1
|
Prerna, Agarwal H, Goyal D. Photocatalytic degradation of textile dyes using phycosynthesised ZnO nanoparticles. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
2
|
Abstract
A protocol for the coupling of potassium xanthogenates with α-(trifluoromethyl)styrenes in the presence of triethyl phosphite is reported. The reaction is carried out under blue light irradiation in the presence of organic photocatalyst 3DPAFIPN. The reaction proceeds via formation of alkyl radicals from readily available xanthogenate salts via oxidative desulfurization and cleavage of the carbon–oxygen bond assisted by triethyl phosphite.
Collapse
|
3
|
Ciecholewska-Juśko D, Żywicka A, Junka A, Drozd R, Sobolewski P, Migdał P, Kowalska U, Toporkiewicz M, Fijałkowski K. Superabsorbent crosslinked bacterial cellulose biomaterials for chronic wound dressings. Carbohydr Polym 2020; 253:117247. [PMID: 33279002 DOI: 10.1016/j.carbpol.2020.117247] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/31/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022]
Abstract
In this work, we present a novel ex situ modification of bacterial cellulose (BC) polymer, that significantly improves its ability to absorb water after drying. The method involves a single inexpensive and easy-to-perform process of BC crosslinking, using citric acid along with catalysts, such as disodium phosphate, sodium bicarbonate, ammonium bicarbonate or their mixtures. In particular, the mixture of disodium phosphate and sodium bicarbonate was the most promising, yielding significantly greater water capacity (over 5 times higher as compared to the unmodified BC) and slower water release (over 6 times as compared to the unmodified BC). Further, our optimized crosslinked BC had over 1.5x higher water capacity than modern commercial dressings dedicated to highly exuding wounds, while exhibiting no cytotoxic effects against fibroblast cell line L929 in vitro. Therefore, our novel BC biomaterial may find application in super-absorbent dressings, designed for chronic wounds with imbalanced moisture level.
Collapse
Affiliation(s)
- Daria Ciecholewska-Juśko
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Anna Żywicka
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Adam Junka
- Department of Pharmaceutical Microbiology and Parasitology, Wrocław Medical University, Borowska 211A, 50-556 Wrocław, Poland.
| | - Radosław Drozd
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Peter Sobolewski
- Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Paweł Migdał
- Department of Environment, Hygiene and Animal Welfare, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 51-630 Wrocław, Poland.
| | - Urszula Kowalska
- Centre of Bioimmobilization and Innovative Packaging Materials, West Pomeranian University of Technology, Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Monika Toporkiewicz
- Laboratory of Confocal Microscopy, Łukasiewicz Research Network - PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland.
| | - Karol Fijałkowski
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| |
Collapse
|
4
|
Andotra S, Syed A, Kumar S, Kour M, Vikas, Chayawan, Pandey SK. Analysis of newly synthesized disulfides of aryldithiocarbonates and vanadium(V) and niobium(V) complexes of aryldithiocarbonates based on spectroscopic, thermogravimetric, SEM and DFT studies. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1580395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Savit Andotra
- Department of Chemistry, University of Jammu, Jammu, India
| | - Atiya Syed
- Department of Chemistry, University of Jammu, Jammu, India
| | - Sandeep Kumar
- Department of Chemistry, University of Jammu, Jammu, India
| | - Mandeep Kour
- Department of Chemistry, University of Jammu, Jammu, India
| | - Vikas
- Quantum Chemistry Group, Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Chayawan
- Quantum Chemistry Group, Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | | |
Collapse
|