Tag: 900-1000

《Synthesis, electronic structure and NH-tautomerism of novel mono- and dibenzoannelated phthalocyanines》 was published in Dyes and Pigments in 2020. These research results belong to Yagodin, Alexey V.; Martynov, Alexander G.; Gorbunova, Yulia G.; Tsivadze, Aslan Yu. Application of 51364-51-3 The article mentions the following:

Novel low-symmetry benzoannelated metal-free phthalocyanines of A3B-, ABAB- and AABB-types were synthesized by statistical condensation of phthalonitrile bearing bulky solubilizing groups (fragment A) and new naphthalonitrile with OH-terminated diethylene glycol anchors (fragment B). Comprehensive phys.-chem. characterization of the synthesized macrocycles allowed to reveal the electronic effects associated with the extension of π-system. The interpretation of the observed effects was performed by theor. calculations where simplified TD-DFT approach at CAM-B3LYP/6-31G(d) level was successfully used for the first time to predict excitation energies of Q-band region in UV-visible spectra of low-symmetry phthalocyanines with errors not exceeding 0.03 eV. Altogether it allowed to identify the spectroscopic signatures of various tautomers including energy-unfavorable forms. In addition to this study using Tris(dibenzylideneacetone)dipalladium(0), there are many other studies that have used Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Application of 51364-51-3) was used in this study.

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Application of 51364-51-3 It also used for palladium-catalyzed one-pot synthesis of tricyclic indolines, in the Suzuki-Miyaura coupling of 2-pyridyl nucleophiles and cross-coupling of aryl halides with aryl boronic acids.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

《Engineering the morphology of palladium nanostructures to tune their electrocatalytic activity in formic acid oxidation reactions》 was written by Pramanick, Bulti; Kumar, Trivender; Halder, Aditi; Siril, Prem Felix. SDS of cas: 51364-51-3 And the article was included in Nanoscale Advances in 2020. The article conveys some information:

Pd nanomaterials can be cheaper alternative catalysts for the electrocatalytic formic acid oxidation reaction (FAOR) in fuel cells. The size and shape of the nanoparticles and crystal engineering can play a crucial role in enhancing the catalytic activities of Pd nanostructures. A systematic study on the effect of varying the morphol. of Pd nanostructures on their catalytic activities for FAOR is reported here. Palladium nanoparticles (Pd0D), nanowires (Pd1D) and nanosheets (Pd2D) could be synthesized by using swollen liquid crystals as ‘soft’ templates. Swollen liquid crystals are lyotropic liquid crystals that are formed from a quaternary mixture of a surfactant, cosurfactant, brine and Pd salt dissolved in oil. Pd1D nanostructures exhibited 2.7 and 19 fold higher c.d. than Pd0D and Pd2D nanostructures in the FAOR. The Pd1D nanostructure possess higher electrochem. active surface area (ECSA), better catalytic activity, stability, and lower impedance to charge transfer when compared to the Pd0D and Pd2D nanostructures. The presence of relatively higher amounts of crystal defects and enriched (100) crystal facets in the Pd1D nanostructure were found to be the reasons for their enhanced catalytic activities. In the experiment, the researchers used many compounds, for example, Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3SDS of cas: 51364-51-3)

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is used in the preparation of semiconducting polymers processed from nonchlorinated solvents into high performance thin film transistors.SDS of cas: 51364-51-3It is used as catalyst for the synthesis of epoxides, alpha-arylation of ketones, in combination with BINAP for the asymmetric heck arylation of olefins, site-selective benzylic sp3 palladium-catalyzed direct arylation and homoallylic diamination of terminal olefins.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

《Tris dba ameliorates accelerated and severe lupus nephritis in mice by activating regulatory T cells and autophagy and inhibiting the nlrp3 infiammasome》 was written by Wu, Chung-Yao; Hua, Kuo-Feng; Chu, Ching-Liang; Yang, Shin-Ruen; Arbiser, Jack L.; Yang, Sung-Sen; Lin, Yu-Chuan; Liu, Feng-Cheng; Yang, Shun-Min; Ka, Shuk-Man; Chen, Ann. Product Details of 51364-51-3 And the article was included in Journal of Immunology in 2020. The article conveys some information:

