Hollow porous organic nanospheres for anchoring Pd(PPh3)4 through a co-hyper-crosslinking mediated self-assembly strategy

2020 ◽  
Vol 44 (16) ◽  
pp. 6661-6666 ◽  
Author(s):  
Ying Liu ◽  
Li Zhang ◽  
Shengguang Gao ◽  
Buyin Shi ◽  
Haitao Yu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Self Assembly ◽  
Facile Synthesis ◽  
Assembly Strategy ◽  
First Time

A facile synthesis of Pd(PPh3)4-functionalized hollow porous organic nanospheres with excellent catalytic activity is reported for the first time.

A “directed precursor self-assembly” strategy for the facile synthesis of heteropoly blues: crystal structures, formation mechanism and electron distribution

2019 ◽  
Vol 48 (38) ◽  
pp. 14347-14353 ◽  
Author(s):  
Yuchao Wang ◽  
Fengyan Li ◽  
Ning Jiang ◽  
Xizheng Liu ◽  
Lin Xu
Keyword(s):  
Crystal Structures ◽  
Formation Mechanism ◽  
Self Assembly ◽  
Electron Distribution ◽  
Facile Synthesis ◽  
Assembly Strategy ◽  
Heteropoly Blues

A “directed precursor self-assembly” strategy for the facile synthesis of heteropoly blues (HPBs) has been developed, and the formation mechanism is also discussed.

Synthesis of carbazole-based microporous polymer networks via an oxidative coupling mediated self-assembly strategy: from morphology regulation to application analysis

2019 ◽  
Vol 10 (12) ◽  
pp. 1489-1497 ◽  
Author(s):  
Yang Xu ◽  
Tianqi Wang ◽  
Buyin Shi ◽  
Shengguang Gao ◽  
Guojie Meng ◽  
...  
Keyword(s):  
Self Assembly ◽  
Oxidative Coupling ◽  
Polymer Networks ◽  
Efficient Strategy ◽  
Assembly Strategy ◽  
Microporous Polymer ◽  
Application Analysis ◽  
First Time

An efficient strategy to prepare morphology-tunable carbazole-based microporous polymer networks (C-MPNs) via an oxidative coupling mediated self-assembly strategy is reported for the first time.

Purification, organophilicity and transparent fluorescent bulk material fabrication derived from hydrophilic carbon dots

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14492-14496 ◽  
Author(s):  
Xiangyang Chen ◽  
Zhijun Zhang ◽  
Jingtai Zhao
Keyword(s):  
Hydrothermal Method ◽  
Self Assembly ◽  
Carbon Dots ◽  
High Efficiency ◽  
Bulk Material ◽  
Assembly Strategy ◽  
Oil Water ◽  
Material Fabrication ◽  
First Time

High-efficiency oil/water interfacial self-assembly strategy has been used for the first time to purify hydrophilic CDs prepared by hydrothermal method.

scholarly journals Facile synthesis of bowl-shaped nitrogen-doped carbon hollow particles templated by block copolymer “kippah vesicles” for high performance supercapacitors

2016 ◽  
Vol 7 (11) ◽  
pp. 2092-2098 ◽  
Author(s):  
Zhixing Lin ◽  
Hao Tian ◽  
Fugui Xu ◽  
Xiangwen Yang ◽  
Yiyong Mai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Block Copolymer ◽  
Self Assembly ◽  
High Performance ◽  
Facile Synthesis ◽  
Hollow Particles ◽  
Nitrogen Doped ◽  
Assembly Strategy ◽  
Volumetric Capacitance ◽  
Nitrogen Doped Carbon

This paper reports a simple self-assembly strategy towards bowl-shaped carbon-containing hollow particles for high volumetric capacitance supercapacitors, as well as an unprecedented potential application for block copolymer vesicles in energy storage.

