Category: catalyst-ligand

Ayguen, Mehtap; Guillen-Soler, Melanie; Vila-Fungueirino, Jose M.; Kurtoglu, Abdullah; Chamberlain, Thomas W.; Khlobystov, Andrei N.; Gimenez-Lopez, Maria del Carmen published an article in 2021. The article was titled 《Palladium Nanoparticles Hardwired in Carbon Nanoreactors Enable Continually Increasing Electrocatalytic Activity During the Hydrogen Evolution Reaction》, and you may find the article in ChemSusChem.Electric Literature of C51H42O3Pd2 The information in the text is summarized as follows:

Catalysts typically lose effectiveness during operation, with much effort invested in stabilizing active metal centers to prolong their functional lifetime for as long as possible. In this study palladium nanoparticles (PdNP) supported inside hollow graphitised carbon nanofibers (GNF), designated as PdNP@GNF, opposed this trend. PdNP@GNF exhibited continuously increasing activity over 30000 reaction cycles when used as an electrocatalyst in the hydrogen evolution reaction (HER). The activity of PdNP@GNF, expressed as the exchange c.d., was always higher than activated carbon (Pd/C), and after 10000 cycles PdNP@GNF surpassed the activity of platinum on carbon (Pt/C). The extraordinary durability and self-improving behavior of PdNP@GNF was solely related the unique nature of the location of the palladium nanoparticles, i.e., at the graphitic step-edges within the GNF. Transmission electron microscopy imaging combined with spectroscopic anal. revealed an orchestrated series of reactions occurring at the graphitic step-edges during electrocatalytic cycling, in which some of the curved graphitic surfaces opened up to form a stack of graphene layers bonding directly with Pd atoms through Pd-C bonds. This resulted in the active metal centers becoming effectively hardwired into the elec. conducting nanoreactors (GNF), enabling facile charge transport to/from the catalytic centers resulting in the dramatic self-improving characteristics of the electrocatalyst. The experimental process involved the reaction of Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Electric Literature 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.Electric Literature 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

Gu, Chuantao; Wang, Haicheng; Wang, Xiaoxia; Wen, Shuguang; Liu, Xiaoguang; Tan, Weiqiang; Qiu, Meng; Ma, Jiping published their research in RSC Advances in 2021. The article was titled 《Dithieno[3,2-b:2′,3′-d]silole-based conjugated polymers for bioimaging in the short-wave infrared region》.Product Details of 51364-51-3 The article contains the following contents:

The short-wave IR window (SWIR, 900-1700 nm) fluorescence imaging has been demonstrated to have excellent imaging performance in signal/noise ratio and tissue penetration compared to the conventional NIR biol. window (NIR-I, 700-900 nm). Conventional organic SWIR fluorescent materials still suffer from low fluorescence quantum efficiency. In this work, a donor unit with sp3 hybrid configuration and an acceptor unit with small hindered alkyl side chains are employed to construct donor-acceptor (D-A) type conjugated polymers P1 and P2, which were substituted with one or two fluorine atoms. These structural features can alleviate the aggregation-caused quenching (ACQ) and contribute to charge transfer, resulting in a significantly improved fluorescence quantum efficiency. The SWIR fluorescent quantum efficiencies of P1 and P2 nanoparticles are 3.4% and 4.4%, resp., which are some of the highest for organic SWIR fluorophores reported so far. Excellent imaging quality has been demonstrated with P2 nanoparticles for SWIR imaging of the vascular system of nude mice. The results indicate that our design strategy of introducing sp3 hybrid configuration and small hindered alkyl side chains to fabricate conjugated polymers is efficient in improving the fluorescent quantum efficiency as SWIR fluorescent imaging agents for potential clin. practice. 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 the most widely used PdO precursor complex in synthesis and catalysis, in particular as a catalyst for various coupling reactions. Product Details 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

《A Sensor Array for the Nanomolar Detection of Azo Dyes in Water》 was published in ACS Sensors in 2020. These research results belong to Tropp, Joshua; Ihde, Michael H.; Crater, Erin R.; Bell, Noel C.; Bhatta, Rimsha; Johnson, Ian C.; Bonizzoni, Marco; Azoulay, Jason D.. Electric Literature of C51H42O3Pd2 The article mentions the following:

Azo dyes are ubiquitous pollutants that contaminate water supplies and threaten human, biota, and ecosystem health. Their detection and discrimination are a considerable challenge owing to the numerous structural, chem., and optical similarities between dyes, complexity of the wastewater in which they are found, and low environmental concentrations Here, we demonstrate that the inner filter effect (IFE), in combination with conjugated polymer array-based sensing, offers a rapid approach for the quant. profiling of these pollutants. The array was constructed using three anionic conjugated polyelectrolytes whose varying spectroscopic properties led to distinct IFE patterns in the presence of various dyes. These unique fluorescence response patterns were identified and processed using linear discriminant anal. (LDA), enabling the individual identification of 12 closely related azo dyes. To demonstrate the potential for utility in the environment, the array was used to differentiate between these dyes at nanomolar concentrations in water. In the part of experimental materials, we found many familiar compounds, such as Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Electric Literature of C51H42O3Pd2)

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. Electric Literature of C51H42O3Pd2 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

Li, Sasa; Huang, Xia; Gao, Yunlong; Jin, Jian published their research in Organic Letters on August 12 ,2022. The article was titled 《Oxalamide/Amide Ligands: Enhanced and Copper-Catalyzed C-N Cross-Coupling for Triarylamine Synthesis》.COA of Formula: C18H14BrOP The article contains the following contents:

A new protocol for triarylamine synthesis was presented where a wide range of diarylamines couple smoothly with aryl bromides mediated by a copper oxalamide (or amide) catalytic system. Notably, a new non-C2-sym. 1-isoquinolinamide-based N,N-/N,O-bidentate ligand was introduced that could tolerate bulky diarylamines. Plenty of known optoelectronic functional mols. could be synthesized in good to excellent yields. The practicality of this C-N cross-coupling was illustrated by the gram-scale synthesis of a patented thermally activated delayed fluorescence emitter for organic light-emitting diodes. In the part of experimental materials, we found many familiar compounds, such as (3-Bromophenyl)diphenylphosphine oxide(cas: 10212-04-1COA of Formula: C18H14BrOP)

(3-Bromophenyl)diphenylphosphine oxide(cas: 10212-04-1) belongs to mono-phosphine Ligands.Phosphine ligands are the most significant class of ligands for cross-coupling because of the alterability of their electronic and steric properties. Ligands play a key role in stabilizing and activating the central metal atom and are used in reactions, such as transition metal catalyzed cross-coupling.COA of Formula: C18H14BrOP

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

《Tunable low-dimensional self-assembly of H-shaped bichromophoric perylenediimide Gemini in solution》 was published in Nanoscale in 2020. These research results belong to Huang, Yinjuan; Yu, Fei; Cao, Xun; Nie, Lina; Zhang, Pengfei; Xu, Fugui; Gong, Qiuyu; Zhan, Xuejun; Zhao, Kexiang; Huang, Yizhong; Mai, Yiyong; Zhang, Qichun. Category: catalyst-ligand The article mentions the following:

A material with diverse self-assembled morphologies is extremely important and highly desirable because such samples can provide tunable optical and electronic properties, which are critical in applications such as organic photovoltaics, microelectronics and bio-imaging. Moreover, the synthesis and controllable self-assembly of H-shaped bichromophoric perylenediimides (PDIs) are needed to advance these materials in organic photovoltaics, microelectronics and bio-imaging; however, this has remained a great challenge thus far. Here, we successfully synthesize a novel H-shaped bichromophoric PDI Gemini through the palladium-catalyzed coupling reaction. The as-prepared PDI Gemini exhibited unprecedented tunable self-assembly behavior in solution, yielding diverse low-dimensional superstructures, such as one-dimensional (1D) helixes, two-dimensional (2D) rectangular nanocrystals, pyramid-shaped parallelograms, ultralarge micro-sheets, and uniform nanospheres, under different self-assembly conditions. Of particular interest, the 2D hierarchical superstructures along with their formation mechanisms represent the first finding in the self-assembly of PDI-based mols. This study opens a new avenue for tunable self-assembly of conjugated mols. and affords opportunities for the fabrication of novel self-assembled optical and electronic materials based on PDI mols. The experimental part of the paper was very detailed, including the reaction process of Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Category: catalyst-ligand)

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. Category: catalyst-ligand 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

In 2019,Molecules included an article by Sole, Daniel; Perez-Janer, Ferran; Amenta, Arianna; Bennasar, M.-Lluisa; Fernandez, Israel. Safety of Tris(dibenzylideneacetone)dipalladium(0). The article was titled 《Site selectivity in Pd-catalyzed reactions of α-diazo-α-(methoxycarbonyl)acetamides: effects of catalysts and substrate substitution in the synthesis of oxindoles and β-lactams》. The information in the text is summarized as follows:

The Pd-catalyzed intramol. carbene C-H insertion of α-diazo-α-(methoxycarbonyl)acetamides to prepare oxindoles as well as β-lactams was studied. In order to identify what factors influence the selectivity of the processes, we explored how the reactions are affected by the catalyst type, using two oxidation states of Pd and a variety of ligands. It was found that, in the synthesis of oxindoles, ((IMes)Pd(NQ))2 can be used as an alternative to Pd2(dba)3 to catalyze the carbene CArsp2-H insertion, although it was less versatile. On the other hand, it was demonstrated that the Csp3-H insertion leading to β-lactams can be effectively promoted by both Pd(0) and Pd(II) catalysts, the latter being most efficient. Insight into the reaction mechanisms involved in these transformations was provided by DFT calculations In the part of experimental materials, we found many familiar compounds, such as Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Safety 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. Safety 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

《Tris(dibenzylideneacetone)dipalladium(0) (Tris DBA) Abrogates Tumor Progression in Hepatocellular Carcinoma and Multiple Myeloma Preclinical Models by Regulating the STAT3 Signaling Pathway》 was written by Arora, Loukik; Mohan, Chakrabhavi Dhananjaya; Yang, Min Hee; Rangappa, Shobith; Deivasigamani, Amudha; Kumar, Alan Prem; Kunnumakkara, Ajaikumar B.; Garg, Manoj; Chinnathambi, Arunachalam; Alharbi, Sulaiman Ali; Alahmadi, Tahani Awad; Rangappa, Kanchugarakoppal S.; Hui, Kam Man; Sethi, Gautam; Ahn, Kwang Seok. Computed Properties of C51H42O3Pd2This research focused ontri dibenzylideneacetone dipalladium xenograft signaling inhibitor abrogate tumor progression; SHP2; STAT3 signaling inhibitor; Tris DBA; orthotopic; xenograft. The article conveys some information:

Simple Summary: STAT3 is a major oncogenic transcription factor that is constitutively activated in many types of human cancers, including hepatocellular carcinoma (HCC) and multiple myeloma (MM). Many STAT3 inhibitors have gained momentum in clin. trials towards the treatment of various cancers. In the present study, we have investigated the STAT3 inhibitory efficacy of Tris DBA, a palladium-based compound, in HCC and MM cancer cells and preclin. cancer models. Tris(dibenzylideneacetone)dipalladium(0) (Tris DBA) abrogated the STAT3 signaling pathway in both models by elevating the expression of SHP2. Functionally, Tris DBA inhibited cell proliferation, migration, invasion, and regressed tumor metastasis. Although many studies propose Tris DBA as a modulator of MAPK, Akt, phospho-S6 kinase, and N-myristoyltransferase-1, we have comprehensively demonstrated for the first time that Tris DBA is an inhibitor of STAT3 signaling in preclin. cancer models. These results support the consideration of Tris DBA in clin. trials in translational relevance. Abstract: STAT3 is an oncogenic transcription factor that controls the expression of genes associated with oncogenesis and malignant progression. Persistent activation of STAT3 is observed in human malignancies, including hepatocellular carcinoma (HCC) and multiple myeloma (MM). Here, we have investigated the action of Tris(dibenzylideneacetone) dipalladium 0 (Tris DBA) on STAT3 signaling in HCC and MM cells. Tris DBA decreased cell viability, increased apoptosis, and inhibited IL-6 induced/constitutive activation of STAT3, JAK1, JAK2, and Src in HCC and MM cells. Tris DBA downmodulated the nuclear translocation of STAT3 and reduced its DNA binding ability. It upregulated the expression of SHP2 (protein and mRNA) to induce STAT3 dephosphorylation, and the inhibition of SHP2 reversed this effect. Tris DBA downregulated the expression of STAT3-driven genes, suppressed cell migration/invasion. Tris DBA significantly inhibited tumor growth in xenograft MM and orthotopic HCC preclin. mice models with a reduction in the expression of various prosurvival biomarkers in MM tumor tissues without displaying significant toxicity. Overall, Tris DBA functions as a good inhibitor of STAT3 signaling in preclin. HCC and MM models.Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Computed Properties of C51H42O3Pd2) was used in this study.

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 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

Formula: C51H42O3Pd2In 2020 ,《14.4% efficiency all-polymer solar cell with broad absorption and low energy loss enabled by a novel polymer acceptor》 was published in Nano Energy. The article was written by Jia, Tao; Zhang, Jiabin; Zhong, Wenkai; Liang, Yuanying; Zhang, Kai; Dong, Sheng; Ying, Lei; Liu, Feng; Wang, Xiaohui; Huang, Fei; Cao, Yong. The article contains the following contents:

All-polymer solar cells (All-PSCs) offer several distinct merits including superior thermal stability and flexibility. Here, we report a novel polymer acceptor PJ1 that exhibits a narrow band gap around 1.4 eV and a high extinction coefficient about 1.39 ×105 cm-1. When PJ1 is blended with donor polymer PBDB-T, all-PSC with a record power conversion efficiency (PCE) of 14.4% is achieved, which is mainly attributed to the broad absorption, efficient charge separation and collection, and low energy loss. The synergetic effects of mol. weight of PJ1 on the photovoltaic performance are also investigated. It is found that the increase in mol. weight can result in the red-shift of absorption along with slight enhancement of extinction coefficient, which therefore benefits photocurrent. In addition, all-PSC based on PJ1 demonstrate much better thermal stability than the control device based on small mol. acceptor (TTPBT-IC), as evidenced by the insignificant morphol. change of PBDB-T:PJ1 vs. excessive phase separation of PBDB-T:TTPBT-IC when annealed at 150°C. Of particular interest is that the all-PSCs based on PBDB-T:PJ1 can retain high PCEs even when the thickness of photoactive layer is increased over 300 nm (PCE of 12.1%) or the device area is enlarged to 1 cm2 (PCE of 13.0%). In the experiment, the researchers used many compounds, for example, Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Formula: 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.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

In 2019,Solar RRL included an article by Lei, Hui; Huang, Bin; Chen, Lie; Chen, Shanshan; Xu, Guodong; Huang, Shaorong; Tan, Yun; Yang, Changduk; Chen, Yiwang. Product Details of 51364-51-3. The article was titled 《Improvement in the Efficiency of Alkylsilyl Functionalized Copolymer for Polymer Solar Cells: Face-On Orientation Enhanced by Random Copolymerization》. The information in the text is summarized as follows:

Herein, an alkylsilyl functionalized alternative (D-A1) copolymer with high crystallization property as the polymer matrix and planar [1,2-c:4,5-c]dithiophene-4,8-dione (BDD) block as the second acceptor unit (A2) are selected to construct two D-A1-D-A2 type random copolymers PBDT-TZ-BDD-1/19 and PBDT-TZ-BDD-1/9. It is found that incorporation of a small amount of BDD block into the alkylsilyl functionalized copolymer by random copolymerization can effectively manipulate the energy levels, light absorption, mol. packing and the photovoltaic properties when blended with ITIC (indacenodithieno[3,2-b]thiophene (IT) as the central donor unit and 2- (3-oxo-2,3-dihydroinden-1-ylidene)malononitrile (IC) as end groups). More importantly, random copolymerization provides a beneficial trade-off that the slightly reduced periodic sequence promotes the compatibility with the acceptor, whereas introduction of planar BDD units allows a preferred face-on orientation with enhanced π-π stacking of the random copolymer to facilitate the charge transfer. As a result, the random copolymer PBDT-TZ-BDD-1/19 delivers a significantly higher power conversion efficiency (11.02%) than the alternative binary copolymer counterpart together with the remarkably improved short circuit current and fill factor. These results demonstrate that random polymerization of a small amount of planar units into the highly crystalline polymer matrix is a promising strategy to develop high-performance polymer solar cells. In the experimental materials used by the author, we found Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Product Details of 51364-51-3)

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. Product Details 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

Category: catalyst-ligandIn 2021 ,《Achieving over 17% efficiency of ternary all-polymer solar cells with two well-compatible polymer acceptors》 appeared in Joule. The author of the article were Sun, Rui; Wang, Wei; Yu, Han; Chen, Zeng; Xia, XinXin; Shen, Hao; Guo, Jing; Shi, Mumin; Zheng, Yina; Wu, Yao; Yang, Wenyan; Wang, Tao; Wu, Qiang; Yang, Yang; Lu, Xinhui; Xia, Jianlong; Brabec, Christoph J.; Yan, He; Li, Yongfang; Min, Jie. The article conveys some information:

The field of all-polymer solar cells (all-PSCs) has experienced rapid development during the past few years, mainly driven by the design of efficient polymer acceptors (PAs). However, the polymer/polymer blend systems still lag far behind polymer/small mol. acceptor counterparts in power conversion efficiencies (PCEs). Here, we designed a near-IR PA PY2F-T and paired it with polymer donor PM6 to fabricate all-PSCs with 15.0% PCE. Afterwards, PYT as the third component was introduced into the PM6:PY2F-T host system. Because of the complementary absorption bands and finely tuned microstructures of the ternary blend, the PCE is improved up to 17.2%, with the external quantum efficiency over 80% in visible and near-IR spectral regions. Impressively, the ternary blend exhibited less energy loss, better light-soaking and photo-thermal stabilities than did the corresponding binary systems. This work promotes the development of high-performance ternary all-polymer systems and heralds a brighter future for accelerating the possible applications of all-PSCs. In addition to this study using Tris(dibenzylideneacetone)dipalladium(0), there are many other studies that have used Tris(dibenzylideneacetone)dipalladium(0)(cas: 51364-51-3Category: catalyst-ligand) was used in this study.

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.Category: catalyst-ligand 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