N-alkylation briefly constructs tunable multifunctional sensor materials: Multianalyte detection and reversible
Chu-Ming Pang1,2, Xi-Ying Cao1, Ying Xiao1
1School of Chemistry, South China Normal University; Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education; Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
Iscience
|October 11, 2021
Summary
Synthesized N-alkyl-substituted polybenzimidazoles (SPBIs) offer tunable sensing capabilities for metal ions and nitroaromatic compounds. Adjusting alkylation extent allows for selective detection and adsorption, creating versatile multifunctional materials.
Area of Science:
- Materials Science
- Polymer Chemistry
- Analytical Chemistry
Background:
- Polybenzimidazoles (PBIs) are high-performance polymers with potential applications in sensing.
- Controlling polymer microstructure and functionality is crucial for developing advanced materials.
Purpose of the Study:
- To synthesize N-alkyl-substituted polybenzimidazoles (SPBIs) with tunable properties.
- To investigate the sensing and adsorption capabilities of SPBIs for metal ions and nitroaromatic compounds (NACs).
- To establish a facile synthesis approach for multifunctional polymeric materials.
Main Methods:
- Condensation and N-alkylation for SPBI synthesis.
- Morphological characterization using SEM.
- Chemical analysis using FT-IR and XPS.
- Computational studies using DFT.
- Sensing performance evaluation for metal ions and NACs.
Main Results:
- SPBIs with controllable morphologies (nano-/microspheres) were synthesized.
- SPBIs demonstrated selective recognition of metal ions (Cu2+, Fe3+) and NACs.
- SPBI-a showed high sensitivity for Cu2+ detection.
- SPBIs exhibited efficient adsorption and recyclability for Cu2+.
Conclusions:
- The alkylation extent of SPBIs dictates their microstructure and sensing performance.
- SPBIs are promising multifunctional materials for selective detection and adsorption applications.
- This work provides a new strategy for synthesizing versatile polymeric materials.
