Voltage‐Modulated Untwist Deformations and Multispectral Optical Effects from Ion Intercalation into Chiral Ceramic Nanoparticles
[7]
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA, Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA, Tianjin Key Laboratory of Applied Catalysis Science and Technology School of Chemical Engineering and Technology Tianjin University Tianjin 300354 China
- Department of Chemical and Biological Engineering University of Colorado at Boulder Boulder CO 80309 USA
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA, Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA
- Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA, Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA
- Department of Physics University of Michigan Ann Arbor MI 48109 USA
- Department of Chemical and Biological Engineering University of Colorado at Boulder Boulder CO 80309 USA, Materials Science and Engineering Program University of Colorado at Boulder Boulder CO 80309 USA
- Department of Chemical Engineering University of Michigan Ann Arbor MI 48109 USA, Biointerfaces Institute University of Michigan Ann Arbor MI 48109 USA, Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA
Abstract Reconfiguration of chiral ceramic nanostructures after ion intercalation should favor specific nanoscale twists leading to strong chiroptical effects. In this work, V 2 O 3 nanoparticles are shown to have “built‐in” chiral distortions caused by binding of tartaric acid enantiomers to the nanoparticle surface. As evidenced by spectroscopy/microscopy techniques and calculations of nanoscale chirality measures, the intercalation of Zn 2+ ions into the V 2 O 3 lattice results in particle expansion, untwist deformations, and chirality reduction. Coherent deformations in the particle ensemble manifest as changes in sign and positions of circular polarization bands at ultraviolet, visible, mid‐infrared (IR), near‐IR (NIR), and IR wavelengths. The g‐ factors observed for IR and NIR spectral diapasons are ≈100–400 times higher than those for previously reported dielectric, semiconductor, and plasmonic nanoparticles. Nanocomposite films layer‐by‐layer assembled (LBL) from V 2 O 3 nanoparticles reveal cyclic‐voltage‐driven modulation of optical activity. Device prototypes for IR and NIR range problematic for liquid crystals and other organic materials are demonstrated. High optical activity, synthetic simplicity, sustainable processability, and environmental robustness of the chiral LBL nanocomposites provide a versatile platform for photonic devices. Similar reconfigurations of particle shapes are expected for multiple chiral ceramic nanostructures, leading to unique optical, electrical, and magnetic properties.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF)
- Sponsoring Organization:
- National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1962224
- Journal Information:
- Advanced Materials, Journal Name: Advanced Materials Journal Issue: 16 Vol. 35; ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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