Single Amino Acid Based Self-Assemblies of Cysteine and Methionine

2018 ◽  
Author(s):  
Nidhi Gour ◽  
Bharti Koshti ◽  
Chandra Kanth P. ◽  
Dhruvi Shah ◽  
Vivek Shinh Kshatriya ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Self Assembly ◽  
Aromatic Amino Acids ◽  
Neutral Condition ◽  
Single Amino Acid ◽  
Binding Assays ◽  
Human Neuroblastoma ◽  
Cytotoxicity Assays ◽  
First Time

We report for the very first time self-assembly of Cysteine and Methionine to discrenible strucutres under neutral condition. To get insights into the structure formation, thioflavin T and Congo red binding assays were done which revealed that aggregates may not have amyloid like characteristics. The nature of interactions which lead to such self-assemblies was purported by coincubating assemblies in urea and mercaptoethanol. Further interaction of aggregates with short amyloidogenic dipeptide diphenylalanine (FF) was assessed. While cysteine aggregates completely disrupted FF fibres, methionine albeit triggered fibrillation. The cytotoxicity assays of cysteine and methionine structures were performed on Human Neuroblastoma IMR-32 cells which suggested that aggregates are not cytotoxic in nature and thus, may not have amyloid like etiology. The results presented in the manuscript are striking, since to the best of our knowledge,this is the first report which demonstrates that even non-aromatic amino acids (cysteine and methionine) can undergo spontaneous self-assembly to form ordered aggregates.

Probing the Dynamic Self-Assembly Behaviour of Photoswitchable Wormlike Micelles in Real Time

2018 ◽  
Author(s):  
Elaine A. Kelly ◽  
Judith E. Houston ◽  
Rachel Evans
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Self Assembly ◽  
Uv Light ◽  
Wormlike Micelles ◽  
Tetraethylene Glycol ◽  
Light Illumination ◽  
First Time ◽  
Dependent Processes

Understanding the dynamic self-assembly behaviour of azobenzene photosurfactants (AzoPS) is crucial to advance their use in controlled release applications such as<i></i>drug delivery and micellar catalysis. Currently, their behaviour in the equilibrium <i>cis-</i>and <i>trans</i>-photostationary states is more widely understood than during the photoisomerisation process itself. Here, we investigate the time-dependent self-assembly of the different photoisomers of a model neutral AzoPS, <a>tetraethylene glycol mono(4′,4-octyloxy,octyl-azobenzene) </a>(C<sub>8</sub>AzoOC<sub>8</sub>E<sub>4</sub>) using small-angle neutron scattering (SANS). We show that the incorporation of <i>in-situ</i>UV-Vis absorption spectroscopy with SANS allows the scattering profile, and hence micelle shape, to be correlated with the extent of photoisomerisation in real-time. It was observed that C<sub>8</sub>AzoOC<sub>8</sub>E<sub>4</sub>could switch between wormlike micelles (<i>trans</i>native state) and fractal aggregates (under UV light), with changes in the self-assembled structure arising concurrently with changes in the absorption spectrum. Wormlike micelles could be recovered within 60 seconds of blue light illumination. To the best of our knowledge, this is the first time the degree of AzoPS photoisomerisation has been tracked <i>in</i><i>-situ</i>through combined UV-Vis absorption spectroscopy-SANS measurements. This technique could be widely used to gain mechanistic and kinetic insights into light-dependent processes that are reliant on self-assembly.

scholarly journals Interactions between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1729
Author(s):  
Patrizio Raffa
Keyword(s):  
Surface Tension ◽  
Self Assembly ◽  
Interaction Model ◽  
Industrial Applications ◽  
Molecular Organization ◽  
Different Types ◽  
Solution Rheology ◽  
Interesting Class ◽  
First Time

The study of interactions between polyelectrolytes (PE) and surfactants is of great interest for both fundamental and applied research. These mixtures can represent, for example, models of self-assembly and molecular organization in biological systems, but they are also relevant in industrial applications. Amphiphilic block polyelectrolytes represent an interesting class of PE, but their interactions with surfactants have not been extensively explored so far, most studies being restricted to non-associating PE. In this work, interactions between an anionic amphiphilic triblock polyelectrolyte and different types of surfactants bearing respectively negative, positive and no charge, are investigated via surface tension and solution rheology measurements for the first time. It is evidenced that the surfactants have different effects on viscosity and surface tension, depending on their charge type. Micellization of the surfactant is affected by the presence of the polymer in all cases; shear viscosity of polymer solutions decreases in presence of the same charge or nonionic surfactants, while the opposite charge surfactant causes precipitation. This study highlights the importance of the charge type, and the role of the associating hydrophobic block in the PE structure, on the solution behavior of the mixtures. Moreover, a possible interaction model is proposed, based on the obtained data.

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