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Related Concept Videos

¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

1.8K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
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Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
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Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.0K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.0K
Bonding in Metals02:32

Bonding in Metals

47.5K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
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Strong coupling in plasmonic metal nanoparticles.

Yoon-Min Lee1, Seong-Eun Kim1, Jeong-Eun Park2

  • 1Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, Korea.

Nano Convergence
|July 20, 2023
PubMed
Summary

Colloidal metal nanoparticles enable strong light-matter coupling for advanced nanophotonics. This review covers nanoparticle plasmonic cavities and their integration with excitonic materials for applications like polariton lasing.

Keywords:
Light-matter interactionMetal nanoparticlePlasmonicsPolaritonsStrong coupling

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Quantum Technologies

Background:

  • Strong light-matter coupling is crucial for applications like artificial light harvesting and quantum information processing.
  • Plasmonic cavities using colloidal metal nanoparticles offer compact, room-temperature alternatives to photonic resonators.
  • Nanoparticle plasmonic systems provide tunable properties and facile integration with various light-emitting materials.

Purpose of the Study:

  • To review the use of colloidal metal nanoparticles as plasmonic cavities for strong light-matter coupling.
  • To highlight the advantages of nanoparticles, including synthesis, tunability, and integration.
  • To explore recent advancements in nanoparticle-based strong coupling systems.

Main Methods:

  • Focus on colloidal metal nanoparticles as plasmonic resonators.
  • Integration of nanoparticles with diverse excitonic materials (atomic emitters, quantum dots, 2D materials, perovskites).
  • Review of different nanoparticle configurations: single nanoparticles, dimers, and nanoparticle-on-a-mirror.

Main Results:

  • Demonstration of strong coupling in various nanoparticle-based systems.
  • Successful integration with a wide range of excitonic materials.
  • Room-temperature operation of ultracompact polaritonic systems.

Conclusions:

  • Colloidal metal nanoparticles are highly promising for strong light-matter coupling applications.
  • Future research directions include overcoming challenges and exploring new potentials in nanophotonics.
  • This field offers significant opportunities for advancements in artificial light harvesting, polariton lasing, and quantum information processing.