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1.
Biological applications of porous polymers and covalent organic frameworks
Tina Škorjanc, 2023, invited lecture at foreign university

Abstract: Porous organic polymers (POPs) and covalent organic frameworks (COFs) have gained significant attention in the scientific community for a wide array of applications because of their attractive physical and chemical properties. Porosity of these materials provides ample surface area for interaction with targets, while crystallinity allows for highly specific structural tuning. In this seminar, I will present two strategies of utilizing these features of newly prepared materials in biosensing. Firstly, a cationic POP was synthesized, deposited onto interdigitated electrode arrays via a nontraditional electrophoresis technique, and utilized for electrochemical sensing of bacterial cells. As the principle of detection relied on electrostatic interactions between the cationic POP and the anionic bacterial surface, the sensor operated for both Gram-positive and Gram-negative bacteria. Secondly, a small-molecule nitroimidazole target for hypoxia, a low oxygen environment present in tumors, was post-synthetically conjugated to the pores of a fluorescent COF. This material served as a useful hypoxia imaging agent in cancerous cells. The seminar will conclude with some future perspectives on POPs and COFs in biological applications followed by Q & A.
Keywords: Porous organic polymers, covalent organic frameworks, biosensors, hypoxia
Published in RUNG: 13.07.2023; Views: 473; Downloads: 0
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Pollutant removal with organic macrocycle-based covalent organic polymers and frameworks
Tina Škorjanc, Dinesh Shetty, Ali Trabolsi, 2021, review article

Abstract: 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.
Keywords: supramolecular interactions, host-guest chemistry, organic macrocycles, covalent polymers, covalent organic frameworks, environmental remediation, adsorption
Published in RUNG: 09.04.2021; Views: 1807; Downloads: 63
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Introduction of a Redox-Responsive Switch into calix[4]arene-based Covalent Organic Nanosheets for Environmental Applications
Tina Skorjanc, 2018, published scientific conference contribution abstract

Keywords: redox chemistry, viologen, covalent organic polymers, calixarene, dye adsorption, iodine adsorption
Published in RUNG: 11.09.2020; Views: 2164; Downloads: 0
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Covalent organic frameworks for biomedical and environmental applications
Tina Skorjanc, invited lecture at foreign university

Keywords: pollutant removal, covalent organic polymers, drug delivery, imaging
Published in RUNG: 03.09.2020; Views: 2251; Downloads: 0
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7.
Viologen-based conjugated covalent organic networks via Zincke reaction
Gobinda Das, Tina Škorjanc, original scientific article

Keywords: Zincke reaction, viologen, covalent organic frameworks, covalent organic polymers
Published in RUNG: 02.09.2020; Views: 2100; Downloads: 0
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