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Published on: May 20, 2019
Sulfamides and sulfamide polymers directly from sulfur dioxide
Alexander V Leontiev1, H V Rasika Dias, Dmitry M Rudkevich
1Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019-0065, USA.
Sulfur dioxide (SO2) gas enables the creation of N,N'-diarylsulfamides and polymers. These materials self-assemble into soft porous structures using hydrogen bonds.
Area of Science:
- Materials Science
- Polymer Chemistry
- Organic Synthesis
Background:
- Sulfur dioxide (SO2) is a versatile reagent in organic chemistry.
- N,N"-diarylsulfamides and their polymers are of interest for their structural and material properties.
- Self-assembly driven by hydrogen bonding is a key strategy for creating ordered materials.
Purpose of the Study:
- To demonstrate the effective use of SO2 gas in synthesizing N,N"-diarylsulfamides.
- To explore the preparation of shape-persistent sulfamide polymers.
- To investigate the self-assembly behavior of these sulfamide-based materials.
Main Methods:
- Reaction of amines with SO2 gas.
- Polymerization reactions involving sulfamide monomers.
- Characterization of synthesized compounds and polymers using spectroscopic and structural techniques.
- Analysis of self-assembly mechanisms driven by intermolecular N-H...O=S hydrogen bonds.
Main Results:
- SO2 gas was confirmed as an effective reagent for N,N"-diarylsulfamide synthesis.
- Novel shape-persistent sulfamide polymers were successfully prepared.
- The self-assembly into soft porous materials was attributed to a network of intermolecular N-H...O=S hydrogen bonds.
- The resulting materials exhibit controlled porosity and structural integrity.
Conclusions:
- SO2 gas provides an efficient route to N,N"-diarylsulfamides and related polymers.
- Intermolecular N-H...O=S hydrogen bonding is crucial for the self-assembly of these compounds into soft porous materials.
- This work expands the utility of SO2 in materials synthesis and offers a pathway to novel porous organic materials.
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