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.

scholarly journals In vivo oral insulin delivery via covalent organic frameworks

2021 ◽  
Author(s):  
Farah Benyettou ◽  
Nawel Kaddour ◽  
Thirumurugan Prakasam ◽  
Gobinda Das ◽  
Sudhir Kumar Sharma ◽  
...  
Keyword(s):  
Oral Delivery ◽  
Insulin Delivery ◽  
Oral Insulin ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Organic Framework

We report the successful use of a gastro-resistant covalent organic framework for in vivo oral delivery of insulin.

scholarly journals Covalent organic framework based microspheres as an anode material for rechargeable sodium batteries

2018 ◽  
Vol 6 (34) ◽  
pp. 16655-16663 ◽  
Author(s):  
Bidhan Chandra Patra ◽  
Sabuj Kanti Das ◽  
Arnab Ghosh ◽  
Anish Raj K ◽  
Parikshit Moitra ◽  
...  
Keyword(s):  
Anode Material ◽  
Gas Adsorption ◽  
Optoelectronic Devices ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Sodium Batteries ◽  
Organic Framework

Covalent organic frameworks (COFs) promise several benefits as materials in terms of gas adsorption, for use in optoelectronic devices, etc.

scholarly journals Multifunctional carbon nanotubes covalently coated with imine-based covalent organic frameworks: exploring structure–property relationships through nanomechanics

Nanoscale ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 1128-1137 ◽  
Author(s):  
Alicia Moya ◽  
Mercedes Hernando-Pérez ◽  
Marta Pérez-Illana ◽  
Carmen San Martín ◽  
Julio Gómez-Herrero ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Synthesis ◽  
Covalent Organic Frameworks ◽  
Structure Property ◽  
One Pot ◽  
Covalent Organic Framework ◽  
Mwcnt Surface ◽  
Structure Property Relationships ◽  
First Time ◽  
Organic Framework

Hybridization of imine-based covalent organic framework (COF-300) on oxidized MWCNT surface have been designed and succesfully developed for the first time in one-pot chemical synthesis.

Dual luminescent covalent organic frameworks for nitro-explosive detection

2019 ◽  
Vol 7 (47) ◽  
pp. 27148-27155 ◽  
Author(s):  
Muhammad Faheem ◽  
Saba Aziz ◽  
Xiaofei Jing ◽  
Tingting Ma ◽  
Junyi Du ◽  
...  
Keyword(s):  
High Selectivity ◽  
High Sensitivity ◽  
Explosive Detection ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Nitro Explosives ◽  
Organic Framework

The assembly of two electron-rich fluorescent monomers produces a new dual luminescent covalent organic framework (DL-COF), which exhibits nitro explosives detecting ability with high sensitivity (Ksv ∼ 106 M−1, Kq ∼ 1015 M−1 s−1) and high selectivity (at ppb level).

scholarly journals Selective binding in different adsorption sites of a 2D covalent organic framework

CrystEngComm ◽  
2017 ◽  
Vol 19 (33) ◽  
pp. 4927-4932 ◽  
Author(s):  
D. Cui ◽  
J. M. MacLeod ◽  
M. Ebrahimi ◽  
F. Rosei
Keyword(s):  
Covalent Organic Frameworks ◽  
Selective Binding ◽  
Covalent Organic Framework ◽  
Adsorption Sites ◽  
Different Types ◽  
Organic Framework

Monolayer covalent organic frameworks selectively bind fullerenes and trichlorobenzene at different sites via different types of interactions.

Synthesis of conjugated covalent organic frameworks/graphene composite for supercapacitor electrodes

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27290-27294 ◽  
Author(s):  
Peiyuan Wang ◽  
Qiong Wu ◽  
Lifeng Han ◽  
Shen Wang ◽  
Shaoming Fang ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Graphene Composite ◽  
One Step ◽  
Organic Framework

A novel imine-linked covalent organic framework on graphene composite with excellent electrochemical properties was conveniently synthesized in one step.

Covalent organic frameworks as metal-free heterogeneous photocatalysts for organic transformations

2017 ◽  
Vol 5 (44) ◽  
pp. 22933-22938 ◽  
Author(s):  
Yongfeng Zhi ◽  
Ziping Li ◽  
Xiao Feng ◽  
Hong Xia ◽  
Yumin Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Organic Transformations ◽  
Metal Free ◽  
Covalent Organic Framework ◽  
Photocatalytic Performances ◽  
Organic Framework

A robust two-dimensional covalent organic framework (COF-JLU5), which exhibits excellent heterogeneous photocatalytic performances for oxidative C–H functionalizations under visible-light irradiation using O2as a green oxygen source, is reported.

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.

A π-electronic covalent organic framework catalyst: π-walls as catalytic beds for Diels–Alder reactions under ambient conditions

2015 ◽  
Vol 51 (50) ◽  
pp. 10096-10098 ◽  
Author(s):  
Yang Wu ◽  
Hong Xu ◽  
Xiong Chen ◽  
Jia Gao ◽  
Donglin Jiang
Keyword(s):  
Heterogeneous Catalysts ◽  
Diels Alder ◽  
Covalent Organic Frameworks ◽  
Ambient Conditions ◽  
Covalent Organic Framework ◽  
Organic Framework

Covalent organic frameworks were developed as heterogeneous catalysts to explore their π-walls as catalytic beds that enabled Diels–Alder reactions under ambient conditions.

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