Tris (dibenzylideneacetone) dipalladium (Tris DBA), a small-mol. palladium complex, has been shown to inhibit cell growth and proliferation in pancreatic cancer, lymphocytic leukemia, and multiple myeloma. In the current study, we examined the therapeutic effects of Tris DBA on glomerular cell proliferation, renal inflammation, and immune cells. Treatment of accelerated and severe lupus nephritis (ASLN) mice with Tris DBA resulted in improved renal function, albuminuria, and pathol., including measurements of glomerular cell proliferation, cellular crescents, neutrophils, fibrinoid necrosis, and tubulointerstitial inflammation in the kidneys as well as scoring for glomerulonephritis activity. The treated ASLN mice also showed significantly decreased glomerular IgG, IgM, and C3 deposits. Furthermore, the compound was able to 1) inhibit bone marrow-derived dendritic cell-mediated T cell functions and reduce serum anti-dsDNA autoantibody levels; 2) differentially regulate autophagy and both the priming and activation signals of the NLRP3 inflammasome; and 3) suppress the phosphorylation of JNK, ERK, and p38 MAPK signaling pathways. Tris DBA improved ASLN in mice through immunoregulation by blunting the MAPK (ERK, JNK)-mediated priming signal of the NLRP3 inflammasome and by regulating the autophagy/NLRP3 inflammasome axis. These results suggest that the pure compound may be a drug candidate for treating the accelerated and deteriorated type of lupus nephritis. In the experiment, the researchers used many compounds, for example, Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Product Details of 51364-51-3)

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is used in the preparation of semiconducting polymers processed from nonchlorinated solvents into high performance thin film transistors.Product Details of 51364-51-3It is used as catalyst for the synthesis of epoxides, alpha-arylation of ketones, in combination with BINAP for the asymmetric heck arylation of olefins, site-selective benzylic sp3 palladium-catalyzed direct arylation and homoallylic diamination of terminal olefins.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

《High-Electron Mobility Tetrafluoroethylene-Containing Semiconducting Polymers》 was written by Chen, Zhihui; Zhang, Weifeng; Wei, Congyuan; Zhou, Yankai; Pan, Yuchai; Wei, Xuyang; Huang, Jianyao; Wang, Liping; Yu, Gui. Product Details of 51364-51-3 And the article was included in Chemistry of Materials in 2020. The article conveys some information:

Herein, we report a series of tetrafluoroethylene (TFE)-containing semiconducting polymers PNBDO-FDTEm (m = 90, 80, 70, 60, and 0), in which the TFE segments were first introduced into polymeric main chains as flexible π-nonconjugated nodes, and its fully conjugated analog PNBDO-FDTE100. Our results indicate that the TFE segment is quite compatible with the NBDO-alt-FDTE conjugated matrix system. The HOMO/LUMO energy levels (approx. -6.0/-4.0 eV) and optical band gaps (1.28 eV) remain almost the same in the polymers with the TFE content varying from 0% to 40%. The polymers PNBDO-FDTEm (m = 90, 80, 70, and 60) have similar highly ordered mol. packing with close π-π stacking in a thin film as PNBDO-FDTE100 does, implying that the TFE segments exert no clear neg. influences on the mol. packing of these polymers either. PNBDO-FDTE100 exhibited a much high electron mobility (μe) of 7.43 cm2 V-1 s-1, while PNBDO-FDTE90 and PNBDO-FDTE80 also showed impressively high μe values of 7.25 and 6.00 cm2 V-1 s-1, resp. However, PNBDO-FDTEm (m = 70, 60, and 0) afforded a μe as low as 0.182 cm2 V-1 s-1. We attributed this to the transition of the carrier transport mode caused by the increase in the number of π-nonconjugated nodes. The experimental process involved the reaction of Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Product Details of 51364-51-3)

