Tag: M.W:600-700

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.Hu, Shimin; Zeng, Jiajie; Zhu, Xiangyu; Guo, Jingjing; Chen, Shuming; Zhao, Zujin; Tang, Ben Zhong researched the compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III)( cas:435294-03-4 ).Recommanded Product: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III).They published the article 《Universal Bipolar Host Materials for Blue, Green, and Red Phosphorescent OLEDs with Excellent Efficiencies and Small-Efficiency Roll-Off》 about this compound( cas:435294-03-4 ) in ACS Applied Materials & Interfaces. Keywords: phosphorescent organic LED blue green red universal bipolar host; aggregation-induced emission; bipolar host; carrier transport; energy transfer; phosphorescent OLEDs. We’ll tell you more about this compound (cas:435294-03-4).

Host materials are indispensable for the fabrication of organic light-emitting diodes (OLEDs) with phosphorescent emitters, but high-quality host materials that can efficiently and simultaneously function in blue, green, and red phosphorescent OLEDs (PHOLEDs) are much rare. Four bipolar materials are developed using carbazole and 9,9-dimethyl-9,10-dihydroacridine as hole-transporting groups, pyridine as electron-transporting groups, and biphenyl and m-methylbiphenyl as π-spacers. The crystal and electronic structures indicate that these materials have highly twisted conformations, which endow them with aggregation-induced emission features, intramol. charge transfer processes, wide energy band gaps, and high triplet energies. The carrier transport ability and energy transfer property analyses show that these materials are able to achieve balanced hole and electron transports and can serve as bipolar host materials for PHOLEDs. Monochromatic PHOLEDs with different phosphorescent dopants, including blue-emissive FIrpic, green-emissive Ir(ppy)2(acac), and red-emissive Ir(piq)2(acac), are fabricated by employing these 4 host materials. The green PHOLEDs can provide an impressive luminance of up to 230,200 cd m-2. Based on an identical host material, excellent external quantum efficiencies ≤25.12, 24.73, and 19.71%, as well as minor efficiency roll-off, are attained for blue, green, and red PHOLEDs, resp., clearly demonstrating the promising applications as universal bipolar host materials in PHOLEDs with monochromatic light and white light.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Recommanded Product: 435294-03-4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about White light emission produced by CTMA-DNA nanolayers embedded with a mixture of organic light-emitting molecules. Author is Chopade, Prathamesh; Dugasani, Sreekantha Reddy; Jeon, Sohee; Jeong, Jun-Ho; Park, Sung Ha.

In this regard, DNA can be utilized as a competent scaffold for hosting functional nanomaterials to develop a designated platform in the field of bionanotechnol. Here, we introduce a novel methodol. to construct CTMA-modified DNA nanolayers (CDNA NLs) embedded with single (e.g., red, green, and blue), double (violet, yellow, and orange), and triple (white) iridium-based organic light-emitting materials (OLEMs, including Ir(piq)2(acac) for red, Ir(ppy)2(acac) for green, FIrpic for blue) that can serve as active light-emitting layers. The OLEM-embedded CDNA NLs were fabricated using simple solution processes, and their spectral properties were investigated via Fourier-transform IR (FTIR), X-ray photoelectron (XPS), UV-Vis, and photoluminescence (PL) spectroscopies. FTIR anal. of OLEM-embedded CDNA NLs suggested that the complexes are stable and chem. inert. The wide band gap characteristics (~4.76 eV) and relatively high optical quality (no absorption in the visible region) of OLEM-embedded CDNA NLs were observed in UV-Vis absorption measurements. We observed PL emission in OLEM-embedded CDNA NLs, which was caused by the energy transfer from CDNA to OLEMs (ligand-centered and metal to ligand charge transfer). Lastly, a white light-emitting OLEM-embedded CDNA thin film was constructed using a combination of appropriate concentrations of red, green, and blue OLEMs.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Highly Efficient Deep Blue Aggregation-Induced Emission Organic Molecule: A Promising Multifunctional Electroluminescence Material for Blue/Green/Orange/Red/White OLEDs with Superior Efficiency and Low Roll-Off, the main research direction is blue aggregation emission organic multifunctional electroluminescent LED efficiency rolloff.HPLC of Formula: 435294-03-4.

