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Related Concept Videos

Van der Waals Interactions01:24

Van der Waals Interactions

Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.Polar molecules have a partial positive charge on one end and a partial negative charge on the other end of the molecule,...
Stereoisomerism02:52

Stereoisomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...

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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
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Optically Active MXenes in Van der Waals Heterostructures.

Muhammad A K Purbayanto1, Madhurya Chandel1, Magdalena Birowska2

  • 1Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, Warsaw, 02-507, Poland.

Advanced Materials (Deerfield Beach, Fla.)
|September 16, 2023
PubMed
Summary

Vertical integration of 2D materials like MXenes in van der Waals heterostructures offers new optoelectronic possibilities. Research explores MXene-based heterostructures for advanced light-harvesting and conversion functionalities.

Keywords:
2D/2D assembliesMXenesoptical propertiesvan der Waals heterostructures

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Vertical integration of 2D materials in van der Waals (vdW) heterostructures enables interface engineering for tunable electronic and optical properties.
  • Experimental challenges hinder the fine-tuning of vdW heterostructures' functionalities.
  • Optically active MXenes, a new class of 2D materials, offer unique hydrophilicity, surface chemistry, and optical properties for optoelectronics.

Purpose of the Study:

  • To examine the fundamental basis and recent findings of vertical vdW heterostructures incorporating MXenes.
  • To explore the potential of MXene-based vdW heterostructures for novel optoelectronic applications.
  • To discuss design and synthesis approaches for advanced light-harvesting and conversion functionalities.

Main Methods:

  • Review of existing literature on vertical van der Waals heterostructures.
  • Analysis of experimental studies focusing on MXene-based heterostructures.
  • Discussion of synthesis strategies and design principles for MXene vdW heterostructures.

Main Results:

  • MXenes serve as a novel 2D platform for optoelectronics due to their optical activity and surface properties.
  • Coupling MXenes with other 2D materials in vdW heterostructures opens avenues for exploring quantum-confined nanostructures and devices.
  • MXene-based heterostructures demonstrate potential for extraordinary optical responses and unusual light conversion features.

Conclusions:

  • Vertical vdW heterostructures composed of MXenes and other 2D materials are promising for next-generation optoelectronic devices.
  • MXenes provide a unique platform for pursuing advanced light-harvesting, transition, and utilization functionalities.
  • Further research into robust designs and synthesis approaches is crucial for realizing the full potential of these materials.