Fe-Porphyrin functionalized microporous organic nanotube networks and their application for the catalytic olefination of aldehydes and carbene insertion into N–H bonds

2017 ◽  
Vol 8 (24) ◽  
pp. 3721-3730 ◽  
Author(s):  
Minghong Zhou ◽  
Hui Zhang ◽  
Linfeng Xiong ◽  
Zidong He ◽  
Tianqi Wang ◽  
...  
Keyword(s):  
Crosslinking Reaction ◽  
Carbene Insertion ◽  
Organic Nanotubes

Fe-Porphyrin functionalized microporous organic nanotubes networks were synthesized by an in situ hyper-crosslinking reaction between bottlebrush copolymers and meso-tetraphenylporphyrin iron(iii) chloride.

In Situ Monitoring of the Seeding and Growth of Silver Metal–Organic Nanotubes by Liquid-Cell Transmission Electron Microscopy

ACS Nano ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 8735-8743 ◽  
Author(s):  
Karthikeyan Gnanasekaran ◽  
Kristina M. Vailonis ◽  
David M. Jenkins ◽  
Nathan C. Gianneschi
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
In Situ Monitoring ◽  
Transmission Electron ◽  
Cell Transmission ◽  
Metal Organic ◽  
Liquid Cell ◽  
Organic Nanotubes ◽  
Silver Metal

scholarly journals Fabrication of injectable hydrogels based on poly(l-glutamic acid) and chitosan

RSC Advances ◽  
2017 ◽  
Vol 7 (28) ◽  
pp. 17005-17019 ◽  
Author(s):  
Shifeng Yan ◽  
Taotao Wang ◽  
Xing Li ◽  
Yuhang Jian ◽  
Kunxi Zhang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Glutamic Acid ◽  
Crosslinking Reaction ◽  
Injectable Hydrogels ◽  
Oppositely Charged

The in situ forming hydrogels based on oppositely charged poly(l-glutamic acid) (PLGA) and chitosan (CS) were prepared via a Schiff base crosslinking reaction.

Enzyme-mediated in situ formation of pH-sensitive nanogels for proteins delivery

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 8032-8042 ◽  
Author(s):  
Zhipeng Zeng ◽  
Yingqi She ◽  
Zhiping Peng ◽  
Junchao Wei ◽  
Xiaohui He
Keyword(s):  
Protein Delivery ◽  
Ph Sensitive ◽  
Crosslinking Reaction ◽  
Intracellular Protein ◽  
In Situ Formation ◽  
Intracellular Protein Delivery

pH-Sensitive (PEG-b-P(LGA-g-Tyr)) nanogels were fabricated through the enzyme-mediated crosslinking reaction and used to load FITC-BSA for intracellular protein delivery.

Photoluminescent Metal-Organic Nanotubes via Hydrothermal in Situ Ligand Reactions

2009 ◽  
Vol 2009 (28) ◽  
pp. 4213-4218 ◽  
Author(s):  
Wen-Ting Liu ◽  
Yong-Cong Ou ◽  
Yu-Ling Xie ◽  
Zhuojia Lin ◽  
Ming-Liang Tong
Keyword(s):  
Metal Organic ◽  
Organic Nanotubes

An in situ rheological and SANS investigation of the crosslinking reaction of polyisoprene and dicumyl peroxide

2002 ◽  
Vol 41 (5) ◽  
pp. 475-482 ◽  
Author(s):  
Alberto Botti ◽  
Wim Pyckhout-Hintzen ◽  
Dieter Richter ◽  
Ekkehard Straube
Keyword(s):  
Crosslinking Reaction ◽  
Dicumyl Peroxide

Ruthenium-Porphyrin-Catalyzed Diastereoselective Intramolecular Alkyl Carbene Insertion into CH Bonds of Alkyl Diazomethanes Generated In Situ fromN-Tosylhydrazones

2014 ◽  
Vol 53 (51) ◽  
pp. 14175-14180 ◽  
Author(s):  
Annapureddy Rajasekar Reddy ◽  
Cong-Ying Zhou ◽  
Zhen Guo ◽  
Jinhu Wei ◽  
Chi-Ming Che
Keyword(s):  
Carbene Insertion ◽  
Ruthenium Porphyrin

Silver(i)-promoted insertion into X–H (X = Si, Sn, and Ge) bonds with N-nosylhydrazones

2017 ◽  
Vol 53 (16) ◽  
pp. 2503-2506 ◽  
Author(s):  
Zhaohong Liu ◽  
Qiangqiang Li ◽  
Yang Yang ◽  
Xihe Bi
Keyword(s):  
Diazo Compounds ◽  
Carbene Insertion

Silver(i)-promoted carbene insertion into X–H (X = Si, Sn, and Ge) bonds has been realized by using unstable diazo compounds, which are generated in situ from N-nosylhydrazones as carbene precursors.