For the constant demand of organic light-emitting diodes (OLEDs) with high efficiency, long lifetime, and low cost for display and lighting applications, the development of high-performance organic electroluminescence materials is key. Aggregation-induced emission (AIE) luminogens (AIEgens) provide a promising choice for their excellent performance in nondoped devices. A multifunctional deep blue AIE material, which can be used not only as an excellent blue emitter but also as a good host of green/orange/red phosphors, is reported. A deep blue nondoped OLED with a CIEy of 0.08 and high external quantum efficiency (EQE) of 7.0% is achieved. Green/orange/red phosphorescent OLEDs with high efficiency and low roll-off are obtained. Hybrid white OLEDs (WOLEDs) based on the deep blue AIEgen exhibit simultaneously high CRI (>90), excellent efficiency (EQEmax> 25%, PEmax = 99.9 lm W-1 for 2-color WOLEDs, PEmax = 60.7 lm W-1 for 4-color WOLEDs), low roll-off (PE1000nit = 72.1 lm W-1 for 2-color WOLEDs, PE1000nit = 43.5 lm W-1 for 4-color WOLEDs), and superior stable color, indicative of the multifunction of AIEgens. Accordingly, this work opens a new direction for achieving high-performance OLEDs, particularly offering a smart but simple way to depress the efficiency roll-off and reduce the cost of OLEDs for practical applications.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Recommanded Product: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III). The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Pyrene-based hyperbranched porous polymers with doped Ir(piq)2(acac) red emitter for highly efficient white polymer light-emitting diodes. Author is Wu, Yuling; Li, Xuefeng; Zhao, Haocheng; Li, Jie; Miao, Yanqin; Wang, Hua; Zhu, Furong; Xu, Bingshe.

Here, we designed and prepared a series of hyperbranched porous polymers constructed using fluorene branches and pyrene core, and all hyperbranched porous polymers exhibit intense blue fluorescence, good morphol. stability, and high thermal stability. Further, it is found that the aperture sizes for hyperbranched porous polymers can be adjusted by simply changing the content of pyrene and fluorene in the synthesis process. When the feed ratios of pyrene in the total polymers is 15 mol%, the optimized aperture size was obtained, which is slightly larger than the maxlength of complementary red emitter Bis(1-phenylisoquinoline)(acetylacetonate)iridium (III) (Ir(piq)2acac), indicating the Ir(piq)2acac can well distributed in the apertures of hyperbranched porous polymers in co-doped film of Ir(piq)2acac and hyperbranched porous polymers. The fabricated polymer-light-emitting diode (PLED) with such co-doped film as light-emitting layer realizes good white emission with almost equal blue and red emission intensity from hyperbranched porous polymers and Ir(piq)2acac. The balanced electroluminescent (EL) spectra contribute to ideal Commission Internationale de l’Eclairage (CIE) coordinate of (0.326, 0.374) located at white light zone. In addition, the device also achieves high device performance with maximum luminance and current efficiency reaching 5369 cd/m2 and 8.35 cd/A, resp. We believe that such porous-structure polymers have huge potential applications in the development of highly efficient white PLEDs with reducing production cost.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Electric Literature of C35H27N2O2Ir. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Determination of emitting dipole orientation in organic light emitting diodes. Author is Jiang, Nan; Yang, Han-Nan; Man, Jia-Xiu; Zhang, Tao; He, Shou-Jie; Wang, Deng-Ke; Lu, Zheng-Hong.

