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Related Concept Videos

Photosystem I01:27

Photosystem I

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Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
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Photosystem II01:22

Photosystem II

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The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
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The Z-Scheme of Electron Transport in Photosynthesis01:34

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The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
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ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
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The Photochemical Reaction Center01:29

The Photochemical Reaction Center

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Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
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π Electron Effects on Chemical Shift: Overview01:27

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An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
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Related Experiment Video

Updated: May 10, 2025

Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

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Plasmon-Driven Chemistry.

Arghya Sarkar1, MaKenna M Koble1, Renee R Frontiera1

  • 1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA;

Annual Review of Physical Chemistry
|April 21, 2025
PubMed
Summary
This summary is machine-generated.

Plasmonic nanomaterials offer efficient light-driven chemistry by generating nanoscale hotspots. Understanding energy transfer and molecular potential energy landscapes is key to improving plasmonic photocatalysis efficiency and selectivity.

Keywords:
Raman spectroscopycharge carrier transferenergy transferphotocatalysisphotochemistryplasmonics

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Area of Science:

  • Materials Science
  • Photochemistry
  • Nanotechnology

Background:

  • Plasmonic nanomaterials exhibit large optical cross sections and create nanoscale hotspots, making them effective photocatalysts.
  • They are utilized in driving key chemical reactions like H2 dissociation, CO2 reduction, and ammonia synthesis.
  • Improving energy transfer from plasmonic materials to reactants is crucial for enhancing photocatalysis.

Purpose of the Study:

  • To provide a comprehensive overview of plasmonic properties and energy partitioning in photocatalysis.
  • To highlight the significance of mapping molecular potential energy landscapes for understanding reactivity.
  • To explore advancements in spectroscopic techniques for analyzing plasmonic nanomaterial interactions.

Main Methods:

  • Review of plasmonic properties and energy transfer pathways.
  • Focus on molecular potential energy landscape mapping.
  • Discussion of advanced spectroscopic techniques (ultrafast SRRS, electron microscopy, electrochemistry).

Main Results:

  • Plasmonic nanomaterials enable efficient light-driven chemical transformations.
  • Understanding energy transfer mechanisms is vital for optimizing photocatalytic performance.
  • Advanced characterization techniques provide insights into plasmon-driven reactions.

Conclusions:

  • Further research into energy transfer and potential energy landscapes will advance plasmonic photocatalysis.
  • Innovative hybrid nanostructures show promise for future applications in plasmon-driven chemistry.
  • Controllable energy transfer is key to unlocking the full potential of plasmonic nanomaterials.