One-step bimodel grafting via a multicomponent reaction toward antifouling and antibacterial TFC RO membranes

2016 ◽  
Vol 4 (41) ◽  
pp. 15945-15960 ◽  
Author(s):  
Ying Pan ◽  
Liujia Ma ◽  
Song Lin ◽  
Yufeng Zhang ◽  
Bowen Cheng ◽  
...  
Keyword(s):  
Multicomponent Reaction ◽  
Antibacterial Properties ◽  
One Step ◽  
Tfc Membrane

A one-step bimodal grafting method was developed based on a multicomponent reaction to endow a TFC membrane with antifouling and antibacterial properties.

One-step synthesis of N,N′-substituted 4-imidazolidinones by an isocyanide-based pseudo-five-multicomponent reaction

2018 ◽  
Vol 16 (46) ◽  
pp. 8944-8949 ◽  
Author(s):  
Cecilia I. Attorresi ◽  
Evelyn L. Bonifazi ◽  
Javier A. Ramírez ◽  
Gabriel F. Gola
Keyword(s):  
Multicomponent Reaction ◽  
Primary Amine ◽  
One Step

A pseudo-five-multicomponent reaction involving an isocyanide, a primary amine, two molecules of formaldehyde and water is reported, which gives N,N′-substituted 4-imidazolidinones when trifluoroethanol is used as the solvent.

One-Step Synthesis of 1H-Imidazo[1,5-a]imidazole Scaffolds and Access to their Polyheterocycles

Synthesis ◽  
2019 ◽  
Vol 51 (21) ◽  
pp. 3973-3980 ◽  
Author(s):  
M. Loubidi ◽  
M. Lorion ◽  
A. El Hakmaoui ◽  
P. Bernard ◽  
M. Akssira ◽  
...  
Keyword(s):  
Multicomponent Reaction ◽  
Polycyclic Compounds ◽  
Wide Range ◽  
One Step

In this work, we continue our adventure in the chemistry of 5-5 tri-nitrogen bicycles. We disclose herein a one-step reaction to synthesize 1H-imidazo[1,5-a]imidazoles with different substituents introduced through the use of a wide range of aldehydes and isocyanides by using a Groebke–Blackburn–Bienaymé multicomponent reaction. The aim is to build a new library of 1H-imidazo[1,5-a]imidazole scaffolds. This bicycle was then modified to access new nitrogen-containing polycyclic compounds.

scholarly journals One-Step Reinforcement and Deacidification of Paper Documents: Application of Lewis Base—Chitosan Nanoparticle Coatings and Analytical Characterization

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1226
Author(s):  
Zhihui Jia ◽  
Chun Yang ◽  
Fangnan Zhao ◽  
Xiaolian Chao ◽  
Yuhu Li ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Chitosan Nanoparticles ◽  
Antibacterial Properties ◽  
Interaction Mechanism ◽  
Accelerated Aging ◽  
Natural Aging ◽  
Lewis Base ◽  
X Ray ◽  
Chitosan Nanoparticle ◽  
One Step

To delay acidification and deterioration during natural aging, deacidification and reinforcement of paper manuscripts have been the most important technologies to prolong the life of objects. Herein, a novel approach for the conservation of paper manuscripts is proposed using chitosan nanoparticles as Lewis base that leads to both deacidification and strengthening of paper in one-step. Chitosan nanoparticles were prepared through physical ball grinding method and characterized via scanning electron microscopy (SEM), X-ray diffraction (XRD), laser particle size analyzer (LPSA), Fourier transform infrared spectroscopy (FTIR), and atomic force microscope (AFM). To evaluate the resistance of chitosan nanoparticle coating, the mechanical properties of paper after artificial aging were evaluated using dry heat and hygrothermal accelerated aging methods. The SEM, EDX, and X-ray Photoelectron Spectroscopy (XPS) were used to analyze the interaction mechanism between chitosan and Shuxuan paper. The results show that the coated paper had superior durability with respect to pH, tensile strength, and folding endurance. There was a presence of protonated amines in the form of ammonium salts due to ionic bindings with free H+ in the acidified paper, and the remaining –NH2 could be used as a base reserve. Finally, the resulting coated papers displayed good antibacterial properties.