The dipole orientation of a light-emitting mol. dictates the external quantum efficiency (EQE) of an organic light emitting diode (OLED). In this paper, we studied both exptl. and theor. relationships between dipole orientation and measurable optical properties of working OLEDs. Theor. electroluminescence (EL) spectrum, EQE, and luminance angle distribution are simulated by incorporating the dipole radiation pattern into Fabry- Perot cavity theory with horizontal dipole ratio as a variable parameter. The horizontal ratio is determined by optimizing the fitness of theor. EL spectra to the exptl. data and EL angular distribution. We show that the optical model proposed in this paper describes well the emission dipole dependent device optical data including EL spectra, EQEs, and EL luminance angular distributions. The emission fill factor (EFF), defined as the area ratio of EL angular distribution to the Lambertian curve, is found to follow a linear relationship with horizontal dipole ratio. These results provide a simple guide to deduce dipole orientations in working OLEDs.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Dual-emitting nanocomposites for oxygen-carrying capacity analysis and boosted singlet oxygen generation in stored red blood cells, published in 2019-12-31, which mentions a compound: 435294-03-4, mainly applied to conjugated polymer nanoconjugate oxygen detection red blood cell, Name: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III).

We combined the unique natural oxygen transporting function of red blood cells (RBCs) with photosensitive nanocomposites to create biomaterials with strong singlet oxygen (1O2) generation. During cold storage for a long time, structural changes to RBCs may occur, which reduce their oxygen carrying capacity. The nanocomposite developed herein featured dual emission characteristic, which enabled evaluation of the status of the RBCs. On the basis of energy transfer from the conjugated polymer to iridium(III) complexes, the formed nanocomposites show intense, long-lived and oxygen-sensitive emission. When modified with 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethyleneglycol)-2000], the nanocomposites non-invasively entered RBCs through hydrophobic interactions. We measured the quenching effect of oxygen on the emission of the iridium(III) complexes. The differential fluorescent signals and fluorescence lifetime images indicated the storage history of the RBCs. RBCs in good condition stored oxygen. When engineered with nanocomposites, RBCs generated large amounts of cytotoxic 1O2 upon irradiation These decorated RBCs might serve as a new kind of photosensitive biomaterial.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Formula: C35H27N2O2Ir. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Imidazolyl-Phenylcarbazole-Based Host Materials and Their Use for Co-host Designs in Phosphorescent OLEDs. Author is Yi, Rong-Huei; Lei, Ya-Chun; Tseng, Yeh-Hsiang; Lin, Yi-Fan; Cheng, Yen-Chia; Fang, Yu-Chuan; Ho, Cheng-Yung; Tsai, Wei-Wen; Chang, Chih-Hao; Lu, Chin-Wei.

In recent years, owing to the demand for high-efficiency phosphorescent organic light-emitting devices (PhOLEDs), many studies were conducted on the development of bipolar host materials. Imidazolyl-phenylcarbazole-based host materials, i. e., i.m.-CzP, i.m.-CzPCz, i.m.-CzPCMe3, and i.m.-OCzP, were synthesized to obtain high-efficiency green and red-emitting PhOLEDs. With i.m.-OCzP as the host, satisfactory peak efficiencies of 22.2 (77.0 cd A-1 and 93.1 lm W-1) and 14.1% (9.0 cd A-1 and 10.1 lm W-1) could be obtained, resp. To further improve the performance of the devices, an electron transport material, bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine (B3PyMPM) was selected to construct a co-hosted system. The efficiency of i.m.-OCzP combined with B3PyMPM forming co-hosts could also achieve high values of 23.0 (80.0 cd A-1 and 98.8 lm W-1) and 16.5% (10.2 cd A-1 and 13.4 lm W-1) for green and red PhOLEDs, resp. These results exhibited that the proposed bipolar hosts have great flexibility in adjusting the carrier balance of EML in OLEDs, demonstrating their ingenious design and high potential.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Imidazolyl-Phenylcarbazole-Based Host Materials and Their Use for Co-host Designs in Phosphorescent OLEDs.Formula: C35H27N2O2Ir.

