, and the film-forming property of the derivative is improved. The organic light-emitting device, which is prepared by using the compound as a main body material in a luminescent layer, shows the advantages of low driving voltage and high luminous efficiency; the polyfluorene derivative is an organic luminescent material with excellent performance.
Organic micromolecule material based on 2,6-dimethyl-4-cyanophenyl receptor unit, preparation and application
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Paragraph 0028; 0032; 0033; 0060; 0062; 0065; 0066, (2018/10/19)
The invention belongs to the technical field of organic photoelectric materials, and discloses an organic micromolecule material based on a 2,6-dimethyl-4-cyanophenyl receptor unit, preparation and application. The organic micromolecule material has a structural formula as shown in formula (I), and Ar in the formula shows a phenyl aromatic amine heterocycle or phenyl aromatic amine donor unit. Thematerial has a weak intramolecular charge transfer state, and thus, fluorescence emission of a zone from dark blue to ultraviolet can be realized. Meanwhile, because the molecules have quite short effective conjugated length, the material has high triplet state energy level. In the application of an organic electroluminescent device, the problem of unbalanced charge carriers of a unipolar organicphotoelectric material can be solved effectively, therefore, the structure of the device is simplified, and the performance of the device is improved.
COMPOUND FOR ORGANIC OPTOELECTRONIC DEVICE, ORGANIC LIGHT EMITTING DIODE INCLUDING THE SAME AND DISPLAY INCLUDING THE ORGANIC LIGHT EMITTING DIODE
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, (2016/10/10)
Compound for organic optoelectronic devices, including organic luminous person element and same said device relates to display including organic light emitting device, an organic optoelectronic device represented by formula 1 a provided is a compound for the, excellent electrochemical and thermal stability and and excellent life characteristics, low, even under a low drive voltage optoelectronic devices additive is soluble in the organic monomer a high luminous efficiency can be produced. [Formula 1] Specification the present definition of said formula 1 is described.
Compound For Organic Optoelectronic Device, Organic Light Emitting Diode Including The Same and Display Including The Organic Light Emitting Diode
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, (2016/11/24)
Compound for organic optoelectronic devices, including organic luminous person element and same said device relates to display including organic light emitting device, an organic optoelectronic device represented by formula 1 a provided is a compound for the, excellent electrochemical and thermal stability and and excellent life characteristics, low, even under a low drive voltage optoelectronic devices additive is soluble in the organic monomer a high luminous efficiency can be produced. [Formula 1] Specification the present definition of said formula 1 is described.
Deep blue fluorophores incorporating sulfone-locked triphenylamine: The key for highly efficient fluorescence-phosphorescence hybrid white OLEDs with simplified structure
Li, Yunchuan,Li, Xiang-Long,Cai, Xinyi,Chen, Dongcheng,Liu, Xin,Xie, Gaozhan,Wang, Zhiheng,Wu, Yuan-Chun,Lo, Chang-Cheng,Lien,Peng, Junbiao,Cao, Yong,Su, Shi-Jian
, p. 6986 - 6996 (2015/07/20)
Two novel bipolar isomeric blue fluorophores, PPI-TPA-SO2-1 and PPI-TPA-SO2-2, consisting of electron-withdrawing phenanthro[9,10-d]imidazole and sulfone-locked electron-donating triphenylamine, were designed and synthesized. The sulfone lock induces a more twisted molecular conformation, and thus a higher triplet energy level and better triplet exciton confining ability compared with the analogue TPA-PPI without the sulfone lock. In addition, the introduced sulfone lock also offers the developed materials improved electron affinities and an electron dominant transporting ability. They were utilized as the blue emitter and the host for a yellow phosphorescent emitter to fabricate fluorescence-phosphorescence (F-P) hybrid white organic light-emitting diodes (WOLEDs) in a single-emissive-layer architecture, giving forward-viewing maximum current efficiencies of 44.2 and 47.6 cd A-1, power efficiencies of 49.5 and 53.4 lm W-1, and external quantum efficiencies of 14.4% and 15.6%, respectively, which are much higher than those of the devices based on TPA-PPI (29.5 cd A-1, 33.1 lm W-1, and 9.6%) due to their superior singlet and triplet exciton separation and utilization ability over TPA-PPI. These efficiencies are also the highest values ever reported for the F-P hybrid WOLEDs in a similar architecture, and their power efficiencies are even comparable with most reported highly efficient all phosphorescent WOLEDs without using any out-coupling technology.
Bromination of 10-Phenylphenothiazine and 10-Phenylphenoxazine
Jovanovic, Misa V.,Biehl, Edward R.
, p. 1905 - 1908 (2007/10/02)
The reaction of either 10-phenylphenothiazine (1) with bromine in acetic acid or the cation radical of 1 with bromide ion gives ring substitution only and in accord with customary stoichiometry for nucleophilic substitution of aromatic cation radicals.However, the reaction of 1 with pyridinium bromide perbromide (2) gives predominantly 10-phenyl ring substitution and a small amount of ring substitution products.Evidence is presented which indicates that ring substitution occurs via cation radical whereas 10-phenyl substitution proceeds via electrophilic attack on the neutral molecule 1.Substitution of 10-phenylphenoxazine (4) occurs predominantly but not exclusively on the phenoxazine ring; some bromination does occur on the 10-phenyl ring.In contrast, the reaction of 4 with bromine gives only ring mono- and disubstitution products.These results indicate that both 1 and 4 react similarly under the same conditions.
