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11.
Pollutant removal with organic macrocycle-based covalent organic polymers and frameworks
Tina Škorjanc, Dinesh Shetty, Ali Trabolsi, 2021, pregledni znanstveni članek

Opis: Air, water, and soil pollution devastate countless ecosystems and deteriorate human health. Adsorption has commonly been used as a pollutant removal technique, but ongoing materials science research is still searching for more efficient, cheaper, and scalable sorbent materials. Herein, we discuss the synthesis and pollutant-capturing abilities of covalent polymeric structures, including covalent organic polymers and covalent organic frameworks that contain organic macrocycles in the backbone of their structures. These organic macrocycles (cyclodextrin, calixarene, cucurbituril, pillararene, and porphyrin) possess cavities and functional groups that can sequester pollutants by forming supramolecular interactions. The insolubility of these materials prominently aids in their regeneration and recyclability potentials. Following a discussion on the synthetic strategies used in the polymerization of each type of macrocycle, environmental applications of these materials are presented. Here, we focus on the removal of micropollutants, charged species, metal ions, oils and organic solvents, perfluorinated substances, iodine, and volatile organic compounds.
Ključne besede: supramolecular interactions, host-guest chemistry, organic macrocycles, covalent polymers, covalent organic frameworks, environmental remediation, adsorption
Objavljeno v RUNG: 09.04.2021; Ogledov: 2080; Prenosov: 65
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12.
Taming the topology of calix[4]arene-based 2D-covalent organic frameworks : interpenetrated vs noninterpenetrated frameworks and their selective removal of cationic dyes
Bikash Garai, Dinesh Shetty, Tina Škorjanc, Felipe Gándara, Nawavi Naleem, Sabu Varghese, Sudhir Kumar Sharma, Maria Baias, Ramesh Jagannathan, Mark Anthony Olson, 2021, izvirni znanstveni članek

Opis: 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.
Ključne besede: dyes and pigments, covalent organic frameworks, adsorption, layers, chemical structure
Objavljeno v RUNG: 16.03.2021; Ogledov: 2119; Prenosov: 0
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Covalent Calix[4]arene Nanocapsules for Efficient Camptothecin Delivery
Dinesh Shetty, Tina Skorjanc, Ali Trabolsi, 2019, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: drug delivery, calixarene, nanocapsule, self-assembly, camptothecin, breast cancer
Objavljeno v RUNG: 10.09.2020; Ogledov: 2525; Prenosov: 0
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15.
Episode 4: Toxic bromate removed from drinking water : MRS Bulletin Materials News Podcast
Tina Skorjanc, Dinesh Shetty, 2020, radijski ali tv dogodek

Ključne besede: bromate, covalent organic framework, water purification
Objavljeno v RUNG: 03.09.2020; Ogledov: 2403; Prenosov: 0
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Highly efficient carcinogenic bromate removal from water by a cationic covalent organic framework
Tina Skorjanc, Dinesh Shetty, Felipe Gandara, Liaqat Ali, Ali Trabolsi, 2019, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: bromate, covalent organic frameworks, Zincke reaction, adsorption, water purification
Objavljeno v RUNG: 03.09.2020; Ogledov: 2669; Prenosov: 0
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19.
Calix[4]arene-based porous organic nanosheets
Dinesh Shetty, Tina Škorjanc, izvirni znanstveni članek

Ključne besede: calixarene, nanosheets, covalent polymer, iodine adsorption
Objavljeno v RUNG: 02.09.2020; Ogledov: 2894; Prenosov: 0
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20.
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