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Engineering Nanobelt Structure via Sulphur and Oxygen Doping: Synthesis, Structural Characterization, and
Yandie Liu1, Shenghua Wang1, Jialin Xie2
1School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.
Chemistry, an Asian Journal
|June 26, 2024
Summary
New heteroatom nanobelts were synthesized and characterized. One nanobelt selectively binds fullerenes through π-π interactions and hydrogen bonds, demonstrating potential for molecular recognition applications.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Organic Chemistry
Background:
- Nanobelts offer unique structural and electronic properties.
- Heteroatom incorporation can tune molecular assembly and function.
- Host-guest chemistry is crucial for molecular recognition and sensing.
Purpose of the Study:
- Synthesize and structurally characterize novel heteroatom-bridged nanobelts.
- Investigate the host-guest interactions of these nanobelts with fullerenes.
- Understand the influence of heteroatoms on nanobelt structure and binding affinity.
Main Methods:
- Cyclization-followed-by-bridging synthesis.
- Nuclear Magnetic Resonance (NMR) spectroscopy.
- Matrix-Assisted Laser Desorption/Ionization-Time of Flight Mass Spectrometry (MALDI-TOF-MS).
- X-ray crystallography.
- Host-guest binding studies with C60, C70, and PC61BM.
Main Results:
- Successfully synthesized a cyclothianthrene nanobelt and a fused thianthrene-phenoxathiin nanobelt.
- Crystallography revealed distinct conformations: octagonal column for the former, oval tub for the latter.
- The fused nanobelt selectively bound C60 and C70 via π-π interactions and C-H···S hydrogen bonds.
- The fused nanobelt exhibited stronger affinity for C70 due to size complementarity and a specific 1:1 binding mode with PC61BM.
Conclusions:
- Heteroatom incorporation significantly impacts nanobelt structure and assembly.
- The fused nanobelt demonstrates adaptive host-guest binding capabilities with fullerenes.
- These findings provide insights for designing functional nanobelts for molecular recognition.
