Surfactant induced self-assembly to prepare a vanadium nitride/N,S co-doped carbon high-capacitance anode material

2021 ◽  
Vol 57 (79) ◽  
pp. 10246-10249
Author(s):  
Tianqi He ◽  
Qiuping Zhao ◽  
Qianghong Wu ◽  
Junlei Zhang ◽  
Fen Ran
Keyword(s):  
Anode Material ◽  
Self Assembly ◽  
Carbon Materials ◽  
Critical Role ◽  
Vanadium Nitride ◽  
Reaction Products ◽  
High Capacitance ◽  
Co Doped ◽  
Mechanism Of The Reaction

The mechanism of the reaction of C3H6N6 with NH4VO3 and the critical role of the surfactant in this reaction are investigated, and the high capacitance VN/N, S co-doped carbon materials are prepared by using the above reaction products.

scholarly journals Nanoimaging for Protein Misfolding Diseases. Critical Role of Misfolded Dimers in the Amyloid Self-Assembly

2011 ◽  
Vol 17 (S2) ◽  
pp. 170-171
Author(s):  
A Krasnoslobodtsev ◽  
B-H Kim ◽  
Y Lyubchenko
Keyword(s):  
Self Assembly ◽  
Protein Misfolding ◽  
Critical Role ◽  
Misfolding Diseases

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

scholarly journals Phosphorylation and O-GlcNAcylation of the PHF-1 Epitope of Tau Protein Induce Local Conformational Changes of the C-Terminus and Modulate Tau Self-Assembly Into Fibrillar Aggregates

2021 ◽  
Vol 14 ◽  
Author(s):  
François-Xavier Cantrelle ◽  
Anne Loyens ◽  
Xavier Trivelli ◽  
Oliver Reimann ◽  
Clément Despres ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Tau Protein ◽  
Posttranslational Modifications ◽  
Self Assembly ◽  
Critical Role ◽  
Small Peptides ◽  
C Terminus ◽  
The Impact

Phosphorylation of the neuronal microtubule-associated Tau protein plays a critical role in the aggregation process leading to the formation of insoluble intraneuronal fibrils within Alzheimer’s disease (AD) brains. In recent years, other posttranslational modifications (PTMs) have been highlighted in the regulation of Tau (dys)functions. Among these PTMs, the O-β-linked N-acetylglucosaminylation (O-GlcNAcylation) modulates Tau phosphorylation and aggregation. We here focus on the role of the PHF-1 phospho-epitope of Tau C-terminal domain that is hyperphosphorylated in AD (at pS396/pS404) and encompasses S400 as the major O-GlcNAc site of Tau while two additional O-GlcNAc sites were found in the extreme C-terminus at S412 and S413. Using high resolution NMR spectroscopy, we showed that the O-GlcNAc glycosylation reduces phosphorylation of PHF-1 epitope by GSK3β alone or after priming by CDK2/cyclin A. Furthermore, investigations of the impact of PTMs on local conformation performed in small peptides highlight the role of S404 phosphorylation in inducing helical propensity in the region downstream pS404 that is exacerbated by other phosphorylations of PHF-1 epitope at S396 and S400, or O-GlcNAcylation of S400. Finally, the role of phosphorylation and O-GlcNAcylation of PHF-1 epitope was probed in in-vitro fibrillization assays in which O-GlcNAcylation slows down the rate of fibrillar assembly while GSK3β phosphorylation stimulates aggregation counteracting the effect of glycosylation.

Critical role of minor eggcase silk component in promoting spidroin chain alignment and strong fiber formation

2021 ◽  
Vol 118 (38) ◽  
pp. e2100496118
Author(s):  
Tiantian Fan ◽  
Ruiqi Qin ◽  
Yan Zhang ◽  
Jingxia Wang ◽  
Jing-Song Fan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Spider Silk ◽  
Critical Role ◽  
Minor Component ◽  
Fiber Formation ◽  
Repetitive Domain ◽  
Chain Alignment ◽  
Main Components ◽  
Spider Silks

Natural spider silk with extraordinary mechanical properties is typically spun from more than one type of spidroin. Although the main components of various spider silks have been widely studied, little is known about the molecular role of the minor silk components in spidroin self-assembly and fiber formation. Here, we show that the minor component of spider eggcase silk, TuSp2, not only accelerates self-assembly but remarkably promotes molecular chain alignment of spidroins upon physical shearing. NMR structure of the repetitive domain of TuSp2 reveals that its dimeric structure with unique charged surface serves as a platform to recruit different domains of the main eggcase component TuSp1. Artificial fiber spun from the complex between TuSp1 and TuSp2 minispidroins exhibits considerably higher strength and Young’s modulus than its native counterpart. These results create a framework for rationally designing silk biomaterials based on distinct roles of silk components.

