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Properties of Enantiomers and Optical Activity02:24

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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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Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
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Optical Properties of 1D Plasmonic Polymers.

Sudip Kumar Pal1, Debarun Sen2, Dorothy Bardhan2

  • 1Department of Organic Materials and Fibers Engineering, Jeonbuk National University, Jeonju-si, Republic of Korea.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|January 30, 2026
PubMed
Summary

We developed a theoretical model to understand how chain length affects plasmonic properties in gold nanostructures. This research advances nanoscale photonics and optical applications by detailing plasmonic polymer behavior.

Keywords:
Drude modelelectric field distributionelectromagnetic couplinglocalized surface plasmon resonanceplasmonic polymerspolarization

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Area of Science:

  • * Plasmonics and Nanophotonics
  • * Materials Science
  • * Theoretical Physics

Background:

  • * Linear chains of metallic nanostructures, termed plasmonic polymers, are investigated for nanoscale photonics.
  • * These structures exhibit plasmonic waveguiding, crucial for miniaturized optical applications.
  • * Understanding their optical properties requires correlating structural characteristics with polymerization concepts.

Purpose of the Study:

  • * To develop a theoretical framework for correlating chain length with plasmonic characteristics and electric field patterns in 1D gold nanostructures.
  • * To provide a generalized mathematical formulation for the optical properties of plasmonic polymers.
  • * To bridge the relationship between physical parameters and optical behavior in ordered nanostructures.

Main Methods:

  • * Theoretical formulation to correlate chain length with plasmonic properties.
  • * Investigation of 1D aggregation of size-selective gold nanostructures.
  • * Complementary use of theoretical, experimental, and numerical simulation approaches.

Main Results:

  • * A theoretical model successfully correlates chain length with plasmonic characteristics and electric field distribution.
  • * Optical properties are shown to be dependent on aggregation number, interparticle distances, and orientations.
  • * Size and geometry of individual nanostructures significantly influence optical features.

Conclusions:

  • * The study provides a foundational theoretical understanding of plasmonic polymers.
  • * Findings offer insights into directed energy transfer and electromagnetic coupling in nanostructures.
  • * Potential applications include light-trapping, optical circuitry, and sensing.