A triazine-based covalent organic polymer for efficient CO2 adsorption

2015 ◽  
Vol 51 (49) ◽  
pp. 10050-10053 ◽  
Author(s):  
Ruth Gomes ◽  
Piyali Bhanja ◽  
Asim Bhaumik
Keyword(s):  
Schiff Base ◽  
Surface Area ◽  
Co2 Adsorption ◽  
Condensation Reaction ◽  
Organic Polymer ◽  
Bet Surface Area ◽  
Uptake Capacity ◽  
Hexagonally Ordered

A new triazine functionalized hexagonally ordered covalent organic polymer (TRITER-1) with a high BET surface area (716 m2 g−1) has been synthesized via the Schiff-base condensation reaction between a triamine and terephthaldehyde. TRITER-1 shows an excellent CO2 uptake capacity of 58.9 wt% at 273 K and 5 bar pressure.

scholarly journals Hydrazone connected stable luminescent covalent–organic polymer for ultrafast detection of nitro-explosives

RSC Advances ◽  
2021 ◽  
Vol 11 (62) ◽  
pp. 39270-39277
Author(s):  
Muhammad Asad ◽  
Ya-Jie Wang ◽  
Shan Wang ◽  
Qing-Guo Dong ◽  
Lin-Ke Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Condensation Reaction ◽  
High Sensitivity ◽  
Organic Polymer ◽  
Nitro Explosives ◽  
Ultrafast Detection

A novel H-COP was synthesized through Schiff-base condensation reaction, which shows high sensitivity (Ksv ∼ 106 M−1) and selectivity (μM level) towards nitro-explosives.

scholarly journals Covalent triazine-based frameworks (CTFs) from triptycene and fluorene motifs for CO2 adsorption

2016 ◽  
Vol 4 (17) ◽  
pp. 6259-6263 ◽  
Author(s):  
Subarna Dey ◽  
Asamanjoy Bhunia ◽  
Dolores Esquivel ◽  
Christoph Janiak
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Co2 Adsorption ◽  
Uptake Capacity ◽  
Carbon Dioxide Uptake

Two microporous CTFs with triptycene (TPC) and fluorene (FL) have been synthesized through a mild AlCl3-catalyzed Friedel–Crafts reaction, with the highest surface area of up to 1668 m2 g−1 for non-ionothermal CTFs. CTF-TPC and CTF-FL show an excellent carbon dioxide uptake capacity of up to 4.24 mmol g−1 at 273 K and 1 bar.

scholarly journals Cyclotetrabenzil-Based Porous Organic Polymers with High Carbon Dioxide Affinity

2021 ◽  
Author(s):  
Timur Ashirov ◽  
Maymounah Alrayyani ◽  
Kyung Seob Song ◽  
Ognjen Miljanic ◽  
Ali Coskun
Keyword(s):  
Carbon Dioxide ◽  
Condensation Reaction ◽  
Building Blocks ◽  
Organic Polymer ◽  
Bet Surface Area ◽  
Chloride Salt ◽  
Organic Polymers ◽  
High Carbon ◽  
Porous Organic Polymers ◽  
High Carbon Dioxide

Porous organic polymers (POPs) incorporating macrocyclic units have been investigated in recent years in an effort to transfer macrocycles’ intrinsic host-guest properties onto the porous networks to achieve complex separations. In this regard, highly interesting building blocks are presented by the family of cyclotetrabenzoin macrocycles with rigid, well-defined, electron-deficient cavities. This macrocycle shows high affinity towards linear guest molecules such as carbon dioxide, thus offering an ideal building block for the synthesis of CO2-philic POPs. Herein, we report the synthesis of a porous organic polymer through the condensation reaction between cyclotetrabenzil with 1,2,4,5-tetraaminobenzene under ionothermal conditions using the eutectic zinc chloride/sodium chloride/potassium chloride salt mixture at 250 oC. Notably, following the condensation reaction, the macrocycle favors 3D growth rather than 2D one while retaining the cavity. The resulting polymer, named 3D-mPOP, showed a highly microporous structure with the BET surface area of 1142 m2 g−1 and a high carbon dioxide affinity with a binding enthalpy of 39 kJ mol−1. Moreover, 3D-mPOP showed very high selectivity for carbon dioxide in carbon dioxide/methane and carbon dioxide /nitrogen mixtures.

scholarly journals A Novel One-Dimensional Porphyrin-Based Covalent Organic Framework

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3361
Author(s):  
Miao Zhang ◽  
Ruijin Zheng ◽  
Ying Ma ◽  
Ruiping Chen ◽  
Xun Sun ◽  
...  
Keyword(s):  
Pore Size ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Building Block ◽  
Co2 Adsorption ◽  
Bet Surface Area ◽  
One Dimensional ◽  
Covalent Organic Framework ◽  
Co2 Adsorption Capacity ◽  
Organic Framework

A novel one-dimensional covalent organic framework (COF-K) was firstly designed and synthesized through a Schiff-based reaction from a porphyrin building block and a nonlinear right-angle building block. The COF-K exhibited high BET surface area and narrow pore size of 1.25 nm and gave a CO2 adsorption capacity of 89 mg g−1 at 273K and 1bar.

scholarly journals Metal Complexes of Tridentate Schiff Base: Synthesis, Characterization, Biological Activity and Molecular Docking Studies with COVID-19 Protein Receptor

2021 ◽  
Author(s):  
mohamed m Omar ◽  
Walaa H. Mahmoud ◽  
Yasmin mamdoh hussien Ahmed ◽  
Gehad G. Mohamed
Keyword(s):  
Schiff Base ◽  
Molecular Docking ◽  
Metal Complexes ◽  
Surface Area ◽  
Schiff Base Ligand ◽  
Antiviral Drug ◽  
Bet Surface Area ◽  
Structural Protein ◽  
Tridentate Schiff Base

