scholarly journals Simultaneous construction of two linkages for the on-surface synthesis of imine–boroxine hybrid covalent organic frameworks

2017 ◽  
Vol 8 (3) ◽  
pp. 2169-2174 ◽  
Author(s):  
Jie-Yu Yue ◽  
Yi-Ping Mo ◽  
Shu-Ying Li ◽  
Wei-Long Dong ◽  
Ting Chen ◽  
...  
Keyword(s):  
Schiff Base ◽  
Boronic Acid ◽  
Synthesis Process ◽  
Covalent Organic Frameworks ◽  
Dehydration Reaction

The orthogonality between the Schiff base reaction and the boronic acid dehydration reaction is explored during the on-surface synthesis process.

scholarly journals Constructing covalent organic frameworks in waterviadynamic covalent bonding

IUCrJ ◽  
2016 ◽  
Vol 3 (6) ◽  
pp. 402-407 ◽  
Author(s):  
Jayshri Thote ◽  
Harshitha Barike Aiyappa ◽  
Raya Rahul Kumar ◽  
Sharath Kandambeth ◽  
Bishnu P. Biswal ◽  
...  
Keyword(s):  
Schiff Base ◽  
Covalent Bonding ◽  
Porous Polymers ◽  
Porous Structures ◽  
Covalent Organic Frameworks ◽  
Synthetic Route ◽  
Dynamic Covalent Chemistry ◽  
Water Based ◽  
First Time ◽  
Reaction In Water

The formation of keto-enamine based crystalline, porous polymers in water is investigated for the first time. Facile access to the Schiff base reaction in water has been exploited to synthesize stable porous structures using the principles of Dynamic Covalent Chemistry (DCC). Most credibly, the water-based Covalent Organic Frameworks (COFs) possess chemical as well as physical properties such as crystallinity, surface area and porosity, which is comparable to their solvothermal counterparts. The formation of COFs in water is further investigated by understanding the nature of the monomers formed using hydroxy and non-hydroxy analogues of the aldehyde. This synthetic route paves a new way to synthesize COFs using a viable, greener route by utilization of the DCC principles in conjunction with the keto–enol tautomerism to synthesize useful, stable and porous COFs in water.

Preparation of a boronate-affinity monolithic column for adsorption of nucleosides

2020 ◽  
Vol 12 (46) ◽  
pp. 5635-5641
Author(s):  
Dan Liu ◽  
Lili Meng ◽  
Liping Huang ◽  
Shipeng Luo ◽  
Guohua Zhang
Keyword(s):  
Boronic Acid ◽  
Monolithic Column ◽  
Synthesis Process

The synthesis process of boronic acid–chitosan complex.

A lanthanide(iii) dodecanuclear structure with a acylhydrazone Schiff-base ligand: slow magnetic relaxation and magnetocaloric effects

CrystEngComm ◽  
2020 ◽  
Vol 22 (44) ◽  
pp. 7623-7627
Author(s):  
Wei Wang ◽  
Jing Zhang ◽  
Ji-Hai Zhao ◽  
Yuan-Chun He ◽  
Meng-Ting Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Magnetic Relaxation ◽  
Synthesis Process ◽  
Magnetic Dynamics ◽  
Slow Magnetic Relaxation ◽  
New Type

In the complex synthesis process, the design of new type structures of lanthanide clusters with high nuclearity provides an opportunity to understand the nature of magnetic dynamics.

scholarly journals Intra-molecular Interactions in Porous Covalent Organic Frameworks

2014 ◽  
Vol 70 (a1) ◽  
pp. C530-C530
Author(s):  
Rahul Banerjee
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Molecular Interactions ◽  
Chemical Stability ◽  
Intramolecular Hydrogen Bonding ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
New Strategy ◽  
The Stability ◽  
Intramolecular Hydrogen

A new strategy of intramolecular hydrogen bonding in 2D covalent organic framework as an extra stabilizing factor has been introduced, which helps to improve the crystallinity, porosity and chemical stability of the COF. Using this concept, highly stable porphyrin containing covalent organic frameworks have been synthesized using the Schiff base reaction. The stability of the COFs mainly arises due to the strong intramolecular O-H...N=C hydrogen bonding. Validation of this postulate was cross-checked by synthesizing methoxy (OCH3) substituted COF in which no hyrogen bonding exists. It was found that methoxy substituted COF have a low crystallinity, porosity and chemical stability as compared to hydrogen bonded COF.

Isomeric Routes to Schiff-Base Single-layered Covalent Organic Frameworks

Small ◽  
2014 ◽  
Vol 10 (23) ◽  
pp. 4934-4939 ◽  
Author(s):  
Xuan-He Liu ◽  
Yi-Ping Mo ◽  
Jie-Yu Yue ◽  
Qing-Na Zheng ◽  
Hui-Juan Yan ◽  
...  
Keyword(s):  
Schiff Base ◽  
Covalent Organic Frameworks

Adsorption Properties of Hydrated Cr 3+ Ions on Schiff‐base Covalent Organic Frameworks: A DFT Study

2020 ◽  
Vol 15 (7) ◽  
pp. 1140-1146 ◽  
Author(s):  
Dongli Wei ◽  
Anrui Zhang ◽  
Yuejie Ai ◽  
Xiangke Wang
Keyword(s):  
Schiff Base ◽  
Adsorption Properties ◽  
Dft Study ◽  
Covalent Organic Frameworks

The intramolecular H-bonding effect on the growth and stability of Schiff-base surface covalent organic frameworks

2017 ◽  
Vol 19 (1) ◽  
pp. 539-543 ◽  
Author(s):  
Yi-Ping Mo ◽  
Xuan-He Liu ◽  
Bing Sun ◽  
Hui-Juan Yan ◽  
Dong Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Covalent Organic Frameworks ◽  
Base Surface ◽  
Bonding Effect

The role of intramolecular H-bonding in on-surface synthesis and stability of imine based surface covalent organic frameworks is explored.

A highly fluorescent covalent organic framework as a hydrogen chloride sensor: roles of Schiff base bonding and π-stacking

2020 ◽  
Vol 8 (28) ◽  
pp. 9520-9528 ◽  
Author(s):  
Ahmed F. M. EL-Mahdy ◽  
Ming-Yi Lai ◽  
Shiao-Wei Kuo
Keyword(s):  
Schiff Base ◽  
Hydrogen Chloride ◽  
Covalent Organic Frameworks ◽  
Strong Fluorescence ◽  
Thermal Stabilities ◽  
Crystalline Structures ◽  
Covalent Organic Framework ◽  
Π Stacking ◽  
Organic Framework

In this paper we report the extremely crystalline structures, high thermal stabilities, and strong fluorescence emissions of covalent organic frameworks based on linked carbazole units.

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