Cuboctahedron-based indium–organic frameworks for gas sorption and selective cation exchange

2016 ◽  
Vol 52 (51) ◽  
pp. 7978-7981 ◽  
Author(s):  
Panpan Yu ◽  
Qipeng Li ◽  
Yue Hu ◽  
Nannan Liu ◽  
Lijie Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Methylene Blue ◽  
Supercritical Carbon Dioxide ◽  
Cation Exchange ◽  
Sorption Capacity ◽  
Activation Process ◽  
Gas Sorption ◽  
Carbon Dioxide Activation ◽  
Organic Framework ◽  
Supercritical Carbon

InOF-9is an anionic indium–organic framework, which exhibits excellent gas sorption capacity through supercritical carbon dioxide activation process and selectively encapsulates guest methylene blue cations.

scholarly journals Synthesis of Sidechain Free Hydrazone-Linked Covalent Organic Frameworks Through Supercritical Carbon Dioxide Activation

2021 ◽  
Author(s):  
Shashini D Diwakara ◽  
Gregory T McCandless ◽  
Sampath B Alahakoon ◽  
Ronald Smaldone
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Narrow Range ◽  
High Surface ◽  
Covalent Organic Frameworks ◽  
Surface Areas ◽  
Carbon Dioxide Activation ◽  
Supercritical Carbon

Supercritical carbon dioxide (scCO2) activation provides milder conditions to process covalent organic frameworks (COFs) without compromising their crystallinity and porosity. To this end, three hydrazone COFs (TFPB-DHz COF, TFPT-DHz COF, Py-DHz COF) were synthesized with a terephthaloyl dihydrazide linker (DHz) which has no substituents. To date, the synthesis of hydrazone COFs without a narrow range of alkoxy linkers has not been possible. The scCO2 activated hydrazone-linked COFs in this study were crystalline and had high surface areas (TFPB-DHz COF, TFPT-DHz COF and Py-DHz COF were 790 m²/g, 1199 m²/g, and 932 m²/g, respectively). This study shows the significance of using milder activation methods for making hydrazone-linked COF structures that were previously inaccessible.

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