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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
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N-Oxide S-O chalcogen bonding in conjugated materials
Geoffrey S Sinclair1, Robert C M Claridge1, Andrew J Kukor1
1Department of Chemistry, University of Waterloo Waterloo Canada derek.schipper@uwaterloo.ca.
Chemical Science
|June 24, 2021
Summary
Introducing N-oxidation for conjugated polymers offers a simple method to tune electronic properties and enhance structural rigidity. This N-oxide functionality creates strong intramolecular chalcogen bonds, improving material performance.
Area of Science:
- Materials Science
- Organic Chemistry
- Polymer Chemistry
Background:
- Non-covalent interactions, like chalcogen bonding, significantly influence conjugated polymer properties.
- Traditional functional groups for chalcogen bonding present synthetic challenges and alter electronic properties.
Purpose of the Study:
- To investigate the overlooked N-oxidation of bithiazole-containing materials.
- To systematically analyze the impact of N-oxidation on electronic and physical properties.
Main Methods:
- Synthesis of N-oxidized bithiazole derivatives.
- Spectroscopic and computational analysis of electronic properties (HOMO/LUMO, band gap).
- Investigation of intramolecular chalcogen bonding interactions.
Main Results:
- N-oxidation increases the HOMO and lowers the LUMO, affecting the electronic band gap.
- Strong intramolecular S-O chalcogen bonding rigidifies the conjugated system.
- N-oxide chalcogen bonding is stronger than previously exploited interactions.
Conclusions:
- N-oxidation is a facile strategy to modify conjugated polymer properties.
- Intramolecular N-oxide chalcogen bonding offers enhanced control over material structure and electronics.
- This approach provides a new avenue for designing advanced conjugated materials.
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