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is used in the preparation of semiconducting polymers processed from nonchlorinated solvents into high performance thin film transistors.Product Details of 51364-51-3It is used as catalyst for the synthesis of epoxides, alpha-arylation of ketones, in combination with BINAP for the asymmetric heck arylation of olefins, site-selective benzylic sp3 palladium-catalyzed direct arylation and homoallylic diamination of terminal olefins.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

COA of Formula: C51H42O3Pd2In 2019 ,《Improved solubility of asymmetric tetraethynylporphyrin derivatives for solution-processed organic solar cells》 was published in Organic Electronics. The article was written by Ogumi, Keisuke; Nakagawa, Takafumi; Okada, Hiroshi; Matsuo, Yutaka. The article contains the following contents:

Asym. magnesium tetraethynylporphyrin derivatives bearing two diketopyrrolopyrrole (DPP) units and two different aryl units were synthesized by multistage Sonogashira coupling reactions. According to saturated UV-Vis-NIR spectra, the solubility of the asym. porphyrin derivatives was superior to that of sym. porphyrin derivatives Frontier orbital energies were investigated in the solution state by differential pulse voltammetry and in the solid state by photoelectron yield spectroscopy and UV-Vis-NIR spectroscopy. Time-dependent d. functional theory calculations were carried out to simulate the UV-Vis-NIR absorption spectra and revealed splitting of the Q band into two bands at 712 nm and 650 nm. The thickness of active layers in solution-processed organic solar cells was influenced by the solubility of the porphyrin derivatives When the compound with the highest solubility was used (2d), the film thickness was 215 nm, which is larger than-the thickness of ∼120 nm reported for sym. porphyrin derivatives Also, the short-circuit c.d. (JSC) was influenced by solubility, especially for compound 2d, compared with other asym. compounds 2a-c. The optimized device conditions using 2d and PC61BM gave JSC of 14.86 mA/cm2, open-circuit voltage of 0.69 V, fill factor of 0.47, and power conversion efficiency of 4.84%. In the experimental materials used by the author, we found Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3COA of Formula: C51H42O3Pd2)

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is used in the preparation of semiconducting polymers processed from nonchlorinated solvents into high performance thin film transistors.COA of Formula: C51H42O3Pd2 It is also used in the synthesis of polymer bulk-heterojunction solar sells as a semiconductor.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Nayak, Animesh; Park, Jaehong; De Mey, Kurt; Hu, Xiangqian; Beratan, David N.; Clays, Koen; Therien, Michael J. published an article in 2021. The article was titled 《Excited-State Dynamics and Nonlinear Optical Properties of Hyperpolarizable Chromophores Based on Conjugated Bis(terpyridyl)Ru(II) and Palladium and Platinum Porphyrinic Components: Impact of Heavy Metals upon Supermolecular Electro-Optic Properties》, and you may find the article in Inorganic Chemistry.Formula: C51H42O3Pd2 The information in the text is summarized as follows:

A new series of strongly coupled oscillators based upon (porphinato)Pd, (porphinato)Pt, and bis(terpyridyl)ruthenium(II) building blocks is described. These RuPPd, RuPPt, RuPPdRu, and RuPPtRu chromophores feature bis(terpyridyl)Ru(II) moieties connected to the (porphinato)metal unit via an ethyne linker that bridges the 4′-terpyridyl and porphyrin macrocycle meso-carbon positions. Pump-probe transient optical data demonstrate sub-picosecond excited singlet-to-triplet-state relaxation. The relaxed lowest-energy triplet (T1) excited states of these chromophores feature absorption manifolds that span the 800-1200 nm spectral region, microsecond triplet-state lifetimes, and large absorptive extinction coefficients [ε(T1 → Tn) > 4 x 104 M-1 cm-1]. Dynamic hyperpolarizability (βλ) values were determined from hyper-Rayleigh light scattering (HRS) measurements carried out at several incident irradiation wavelengths over the 800-1500 nm spectral region. Relative to benchmark RuPZn and RuPZnRu chromophores which showed large βHRS values over the 1200-1600 nm range, RuPPd, RuPPt, RuPPdRu, and RuPPtRu displayed large βHRS values over the 850-1200 nm region. Generalized Thomas-Kuhn sum (TKS) rules and exptl. hyperpolarizability values were utilized to determine excited state-to-excited state transition dipole terms from exptl. electronic absorption data and thus assessed frequency-dependent βλ values, including two- and three-level contributions for both βzzz and βxzx tensor components to the RuPPd, RuPPt, RuPPdRu, and RuPPtRu hyperpolarizability spectra. These analyses qual. rationalize how the βzzz and βxzx tensor elements influence the observed irradiation wavelength-dependent hyperpolarizability magnitudes. The TKS anal. suggests that supermols. related to RuPPd, RuPPt, RuPPdRu, and RuPPtRu will likely feature intricate dependences of exptl. determined βHRS values as a function of irradiation wavelength that derive from substantial singlet-triplet mixing, and complex interactions among multiple different β tensor components that modulate the long wavelength regime of the nonlinear optical response.Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Formula: C51H42O3Pd2) was used in this study.

