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Preparation and Characterization of C60/Graphene Hybrid Nanostructures
Published on: May 15, 2018
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Thiacrown Ethers Engaged C60 through Charge Transfer: Experimental and Theoretical Study
Khaled Al Khalyfeh1, Akef T Afaneh2, Ali Marashdeh2
1Department of Chemistry, Al-Hussein Bin Talal University, Ma'an 71111, Jordan.
ACS Omega
|October 12, 2020
Summary
This study explores charge transfer complexes between thiacrown ethers and fullerene using UV-Vis spectroscopy. Findings reveal key interactions influencing fullerene binding, suggesting potential for novel organic photovoltaic systems.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Organic Electronics
Background:
- Thiacrown ethers (TCEs) are versatile ligands with tunable properties.
- Fullerene (C60) is a key component in organic electronics, particularly organic photovoltaics.
- Understanding host-guest interactions is crucial for designing efficient molecular systems.
Purpose of the Study:
- To investigate the charge transfer complexes formed between thiacrown ethers (1-6) and fullerene (C60).
- To systematically analyze the impact of TCE size and heteroatom composition (N, O, S) on electronic and optical properties.
- To elucidate the binding interactions and thermodynamic stability of these complexes.
Main Methods:
- UV-Visible (UV-Vis) spectroscopy to study charge transfer.
- Systematic variation of thiacrown ether structures (size and heteroatoms).
- Density Functional Theory (DFT) calculations to confirm complex stoichiometry and interactions.
Main Results:
- UV-Vis spectroscopy confirmed charge transfer complex formation.
- Systematic structural modifications influenced HOMO/LUMO energy levels and optical energy gaps.
- Thermodynamic data and DFT calculations indicated a stable 1:1 complex stoichiometry.
- Identified synergistic donor-acceptor, π-π, and n-π interactions governing C60 affinity.
Conclusions:
- Thiacrown ethers form stable 1:1 charge transfer complexes with fullerene.
- Structural variations in thiacrown ethers significantly impact complex properties.
- The identified interactions provide a basis for designing novel receptors for C60.
- This work offers a conceptual framework for developing enzyme-mimicking organic photovoltaic systems.
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