1. Hydrophobicity Tuning in Isostructural Urchin-Shaped Covalent Organic Framework Nanoparticles by Pore Surface Engineering for Oil–Water SeparationGobinda Das, Tina Skorjanc, Thirumurugan Prakasam, Bikash Garai, Salma Abubakar, Christina Zalch Saad, Felipe Gandara, Renu Pasricha, Sudhir Kumar Sharma, Sabu Varghese, Ramesh Jagannathan, Mark A. Olson, Ali Trabolsi, 2022, original scientific article Keywords: Adsorption, Covalent organic frameworks, Hydrophobicity, Lipids, Materials
Published in RUNG: 26.09.2022; Views: 3031; Downloads: 0
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2. Taming the topology of calix[4]arene-based 2D-covalent organic frameworks : interpenetrated vs noninterpenetrated frameworks and their selective removal of cationic dyesBikash Garai, Dinesh Shetty, Tina Škorjanc, Felipe Gándara, Nawavi Naleem, Sabu Varghese, Sudhir Kumar Sharma, Maria Baias, Ramesh Jagannathan, Mark Anthony Olson, 2021, original scientific article Abstract: A bowl-shaped calix[4]arene with its exciting host–guest chemistry is a versatile supramolecular building block for the synthesis of distinct coordination cages or metal–organic frameworks. However, its utility in the synthesis of crystalline covalent organic frameworks (COFs) remains challenging, presumably due to its conformational flexibility. Here, we report the synthesis of a periodic 2D extended organic network of calix[4]arenes joined by a linear benzidine linker via dynamic imine bonds. By tuning the interaction among neighboring calixarene units through varying the concentration in the reaction mixture, we show the selective formation of interpenetrated (CX4-BD-1) and non-interpenetrated (CX4-BD-2) frameworks. The cone-shaped calixarene moiety in the structural backbone allows for the interweaving of two neighboring layers in CX4-BD-1, making it a unique example of interpenetrated 2D layers. Due to the high negative surface charge from calixarene units, both COFs have shown high performance in charge-selective dye removal and an exceptional selectivity for cationic dyes irrespective of their molecular size. The charge distribution of the COFs and the resulting selectivity for the cationic dyes were further investigated using computational methods.
Keywords: dyes and pigments, covalent organic frameworks, adsorption, layers, chemical structure
Published in RUNG: 16.03.2021; Views: 3475; Downloads: 0
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5. Rapid and Efficient Removal of Perfluorooctanoic Acid from Water with Fluorine-Rich Calixarene-Based Porous PolymersDinesh Shetty, Ilma Jahovic, Tina Škorjanc, Turan Selman Erkal, Liaqat Ali, Jesus Raya, Zouhair Asfari, Mark Anthony Olson, Serdal Kirmizialntin, Ozgur Yazaydin, Ali Trabolsi, 2020, original scientific article Keywords: Perfluorooctanoic acid, calixarene, adsorption, covalent polymers
Published in RUNG: 02.09.2020; Views: 3814; Downloads: 0
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6. Remarkably efficient removal of toxic bromate from drinking water with a porphyrin–viologen covalent organic frameworkTina Skorjanc, Dinesh Shetty, Felipe Gandara, Liaqat Ali, Jesus Raya, Gobinda Das, Mark Anthony Olson, Ali Trabolsi, 2020, original scientific article Keywords: bromate, covalent organic frameworks, Zincke reaction, porphyrin, water purification, viologen
Published in RUNG: 02.09.2020; Views: 4060; Downloads: 0
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