One-Step Synthesis and Antibacterial Properties of Polyaniline/TiO2 Nanocomposites

2012 ◽  
Vol 534 ◽  
pp. 78-81
Author(s):  
Ting Wei Hu ◽  
Shao Yun Shan ◽  
Shi Mei Yang ◽  
Li Hong Jiang ◽  
Ya Ming Wang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Bacillus Subtilis ◽  
Interfacial Polymerization ◽  
Antibacterial Property ◽  
Antibacterial Properties ◽  
Molar Ratio ◽  
Tetrabutyl Titanate ◽  
One Step ◽  
Polymerization Method

Polyaniline(PANI)/TiO2 nanocomposites are successful synthesized by one step-interfacial polymerization method. Morphologies and structures of the nanocomposites are characterized using SEM, FTIR, and XRD. The antibacterial properties of PANI/TiO2 nanocomposites on Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Bacillus megateriu and Bacillus cereus are tested. The effect of molar ratio of aniline and tetrabutyl titanate on structures and antibacterial properties are also been explored. The results show that the content of tetrabutyl titanate has a obvious influence on structure and morphologies of the nanocomposites. PANI/TiO2 nanocomposites have antibacterial properties especially on Staphylococcus aureus and Escherichia coli, which shows a best antibacterial property when the molar ratio of aniline to tetrabutyl titanate is 3:2.

The Effect of Ag Dopants on the Bioactivity and Antibacterial Properties of One-Step Synthesized Ag-Containing Mesoporous Bioactive Glasses

2016 ◽  
Vol 16 (9) ◽  
pp. 10001-10007 ◽  
Author(s):  
Yu-Jen Chou ◽  
Shih-Heng Lin ◽  
Chi-Jen Shih ◽  
Shery L. Y Chang ◽  
Shao-Ju Shih
Keyword(s):  
Antibacterial Properties ◽  
Bioactive Glasses ◽  
One Step

Construction of Cellulose Based ZnO Nanocomposite Films with Antibacterial Properties through One-Step Coagulation

2015 ◽  
Vol 7 (4) ◽  
pp. 2597-2606 ◽  
Author(s):  
Feiya Fu ◽  
Lingyan Li ◽  
Lianjie Liu ◽  
Jun Cai ◽  
Yaping Zhang ◽  
...  
Keyword(s):  
Antibacterial Properties ◽  
Nanocomposite Films ◽  
One Step

scholarly journals Antibacterial properties of TiO2–Cu composite thin films grown by a one step DLICVD process

2014 ◽  
Vol 242 ◽  
pp. 187-194 ◽  
Author(s):  
Jitti Mungkalasiri ◽  
Laurent Bedel ◽  
Fabrice Emieux ◽  
Aurelia Vettese-Di Cara ◽  
Jean Freney ◽  
...  
Keyword(s):  
Thin Films ◽  
Antibacterial Properties ◽  
Composite Thin Films ◽  
One Step

scholarly journals One-step hydrothermal method to prepare superhydrophobic cotton fabric with antibacterial properties

2021 ◽  
Vol 16 ◽  
pp. 155892502110660
Author(s):  
Cuihong Sheng ◽  
Limeng Yang ◽  
Hui Zhang ◽  
Pengfei Zhang ◽  
Guodong Shen
Keyword(s):  
Titanium Dioxide ◽  
Hydrothermal Method ◽  
Cotton Fabric ◽  
Antibacterial Properties ◽  
Tetrabutyl Titanate ◽  
Water Contact ◽  
Simple Method ◽  
Functional Textiles ◽  
One Step ◽  
Fabric Surface

Superhydrophobic antibacterial cotton fabric can be widely applied in outdoor clothing, hospital bedding, and other fields. However, the existing manufacturing methods are difficult or complicated. Herein, a facile and straightforward fabrication strategy is proposed via a one-step hydrothermal method to construct micro-nanometer hierarchical structure with low surface energy on fabric. In an appropriate amount, 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PFOTES) and tetrabutyl titanate (TBT) were mixed in a hydrothermal reactor to generate titanium dioxide. Meanwhile, the PFOTES agent was hydrolyzed and condensed, bonded with titanium dioxide, and finally grafted onto the fiber together. Morphology and elements results demonstrated that the fabric surface was covered by the TiO2 nanoparticles with superhydrophobic coating. The chemical bonds of Si-O-Ti, Ti-O-C, and Ti-O-Ti revealed the structural relationship between TiO2 with PFOTES and cotton fibers. The water contact angle of the fabric obtained can reach to 168°. The fluorinated-TiO2 cotton fabric showed high antibacterial properties in visible light against E. coli and S. aureus. This simple method of preparing superhydrophobic and antibacterial fabric exhibited great potential in the field of functional textiles such as outdoor garments and hospital-related applications.

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