Novel in situ crosslinking reaction of ethylene-vinyl alcohol copolymers by propylene carbonate

2006 ◽  
Vol 60 (4) ◽  
pp. 509-513 ◽  
Author(s):  
X.L. Wang ◽  
F.G. Du ◽  
Y.Z. Meng ◽  
R.K.Y. Li
Keyword(s):  
Propylene Carbonate ◽  
Vinyl Alcohol ◽  
Crosslinking Reaction ◽  
Ethylene Vinyl Alcohol ◽  
In Situ Crosslinking

scholarly journals In Situ Curing of a Polymer Film for Light-Proof Coring of Deep Rocks with Preservation of Rock Quality and Moisture

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Zhiyu Zhao ◽  
Heping Xie ◽  
Tao Liu ◽  
Yifan Wu
Keyword(s):  
Water Vapor ◽  
Polymer Film ◽  
Water Vapor Permeability ◽  
Light Transmittance ◽  
Vapor Permeability ◽  
Crosslinking Reaction ◽  
Deep Foundation ◽  
The Core ◽  
Rock Specimens

Deep in situ rock mechanic is of great significance for deep foundation research and engineering application. In order to explore the deep in situ mechanical law, it is necessary to maintain the in situ environment, which means to achieve fidelity coring. However, at present, there is a lack of method of deep rocks with quality-preserving, moisture-preserving, and light-proof to obtain deep rock specimens, making it difficult to obtain in situ scientific information of the core. In this study, we developed a novel in situ quality-preserving coring method of deep rocks based on an in situ film-forming process. In this method, a solution was covered on the core, and then a sealing polymer film was formed through crosslinking reaction. Organic montmorillonite and carbon black functional fillers were incorporated to further reduce the O2 and water vapor permeability and light transmittance of the polymer sealing film. The sealing film was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Compared to the neat silicone rubber film, the O2 and water vapor permeability and light transmittance of the sealing film were reduced by 81.2%, 84.4%, and 100%, respectively. In addition, the mechanical and thermal stability of the sealing film was excellent; it showed an elongation at a break of 98.0% and a tensile strength of 0.857 MPa. Moreover, a simulator was developed and the sealing film showed an excellent quality-preserving ability on the rock specimens. The significant improvement demonstrated that the method developed in this research may open up new opportunities for the development of the in situ quality-preserving coring method of deep rocks and construction of deep in situ rock mechanics.

scholarly journals Nanomagnetic Polymeric Absorbent Based on Alginate and Gamma-Maghemite Synthesized In Situ for Wastewater Treatment from Metallurgical Industry

2021 ◽  
Author(s):  
Ivana Lourenço de Mello Ferreira ◽  
Rodrigo Ferreira Bittencourt ◽  
Clenilson Sousa Júnior
Keyword(s):  
Heavy Metals ◽  
Adsorption Mechanism ◽  
Kinetic Studies ◽  
Metallurgical Industry ◽  
Crosslinking Reaction ◽  
Maghemite Nanoparticles ◽  
Transmission Electron ◽  
Iron And Calcium ◽  
Industry Wastewater

A nanomagnetic absorbent based on calcium alginate was produced successfully with the maghemite nanoparticles synthesized in situ, i.e., together with the polysaccharide crosslinking reaction. Physicochemical properties of the absorbent were analyzed and its ability to remove Ni(II) and Mn(II) ions from a real metallurgical industry wastewater was evaluated. Kinetic studies of the adsorption of these heavy metals were realized. To ascertain the most suitable quantity of absorbent to remove Ni(II) and Mn(II) from the wastewater, the absorbent mass was varied and adsorption kinetics was also evaluated. The competitiveness between the metals was evaluated to understand the adsorption mechanism. The samples were characterized by transmission electron microscopy, vibrating sample magnetometry, X-ray diffractometry and Mössbauer spectroscopy. The absorbent prepared, in this work, can be classified as a hydrogel. It presented predominant spherical morphology and micrometric dimension, containing atoms of iron and calcium dispersed uniformly in their internal and external surfaces. The synthesized maghemite nanoparticles presented superparamagnetic behavior. Results showed that the adsorption equilibrium time for both ions was about 60 min. The removal percentages from wastewater were 60.5% for nickel and 56.6% for manganese, using 300 mg of hydrogel. Results revealed that the adsorption mechanism is by ionic change between calcium and heavy metals.

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