NDLI: Microwave-assisted synthesis of a viologen-based covalent organic polymer with redox-tunable polarity for dye adsorption

Content Provider	Royal Society of Chemistry (RSC)
Author	Trabolsi, Ali Skorjanc, Tina Prakasam, Thirumurugan Das, Gobinda Olsen, John-Carl Nuryyeva, Selbi
Copyright Year	2017
Abstract	We report the efficient synthesis of a viologen-based covalent organic polymer by a microwave-assisted Menshutkin reaction. The polymer's viologen sub-units were synthesized in the 4,4′-bipyridinium dicationic state but could be reduced to radical-cationic and neutral forms. Regardless of the redox state of its viologens, the polymer was found to be thermally stable and capable of removing three dyes of differing polarities—fluorescein (FL), rhodamine B (RhB), and Nile red (NR)—from aqueous solutions. With its viologens in the dicationic state, the polymer was most efficient at removing FL, which is hydrophilic. With its viologens in the neutral state, it was most efficient at removing NR, which is hydrophobic. This strategy of using a single redox-tunable material for adsorbing multiple contaminants of different polarities represents a unique approach to water purification.
Starting Page	3594
Ending Page	3598
Page Count	5
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	7
Issue Number	6
Journal	RSC Advances
DOI	10.1039/c6ra26332a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Rhodamine Nile Viologen Menshutkin reaction Covalent bond Redox Polymer Hydrophile Hydrophobe
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Microwave-assisted synthesis of a viologen-based covalent organic polymer with redox-tunable polarity for dye adsorption