scholarly journals S and P Dual-Doped Carbon Nanospheres as Anode Material for High Rate Performance Sodium-Ion Batteries

2021 ◽  
Vol 11 (24) ◽  
pp. 12007
Author(s):  
Hyeon-Su Yang ◽  
Si-Wan Kim ◽  
Kwang-Ho Kim ◽  
Sung-Hwan Yoon ◽  
Min-Jae Ha ◽  
...  
Keyword(s):  
Anode Material ◽  
Carbon Materials ◽  
High Current Density ◽  
Scale Up ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Co Doped ◽  
Liquid Process ◽  
Plasma In Liquid

The heteroatom doping of carbon materials can significantly improve the electrochemical performance of sodium-ion batteries. However, conventional doping techniques involve more than two steps, making them unsuitable for scale-up. In this study, an S and P co-doped carbon material is synthesized using a simple, one-step plasma-in-liquid process. The synthesized material consists of abundant macropores, which can improve the electrochemical properties of sodium-ion batteries. When the synthesized anode material is applied to a sodium-ion half-cell, the cell exhibits a remarkable cycling life of 3000 cycles at a high current density of 10 A g−1, with a high reversible capacity over 125 mAh g−1. These results indicate that S and P co-doped carbon materials are promising candidates as anodes for sodium-ion batteries, and the plasma-in-liquid process is an effective strategy for heteroatom co-doping.

Design and synthesis of nitrogen and sulfur co-doped porous carbon via two-dimensional interlayer confinement for a high-performance anode material for lithium-ion batteries

2016 ◽  
Vol 4 (16) ◽  
pp. 5802-5809 ◽  
Author(s):  
Jie Zhang ◽  
Zhanxu Yang ◽  
Jiyicheng Qiu ◽  
Hyun-Wook Lee
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Lithium Ion ◽  
Two Dimensional ◽  
Design And Synthesis ◽  
Double Hydroxide ◽  
Co Doped

Nitrogen (N) and sulfur (S) co-doped porous carbon materials (NSPCs) have been prepared by the two-dimensional interlayer confinement effect of a layered double hydroxide (LDH).

scholarly journals Concentration-dependent self-assembly structures of an amphiphilic perylene diimide with tri(ethylene glycol) substituents at bay positions

RSC Advances ◽  
2017 ◽  
Vol 7 (42) ◽  
pp. 26074-26081 ◽  
Author(s):  
Xin Wang ◽  
Ting Zeng ◽  
Mohamed Nourrein ◽  
Bo-Han Lai ◽  
Kaiwen Shen ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Self Assembly ◽  
Critical Role ◽  
Perylene Diimide ◽  
Reaction Condition

The study provides a mild reaction condition to prepare an amphiphilic perylene diimide, and revealed the critical role of lateral H-bond in the abundant concentration-dependent self-assembly morphologies of the molecule.

scholarly journals Self-assembly of glycine on Cu(001): the effect of temperature and polarity

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4116-4123 ◽  
Author(s):  
Jing Xu ◽  
Zheshuai Lin ◽  
Sheng Meng ◽  
Jian-Tao Wang ◽  
Lifang Xu ◽  
...  
Keyword(s):  
Metal Surface ◽  
Self Assembly ◽  
Finite Temperature ◽  
Critical Role ◽  
The Self ◽  
Effect Of Temperature ◽  
Molecular Polarity

Glycine on Cu(001) is studied as an example to illustrate the critical role of finite temperature and molecular polarity in the self-assembly of biomolecules at a metal surface.

The Critical Role of Oxygen-Containing Functional Groups in the Etching Behavior of Activators to Carbon Materials

2021 ◽  
Vol 9 (4) ◽  
pp. 1646-1655
Author(s):  
Shaohua Zhang ◽  
Xiangyang Li ◽  
Jiangqi Zhou ◽  
Lijie Li ◽  
Lixia Bao ◽  
...  
Keyword(s):  
Functional Groups ◽  
Carbon Materials ◽  
Critical Role ◽  
Etching Behavior
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