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Wang Z, Wang Q, Quan L, Ren S. Reversible Ferroelectric Polarization Modulation of Chiral Molecular Ferroelectrics by Circularly Polarized Light. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2025; 12:e2414977. [PMID: 39836605 PMCID: PMC11905069 DOI: 10.1002/advs.202414977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2024] [Revised: 01/06/2025] [Indexed: 01/23/2025]
Abstract
The optical modulation of ferroelectric polarization constitutes a transformative, non-contact strategy for the precise manipulation of ferroelectric properties, heralding advancements in optically stimulated ferroelectric devices. Despite its potential, progress in this domain is constrained by material limitations and the intricate nature of the underlying mechanisms. Recent studies have achieved efficient regulation of ferroelectric polarization and thermal conductivity in chiral ferroelectric thin films through the application of left- and right-handed circularly polarized light (LCP and RCP). Differential absorption of circularly polarized light (CPL) induces nonequilibrium carrier dynamics, generating distinctive interfacial electrostatic fields that enable precise control of ultrathin ferroelectric films. For (R)-BINOL-DIPASi and (S)-BINOL-DIPASi (C26H26O2Si), polarization changes surpass 23%, exhibiting opposite response under LCP and RCP excitation. In R chiral films, remnant polarization decreases from 1.05 µC cm- 2 under LCP to 0.85 µC cm- 2 under RCP, whereas in S chiral films, polarization increases from 0.85 µC cm- 2 under LCP to 0.98 µC cm- 2 under RCP. This reversible modulation facilitates reliable switching between ON and OFF states, presenting the potential of chiral ferroelectric materials for flexible, high-speed integrated photonic sensor technologies.
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Affiliation(s)
- Zhongxuan Wang
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Qian Wang
- Department of Chemistry, Virginia Tech, Blacksburg, Blacksburg, VA, 24060, USA
| | - Lina Quan
- Department of Chemistry, Virginia Tech, Blacksburg, Blacksburg, VA, 24060, USA
- Department of Materials and Science Engineering, Virginia Tech, Blacksburg, Blacksburg, VA, 24060, USA
| | - Shenqiang Ren
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
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Huang Y, Gottfried JL, Sarkar A, Zhang G, Lin H, Ren S. Proton-controlled molecular ionic ferroelectrics. Nat Commun 2023; 14:5041. [PMID: 37598217 PMCID: PMC10439891 DOI: 10.1038/s41467-023-40825-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 08/10/2023] [Indexed: 08/21/2023] Open
Abstract
Molecular ferroelectric materials consist of organic and inorganic ions held together by hydrogen bonds, electrostatic forces, and van der Waals interactions. However, ionically tailored multifunctionality in molecular ferroelectrics has been a missing component despite of their peculiar stimuli-responsive structure and building blocks. Here we report molecular ionic ferroelectrics exhibiting the coexistence of room-temperature ionic conductivity (6.1 × 10-5 S/cm) and ferroelectricity, which triggers the ionic-coupled ferroelectric properties. Such ionic ferroelectrics with the absorbed water molecules further present the controlled tunability in polarization from 0.68 to 1.39 μC/cm2, thermal conductivity by 13% and electrical resistivity by 86% due to the proton transfer in an ionic lattice under external stimuli. These findings enlighten the development of molecular ionic ferroelectrics towards multifunctionality.
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Affiliation(s)
- Yulong Huang
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
| | - Jennifer L Gottfried
- Weapons Sciences, US Army Combat Capabilities Development Command-Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD, 21005, USA
| | - Arpita Sarkar
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Gengyi Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Haiqing Lin
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Shenqiang Ren
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
- Research and Education in Energy, Environment and Water (RENEW) Institute, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA.
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