An Efficient Strategy toward Multichambered Carbon Nanoboxes with Multiple Spatial Confinement for Advanced Sodium–Sulfur Batteries

ACS Nano ◽  
2021 ◽  
Author(s):  
Dongjun Li ◽  
Bingbing Gong ◽  
Xiaolong Cheng ◽  
Fangxin Ling ◽  
Ligong Zhao ◽  
...  
Keyword(s):  
Spatial Confinement ◽  
Efficient Strategy ◽  
Sodium Sulfur

Suppression of Large-scaled PV Power Station Output Fluctuation using Sodium-Sulfur Battery

2010 ◽  
Vol 130 (2) ◽  
pp. 223-231 ◽  
Author(s):  
Motoki Akatsuka ◽  
Ryoichi Hara ◽  
Hiroyuki Kita ◽  
Takamitsu Ito ◽  
Yoshinobu Ueda ◽  
...  
Keyword(s):  
Power Station ◽  
Sulfur Battery ◽  
Sodium Sulfur Battery ◽  
Sodium Sulfur

A Memory-efficient Strategy for the FDTD Implementation Applied to the Photonic Crystals Problems

PIERS Online ◽  
2007 ◽  
Vol 3 (4) ◽  
pp. 374-378 ◽  
Author(s):  
Yu Liu ◽  
Ziqiang Yang ◽  
Zheng Liang ◽  
Limei Qi
Keyword(s):  
Photonic Crystals ◽  
Efficient Strategy ◽  
Memory Efficient

Cascade CuH-Catalyzed Conversion of Alkynes to Enantioenriched 1,1-Disubstituted Products

2019 ◽  
Author(s):  
De-Wei Gao ◽  
Yang Gao ◽  
Huiling Shao ◽  
Tian-Zhang Qiao ◽  
Xin Wang ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Medicinal Chemistry ◽  
Proteasome Inhibitors ◽  
Building Blocks ◽  
Unique Role ◽  
Efficient Strategy ◽  
Carbon Centers ◽  
Rapid Access ◽  
Cascade Catalysis ◽  
Privileged Scaffolds

Enantioenriched <i>α</i>-aminoboronic acids play a unique role in medicinal chemistry and have emerged as privileged pharmacophores in proteasome inhibitors. Additionally, they represent synthetically useful chiral building blocks in organic synthesis. Recently, CuH-catalyzed asymmetric alkene hydrofunctionalization has become a powerful tool to construct stereogenic carbon centers. In contrast, applying CuH cascade catalysis to achieve reductive 1,1-difunctionalization of alkynes remains an important, but largely unaddressed, synthetic challenge. Herein, we report an efficient strategy to synthesize <i>α</i>-aminoboronates <i>via </i>CuH-catalyzed hydroboration/hydroamination cascade of readily available alkynes. Notably, this transformation selectively delivers the desired 1,1-heterodifunctionalized product in favor of alternative homodifunctionalized, 1,2-heterodifunctionalized, or reductively monofunctionalized byproducts, thereby offering rapid access to these privileged scaffolds with high chemo-, regio- and enantioselectivity.<br>

Ultrastrong, Free-Standing and Large Nanofilms of Pyrenearamid

2019 ◽  
Author(s):  
Amalia Rapakousiou ◽  
Alejandro López-moreno ◽  
Belén Nieto-Ortega ◽  
M. Mar Bernal ◽  
Miguel A. Monclús ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Building Block ◽  
Aromatic Polyamide ◽  
Free Standing ◽  
Spatial Confinement ◽  
Polymeric Structure ◽  
Reduced Modulus ◽  
Organizational Arrangement ◽  
Polycyclic Aromatic ◽  
Nanoscale Building Block

We introduce poly(1,6-pyrene terephthalamide) polymer (PPyrTA) as an aromatic polyamide analogue of poly(p-phenylene terephthalamide) (PPTA), also known as Kevlar®. This work shows that the incorporation of polycyclic aromatic pyrene moieties improves drastically the mechanical properties of the polymeric structure, increasing elastic nanoindentation-determined modulus and hardness by factors of 1.9 and 4.3, respectively. Liquid deprotonated dispersions of PPyrTA nanofibers were used as nanoscale building block for producing large-surface, free-standing polymer macroscopic nanofilms. This 2D assembly leads to further significant improvements in reduced modulus and hardness (more than twice) compared to the starting polymer macroscale fibres, due to a better re-organizational arrangement of the PPyrTA nanofibers in the nanofilms, formed under 2D spatial confinement.

Thioether-Facilitated Iridium-Catalyzed Hydrosilylation of Steric 1,1-Disubstituted Olefins

2019 ◽  
Author(s):  
Shengtao Ding
Keyword(s):  
Side Chains ◽  
Feasible Method ◽  
Iridium Catalysis ◽  
Efficient Strategy ◽  
Terminal Alkenes ◽  
And Control ◽  
Sulfur Containing ◽  
Organosilicon Polymers

<p>One facile and efficient strategy for the hydrosilylation of steric 1,1-disubstituted terminal alkenes is demonstrated. Investigations on substrate scope and control experiments revealed the necessity of thioether in promoting this process under a simple iridium catalysis system. This convenient and feasible method is expected to be useful in the synthesis of sulfur-containing organosilicon polymers with different side-chains.</p><p><br></p>

scholarly journals Spatial confinement – rapid 2D F− diffusion in micro- and nanocrystalline RbSn2F5

2019 ◽  
Vol 21 (4) ◽  
pp. 1872-1883 ◽  
Author(s):  
Maria Gombotz ◽  
Sarah Lunghammer ◽  
Stefan Breuer ◽  
Ilie Hanzu ◽  
Florian Preishuber-Pflügl ◽  
...  
Keyword(s):  
Spatial Confinement

NMR and conductivity spectroscopy reveal 2D diffusion in both microcrystalline and nanocrystalline RbSn2F5.

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