Abstract Mononuclear chelates of Cr(III), Mn(II), Fe(III), Ni(II), Cu(II), Zn(II) and Cd(II) resulting from new tridentate Schiff base ligand, 4-((1-(5-acetyl-2,4-dihydroxyphenyl)ethylidene)amino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one, were synthesized and characterized via various spectroscopic methods. Metal to ligand ratio was found to be 1:1, which was revealed via elemental analysis. IR has sharp out that the coordination of the ligand towards the metal ions was carried out via NOO atoms. UV-Vis, 1HNMR spectral data, molar conductance measurements, BET surface area, melting points and theoretically through density function theory were used such as characterizing techniques in supporting of further interpretation of the complexes structures. The complexes were octahedral except Cu(II) and Ni(II) complexes were tetrahedral as suggested through the magnetic moment measurement. The complexes were found to have surface area, pore volume and particle radius 23–176 m2 g− 1, 0.02–0.33 cc/g and 8.71–4.32 nm, respectively, as pointed out from BET measurement. Schiff base ligand and its metal complexes were tested in vitro to estimate their bactericidal activity opposed to Gram-negative and Gram-positive bacteria and antifungal organisms. In the recent incident of a novel coronavirus (SARS-CoV-2) spreads, antiviral drug detection is of most importance. MOE 2008 was used headed for screen potential drugs with molecular docking by the structural protein and non-structural protein sites of new coronavirus and the study was constructed to molecular docking without validation through MD simulations. Interactions with the main protease may play a key role in fighting against viruses.

Synthesis, Characterization and Biological Activity of Nitrogen­ Oxygen-Sulfur (NOS) Transition Metal Complexes Derived from Novel S-2,4-dichlorobenzyldithiocarbazate with 5-fluoroisatin

2010 ◽  
Vol 7 (2) ◽  
pp. 67
Author(s):  
Mohd Abdul Fatah Abdul Manan ◽  
Hadariah Bahron ◽  
Karimah Kassim ◽  
Mohd Asrul Hafaz Mohamad ◽  
Syed Nazmi Sayed Mohamad
Keyword(s):  
Bacillus Subtilis ◽  
Schiff Base ◽  
Metal Complexes ◽  
Condensation Reaction ◽  
Schiff Base Complex ◽  
Inhibition Zone ◽  
Azomethine Nitrogen ◽  
Strong Activity ◽  
Chelating Ligand ◽  
Physico Chemical

A novel Schiff base containing nitrogen-oxygen-sulfur (NOS) donor atoms formed from the condensation reaction of S-2,4-dichlorobenzyldithiocarbazate (S-2,4BDTC) with 5-fluroisatin has been synthesized. Complexes of cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) with this Schiff base have been prepared and characterized using elemental analysis and various physico-chemical techniques. In the cobalt(II) and nickel(II) complexes the Schiff base behaves as a uninegatively charged tridentate nitrogen-oxygen-sulfur (NOS) chelating ligand, bonding through the azomethine nitrogen, thiolate sulfur and carbonylic oxygen of the isatin moiety. However, in the copper(II), zinc(II) and cadmium(II) complexes the Schiff base behaves as a nitrogen-sulfur (NS) bidentate chelating ligand, bonding through the azomethine nitrogen and thiolate sulfur. The Schiff base and the metal complexes were evaluated with respect to antimicrobial activity, which was performed in relation to two selected pathogenic microbials (Bacillus subtilis and Pseudomonas aeruginosa). It was observed that only the zinc Schiff base complex exhibited strong activity against the Bacillus subtilis bacteria with an inhibition zone of 25 mm. 

Synthesis, Characterization and Biological Activity of NitrogenOxygen-Sulfur (NOS) Transition Metal Complexes Derived from Novel S-2,4-dichlorobenzyldithiocarbazate with 5-fluoroisatin

2010 ◽  
Vol 7 (2) ◽  
pp. 67
Author(s):  
Mohd Abdul Fatah Abdul Manan ◽  
Hadariah Bahron ◽  
Karimah Kassim ◽  
Mohd Asrul Hafiz Muhamad ◽  
Syed Nazmi Sayed Mohamad
Keyword(s):  
Bacillus Subtilis ◽  
Schiff Base ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Condensation Reaction ◽  
Inhibition Zone ◽  
Azomethine Nitrogen ◽  
Strong Activity ◽  
Chelating Ligand ◽  
Physico Chemical

A novel Schiff base containing nitrogen-oxygen-sulfur (NOS) donor atoms formed from the condensation reaction of S-2,4- dichlorobenzyldithiocarbazate (S-2.4BDTC) with 5-fluroisatin has been synthesized. Complexes of cobalt(ll), nickel(ll), copper(ll), zinc(ll) and cadmium(ll) with this Schiff base have been prepared and characterized using elemental analysis and various physico-chemical techniques. In the cobalt(ll) and nickel(II) complexes the SchifJbase behaves as a uninegatively charged tridentate nitrogen-oxygen-sulfur (NOS) chelating ligand, bonding through the azomethine nitrogen, thiolate sulfur and carbonylic oxygen of the isatin moiety. However. in the copper(ll), zinc(II) and cadmium(II) complexes the Schiff base behaves as a nitrogen-sulfur (NS) bidentate chelating ligand, bonding through the azomethine nitrogen and thiolate sulfur. The Schiff base and the metal complexes were evaluated with respect to antimicrobial activity, which was performed in reallion to two selected pathogenic microbials (Bacillus subtilis and Pseudomonas aeruginosa). It was observed that only the zinc Schiffbase complex exhibited strong activity against the Bacillus subtilis bacteria with an inhibition zone of25 mm.

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