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Formula: C51H42O3Pd2 It is used as a catalyst precursor for palladium-catalyzed carbon-nitrogen bond formation, conversion of aryl chlorides, triflates and nonaflates to nitroaromatics.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

《Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff》 was written by Kim, Jong Uk; Park, In Seob; Chan, Chin-Yiu; Tanaka, Masaki; Tsuchiya, Youichi; Nakanotani, Hajime; Adachi, Chihaya. Computed Properties of C51H42O3Pd2 And the article was included in Nature Communications in 2020. The article conveys some information:

Aromatic organic deep-blue emitters that exhibit thermally activated delayed fluorescence (TADF) can harvest all excitons in elec. generated singlets and triplets as light emission. However, blue TADF emitters generally have long exciton lifetimes, leading to severe efficiency decrease, i.e., rolloff, at high c.d. and luminance by exciton annihilations in organic light-emitting diodes (OLEDs). Here, we report a deep-blue TADF emitter employing simple mol. design, in which an activation energy as well as spin-orbit coupling between excited states with different spin multiplicities, were simultaneously controlled. An extremely fast exciton lifetime of 750 ns was realized in a donor-acceptor-type mol. structure without heavy metal elements. An OLED utilizing this TADF emitter displayed deep-blue electroluminescence (EL) with CIE chromaticity coordinates of (0.14, 0.18) and a high maximum EL quantum efficiency of 20.7%. Further, the high maximum efficiency were retained to be 20.2% and 17.4% even at high luminance. The experimental process involved the reaction of Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Computed Properties of C51H42O3Pd2)

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is used in the preparation of semiconducting polymers processed from nonchlorinated solvents into high performance thin film transistors.Computed Properties of C51H42O3Pd2It is used as catalyst for the synthesis of epoxides, alpha-arylation of ketones, in combination with BINAP for the asymmetric heck arylation of olefins, site-selective benzylic sp3 palladium-catalyzed direct arylation and homoallylic diamination of terminal olefins.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

In 2019,RSC Advances included an article by Heintges, Gael H. L.; Janssen, Rene A. J.. Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0). The article was titled 《On the homocoupling of trialkylstannyl monomers in the synthesis of diketopyrrolopyrrole polymers and its effect on the performance of polymer-fullerene photovoltaic cells》. The information in the text is summarized as follows:

Homocoupling of monomers in a palladium-catalyzed copolymerization of donor-acceptor polymers affects the perfect alternating structure and may deteriorate the performance of such materials in solar cells. Here we investigate the effect of homocoupling bis(trialkylstannyl)-thiophene and -bithiophene monomers in two low band gap poly(diketopyrrolopyrrole-alt-oligothiophene) polymers by deliberately introducing extended oligothiophene defects in a controlled fashion. We find that extension of the oligothiophene by one or two thiophenes and creating defects up to at least 10% does not significantly affect the opto-electronic properties of the polymers or their photovoltaic performance as electron donor in solar cells in combination with [6,6]-Ph C 71 butytic acid Me ester as acceptor. By using model reactions, we further demonstrate that for the optimized synthetic protocol and palladium-catalyst system the naturally occurring defect concentraion in the polymers is expected to be less than 0.5%. The results came from multiple reactions, including the reaction of Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0))

