Effect of PMMA additive on thin film morphology and charge storage in FE(II) spin-crossover complexes

Nur Aishah Aminah Mohd Amin and Suhana Mohd Said and Mohd Faiz Mohd Salleh and Amalina Muhammad Afifi and Nik Muhd Jazli Nik Ibrahim and Megat Muhammad Ikhsan Megat Hasnan and Norbani Abdullah and Muhamad Faris Akmal Mohd Rosli (2024) Effect of PMMA additive on thin film morphology and charge storage in FE(II) spin-crossover complexes. Molecular Crystals and Liquid Crystals, 769. pp. 1-22. ISSN 1542-1406

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Abstract

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.

Item Type:	Article
Keyword:	Composites, Fe(II) complexes, PMMA, Spincrossover, Thin film
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry > QD450-801 Physical and theoretical chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1-9971 Electrical engineering. Electronics. Nuclear engineering > TK7800-8360 Electronics
Department:	FACULTY > Faculty of Engineering
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	11 Aug 2025 09:49
Last Modified:	11 Aug 2025 09:49
URI:	https://eprints.ums.edu.my/id/eprint/44903

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