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Strategies to Design Single-Molecule Toroics Using Triangular {Ln3} Motifs.
Kuduva R Vignesh1, Gopalan Rajaraman1
1Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
ACS Omega
|December 13, 2021
Summary
Single-molecule toroics (SMTs) exhibit unique toroidal magnetic states, offering advantages over single-molecule magnets. Research focuses on triangular lanthanide-based SMTs for potential applications in electronics.
Area of Science:
- Molecular Magnetism
- Condensed Matter Physics
- Nanotechnology
Background:
- Single-molecule toroics (SMTs) are molecules with a toroidal magnetic state.
- SMTs are insensitive to external magnetic fields but interact with charge and spin currents.
- SMTs present potential advantages over single-molecule magnets (SMMs) for various applications.
Purpose of the Study:
- To review advancements in single-molecule toroics (SMTs).
- To focus on triangular lanthanide-based SMTs, particularly dysprosium (Dy3) systems.
- To explore the influence of ligand design and structural modifications on toroidal properties.
Main Methods:
- Literature review of SMT research.
- Analysis of chemico-structural strategies for toroidal behavior.
- Summarization of reported Dy3-based SMTs and non-Dy triangular SMTs.
Main Results:
- Peripheral ligands significantly influence the toroidal nature of Dy3 SMTs.
- Linking Dy3 toroidal units with 3d ions enhances magnetic moments and leads to ferrotoroidal/antiferrotoroidal behavior.
- Recent non-Dy triangular SMTs have also been summarized.
Conclusions:
- The design of ligands and bridging species is crucial for achieving desired toroidal behavior in SMTs.
- Dy3-based SMTs and their linked structures show promising magnetic properties.
- Continued research into SMTs is driven by fundamental physics interest and potential technological applications.
