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Related Concept Videos

Cycloaddition Reactions: MO Requirements for Photochemical Activation01:12

Cycloaddition Reactions: MO Requirements for Photochemical Activation

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Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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The Nucleosome Core Particle02:10

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Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
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The Nucleosome Core Particle01:12

The Nucleosome Core Particle

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Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
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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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Photochemical Electrocyclic Reactions: Stereochemistry01:26

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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
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Eukaryotic Transcription Activators02:42

Eukaryotic Transcription Activators

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Transcription activators are proteins that promote the transcription of genes from DNA to RNA. In most cases, these proteins contain two separate domains ‒ a domain that binds to DNA and a domain for activating transcription; however, in some cases, a single domain is responsible for both binding and activation of transcription, as seen in the glucocorticoid receptor and MyoD.
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Core-Shell Plasmonic Nanocomposites with Synergistic Photothermal and Photochemical Activity for Biomedical

Anca Roibu1, Florina Silvia Iliescu1,2,3, Ana-Maria Zamfirescu1

  • 1eBio-Hub Centre of Excellence in Bioengineering, National University of Science and Technology Politehnica Bucharest, 060042 Bucharest, Romania.

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Summary

Core-shell nanostructures offer advanced nanomedicine solutions for diagnostics and therapeutics. Their synergistic photothermal and photochemical effects show promise in cancer therapy, wound healing, and personalized medicine.

Keywords:
antimicrobialcancer therapycore–shell nanostructuresnanocompositephotocatalytic effectphotothermal effectplasmonic effectwound healing

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Core-shell nanostructures are pivotal in nanomedicine, impacting diagnostics and therapeutics.
  • These structures exhibit significant potential in photothermal therapy, sensing, drug delivery, and imaging.
  • Historical development and fundamental plasmonic core-shell nanocomposites are reviewed.

Purpose of the Study:

  • To review the synergistic photothermal and photochemical effects of core-shell nanocomposites in biomedicine.
  • To analyze core-shell construction and its applications in antimicrobial treatments, cancer therapy, wound healing, and tissue regeneration.
  • To discuss design considerations, performance optimization, and toxicity studies.

Main Methods:

  • Literature review of core-shell nanostructures and their biomedical applications.
  • Analysis of synergistic photothermal-photochemical effects.
  • Examination of design, optimization, and toxicity data.

Main Results:

  • Core-shell nanocomposites demonstrate versatile biomedical applications.
  • Synergistic photothermal-photochemical effects are key to their efficacy.
  • Design, optimization, and toxicity are crucial for clinical translation.

Conclusions:

  • Core-shell nanocomposites play a vital role in advancing nanomedicine and personalized medicine.
  • Addressing technological and legal challenges is essential for clinical translation.
  • Further research into synergistic effects will drive future innovations.