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0) It is used as a catalyst precursor for palladium-catalyzed carbon-nitrogen bond formation, conversion of aryl chlorides, triflates and nonaflates to nitroaromatics.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Garcia Espinosa, Luis D.; Williams-Pavlantos, Kayla; Turney, Keaton M.; Wesdemiotis, Chrys; Eagan, James M. published their research in ACS Macro Letters in 2021. The article was titled 《Degradable Polymer Structures from Carbon Dioxide and Butadiene》.Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0) The article contains the following contents:

The utilization of carbon dioxide as a polymer feedstock is an ongoing challenge. This report describes the catalytic conversion of carbon dioxide and an olefin comonomer, 1,3-butadiene, into a polymer structure that arises from divergent propagation mechanisms. Disubstituted unsaturated delta-valerolactone 1 (EVL) was homopolymerized by the bifunctional organocatalyst 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) to produce a hydrolytically degradable polymer. Isolation and characterization of reaction intermediates using 1H, 13C, COSY, HSQC, and MS techniques revealed a vinylogous 1,4-conjugate addition dimer forms in addition to polymeric materials. Polymer number-average mol. weights up to 3760 g/mol and glass transition temperatures in the range of 25 to 52°C were measured by GPC and DSC, resp. The polymer microstructure was characterized by 1H, 13C, FTIR, MALDI-TOF MS, and ESI tandem MS/MS. The olefin/CO2-derived materials depolymerized by hydrolysis at 80°C in 1 M NaOH. This method and the observed chem. structures expand the materials and properties that can be obtained from carbon dioxide and olefin feedstocks. In the experiment, the researchers used Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0))

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Application In Synthesis of Tris(dibenzylideneacetone)dipalladium(0) It also used for palladium-catalyzed one-pot synthesis of tricyclic indolines, in the Suzuki-Miyaura coupling of 2-pyridyl nucleophiles and cross-coupling of aryl halides with aryl boronic acids.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Guo, Han; Yang, Chi-Yuan; Zhang, Xianhe; Motta, Alessandro; Feng, Kui; Xia, Yu; Shi, Yongqiang; Wu, Ziang; Yang, Kun; Chen, Jianhua; Liao, Qiaogan; Tang, Yumin; Sun, Huiliang; Woo, Han Young; Fabiano, Simone; Facchetti, Antonio; Guo, Xugang published their research in Nature (London, United Kingdom) in 2021. The article was titled 《Transition metal-catalysed molecular n-doping of organic semiconductors》.Related Products of 51364-51-3 The article contains the following contents:

Chem. doping is a key process for investigating charge transport in organic semiconductors and improving certain (opto)electronic devices1-9. N(electron)-doping is fundamentally more challenging than p(hole)-doping and typically achieves a very low doping efficiency (η) of less than 10%1,10. An efficient mol. n-dopant should simultaneously exhibit a high reducing power and air stability for broad applicability1,5,6,9,11, which is very challenging. Here we show a general concept of catalyzed n-doping of organic semiconductors using air-stable precursor-type mol. dopants. Incorporation of a transition metal (for example, Pt, Au, Pd) as vapor-deposited nanoparticles or solution-processable organometallic complexes (for example, Pd2(dba)3) catalyzes the reaction, as assessed by exptl. and theor. evidence, enabling greatly increased η in a much shorter doping time and high elec. conductivities (above 100 S cm-1; reference 12). This methodol. has technol. implications for realizing improved semiconductor devices and offers a broad exploration space of ternary systems comprising catalysts, mol. dopants and semiconductors, thus opening new opportunities in n-doping research and applications12, 13.Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Related Products of 51364-51-3) was used in this study.

Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3) is the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Related Products of 51364-51-3 It is used as a catalyst precursor for palladium-catalyzed carbon-nitrogen bond formation, conversion of aryl chlorides, triflates and nonaflates to nitroaromatics.

Referemce:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI