Copper-catalyzed highly efficient ester formation from carboxylic acids/esters and formates

2014 ◽  
Vol 12 (17) ◽  
pp. 2637-2640 ◽  
Author(s):  
Jun Liu ◽  
Changdong Shao ◽  
Yanghui Zhang ◽  
Guangfa Shi ◽  
Shulei Pan
Keyword(s):  
Carboxylic Acids ◽  
High Efficiency ◽  
Highly Efficient ◽  
Ester Formation

Copper-catalyzed ester formation from carboxylic acids/esters and formates has been developed with high efficiency and broad substrate scopes.

scholarly journals A novel and highly efficient esterification process using triphenylphosphine oxide with oxalyl chloride

2018 ◽  
Vol 5 (2) ◽  
pp. 171988 ◽  
Author(s):  
Mingzhu Jia ◽  
Lixue Jiang ◽  
Fanfan Niu ◽  
Yu Zhang ◽  
Xiaoling Sun
Keyword(s):  
Nmr Spectroscopy ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
High Efficiency ◽  
Oxalyl Chloride ◽  
Triphenylphosphine Oxide ◽  
Coupling Reagents ◽  
Highly Efficient ◽  
Plausible Mechanism ◽  
Neutral Conditions

Triphenylphosphine oxide (TPPO) and oxalyl chloride ((COCl) 2 ) are used as novel and high-efficiency coupling reagents for the esterification of alcohols with carboxylic acids via the TPPO/(COCl) 2 system at room temperature for 1 h. The reaction represents the first TPPO-promoted esterification under mild and neutral conditions with excellent yields. Furthermore, we proposed a plausible mechanism with the help of 31 P NMR spectroscopy.

scholarly journals A self-boosting microwave plasma strategy tuned by air pressure for the highly efficient and controllable surface modification of carbon

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9955-9963
Author(s):  
Yanjing Liu ◽  
Jiawei He ◽  
Bing Zhang ◽  
Huacheng Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Carbon Fiber ◽  
High Efficiency ◽  
Microwave Plasma ◽  
Air Pressure ◽  
Air Plasma ◽  
Highly Efficient ◽  
Carbon Fiber Cloth

Microwave enabled air plasma was boosted by a carbon fiber cloth (CFC) and used for the high-efficiency surface modification of the CFC, yielding CFCs with tunable contents of oxygen and each O-containing group.

Unprecedentedly high efficiency for photocatalytic conversion of methane to methanol over Au–Pd/TiO2 – what is the role of each component in the system?

2021 ◽  
Author(s):  
Xiaojiao Cai ◽  
Siyuan Fang ◽  
Yun Hang Hu
Keyword(s):  
Methane Conversion ◽  
High Efficiency ◽  
Mild Conditions ◽  
Highly Efficient ◽  
System P ◽  
Conversion Of Methane

Direct and highly efficient methane conversion to methanol under mild conditions is achieved via photocatalysis over Au–Pd/TiO2.

scholarly journals A general approach to high-efficiency perovskite solar cells by any antisolvent

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Alexander D. Taylor ◽  
Qing Sun ◽  
Katelyn P. Goetz ◽  
Qingzhi An ◽  
Tim Schramm ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Microstructural Characterization ◽  
Application Rate ◽  
Perovskite Layer ◽  
Highly Efficient ◽  
Application Procedure ◽  
Wide Range

AbstractDeposition of perovskite films by antisolvent engineering is a highly common method employed in perovskite photovoltaics research. Herein, we report on a general method that allows for the fabrication of highly efficient perovskite solar cells by any antisolvent via manipulation of the antisolvent application rate. Through detailed structural, compositional, and microstructural characterization of perovskite layers fabricated by 14 different antisolvents, we identify two key factors that influence the quality of the perovskite layer: the solubility of the organic precursors in the antisolvent and its miscibility with the host solvent(s) of the perovskite precursor solution, which combine to produce rate-dependent behavior during the antisolvent application step. Leveraging this, we produce devices with power conversion efficiencies (PCEs) that exceed 21% using a wide range of antisolvents. Moreover, we demonstrate that employing the optimal antisolvent application procedure allows for highly efficient solar cells to be fabricated from a broad range of precursor stoichiometries.

High efficiency LaOCl supported Fe-Fe3C-based catalyst for hydrogenation of nitroarenes fabricated by coordination-assisted-pyrolysis

2021 ◽  
Author(s):  
Xuewei Li ◽  
Wei She ◽  
Jing Wang ◽  
Weizuo Li ◽  
Guangming Li
Keyword(s):  
High Efficiency ◽  
Metal Organic Frameworks ◽  
Efficient Catalyst ◽  
Considerable Potential ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Metal Organic ◽  
Carbon Based

Bi-metal organic frameworks (Bi-MOFs) derived carbon-based catalysts have exhibited the considerable potential for hydrogenation reactions. However, designing a suitable bi-MOF to fabricate the highly efficient catalyst is still great challenge....

Highly efficient (N-benzothiazolyl)-cyanoacetamide based co-sensitizers for high efficiency dye-sensitized solar cells

Optik ◽  
2021 ◽  
pp. 168274
Author(s):  
Safa A. Badawy ◽  
Rui Su ◽  
Ahmed A. Fadda ◽  
Ehab Abdel-Latif ◽  
Ahmed EL-Shafei ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells

scholarly journals Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

2021 ◽  
Vol 9 ◽  
Author(s):  
Wenqing Zhu ◽  
Kuangyu Ding ◽  
Chen Yi ◽  
Ruilin Chen ◽  
Bin Wei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Metal Sulfide ◽  
Molybdenum Sulfide ◽  
Hole Injection ◽  
Light Emitting ◽  
Hole Injection Layer ◽  
Highly Efficient ◽  
Organic Light

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

scholarly journals Tetra-fluorinated aromatic azide for highly efficient bioconjugation in living cells

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 23-26 ◽  
Author(s):  
Xuekang Cai ◽  
Dan Wang ◽  
Yasi Gao ◽  
Long Yi ◽  
Xing Yang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Living Cells ◽  
Highly Efficient ◽  
Aromatic Azide

A fast strain-promoted azide–alkyne cycloaddition based on tetra-fluorinated aromatic azide was developed and applied to label proteins and living cells with high efficiency.

Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters

2020 ◽  
Vol 8 (21) ◽  
pp. 7200-7210 ◽  
Author(s):  
Takahiro Kamata ◽  
Hisahiro Sasabe ◽  
Nozomi Ito ◽  
Yoshihito Sukegawa ◽  
Ayato Arai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Triplet Energy ◽  
Energy Hole ◽  
Light Emitting ◽  
Drive Voltage ◽  
Light Emitting Devices ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Organic Light ◽  
Long Lifetime

A smart high-triplet energy hole-transporter exhibits significant stability in the anion state realizing record-breaking highly efficient and long-living thermally activated delayed fluorescent (TADF) organic light-emitting devices (OLEDs).

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