In recent years, owing to the demand for high-efficiency phosphorescent organic light-emitting devices (PhOLEDs), many studies were conducted on the development of bipolar host materials. Imidazolyl-phenylcarbazole-based host materials, i. e., i.m.-CzP, i.m.-CzPCz, i.m.-CzPCMe3, and i.m.-OCzP, were synthesized to obtain high-efficiency green and red-emitting PhOLEDs. With i.m.-OCzP as the host, satisfactory peak efficiencies of 22.2 (77.0 cd A-1 and 93.1 lm W-1) and 14.1% (9.0 cd A-1 and 10.1 lm W-1) could be obtained, resp. To further improve the performance of the devices, an electron transport material, bis-4,6-(3,5-di-3-pyridylphenyl)-2-methylpyrimidine (B3PyMPM) was selected to construct a co-hosted system. The efficiency of i.m.-OCzP combined with B3PyMPM forming co-hosts could also achieve high values of 23.0 (80.0 cd A-1 and 98.8 lm W-1) and 16.5% (10.2 cd A-1 and 13.4 lm W-1) for green and red PhOLEDs, resp. These results exhibited that the proposed bipolar hosts have great flexibility in adjusting the carrier balance of EML in OLEDs, demonstrating their ingenious design and high potential.

In addition to the literature in the link below, there is a lot of literature about this compound(Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III))Formula: C35H27N2O2Ir, illustrating the importance and wide applicability of this compound(435294-03-4).

Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Kim, Sung Moo; Yun, Ju Hui; Han, Si Hyun; Lee, Jun Yeob published the article 《Novel aromatic extended carbazoles as a chemical platform of bipolar hosts for improved lifetime in phosphorescent organic light-emitting diodes》. Keywords: carbazole bipolar host phosphorescent organic light emitting diode.They researched the compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III)( cas:435294-03-4 ).Application of 435294-03-4. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:435294-03-4) here.

Novel aromatic extended carbazoles, 9H-fluoreno[9,1-bc]carbazole, 9H-dibenzo[a,c]carbazole, and 15H-phenanthro[9,10-a]carbazole, were developed as donor moieties constructing bipolar host materials for phosphorescent organic light-emitting diodes. The 9H-fluoreno[9,1-bc]carbazole, 9H-dibenzo[a,c]carbazole, and 15H-phenanthro[9,10-a]carbazole implemented hosts showed high glass transition temperature, bipolar charge transport character, and triplet energy for energy transfer to red phosphorescent emitters. The hosts built on the aromatic extended carbazoles and quinazoline greatly improved the lifetime of red phosphorescent organic light-emitting diodes while enhancing the quantum efficiency. The material characterization data and device anal. results confirmed that the aromatic extended carbazole based host materials are effective to extend the lifetime of the red phosphorescent devices by thermal stability and polaron stability.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Product Details of 435294-03-4. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about Nanoscale Mapping of Morphology of Organic Thin Films. Author is Kim, Jongchan; Hou, Shaocong; Zhao, Haonan; Forrest, Stephen R..

We determine precise nanoscale information about the morphologies of several organic thin film structures using Fourier plane imaging microscopy (FIM). We used FIM microscopy to detect the orientation of mol. transition dipole moments from an extremely low d. of luminescent dye mols., which we call “”morphol. sensors””. The orientation of the sensor mols. is driven by the local film structure and thus can be used to determine details of the host morphol. without influencing it. We use sym. planar phosphorescent dye mols. as the sensors that are deposited into the bulk of organic film hosts during the growth. We demonstrate morphol. mapping with a depth resolution to a few Ångstroms that is limited by the ability to determine thickness during deposition, along with an in-plane resolution limited by optical diffraction. Furthermore, we monitor morphol. changes arising from thermal annealing of metastable organic films that are commonly employed in photonic devices.

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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica