Effect of PMMA additive on thin film morphology and charge storage in FE(II) spin-crossover complexes
This study explores two Fe (II) spin-crossover (SCO) complexes; mononuclear ionic [Fe (LC12) ₃] (BF4₄) ₂] (Fe-mono) and dinuclear molecular [Fe₂(CH₃COO) ₄(LC12) ₂] (Fe-dinuc), focusing on the effects of adding polymethylmethacrylate (PMMA) on the thin films properties. PMMA improved film morphology,...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Taylor & Francis
2024
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| Subjects: | |
| Online Access: | https://eprints.ums.edu.my/id/eprint/44903/1/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/44903/ https://doi.org/10.1080/15421406.2024.2434326 |
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| Summary: | This study explores two Fe (II) spin-crossover (SCO) complexes; mononuclear ionic [Fe (LC12) ₃] (BF4₄) ₂] (Fe-mono) and dinuclear molecular [Fe₂(CH₃COO) ₄(LC12) ₂] (Fe-dinuc), focusing on the effects of adding polymethylmethacrylate (PMMA) on the thin films properties. PMMA improved film morphology, with Fe-dinuc/PMMA composites showing more uniform surfaces due to better miscibility. Optical analysis revealed that both complexes undergo gradual high-spin (HS) to low-spin (LS) transitions, with PMMA reducing the optical bandgap through enhanced molecular packing. Fe-dinuc/PMMA composites showed higher capacitance, higher voltage response sensitivity (3.44 µV K⁻¹), and strong memory effects, making them suitable for thermal charge capacitors, switching, and memory devices. These findings highlight PMMA-enhanced SCO thin films for advanced electronic applications. |
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