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Sheet-like 2D Manganese(IV) Complex with High Photothermal Conversion Efficiency.

Ye Xu1, Chao Li2, Xiaoyu Wu1

  • 1School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai 200444, China.

Journal of the American Chemical Society
|October 6, 2022
PubMed
Summary
This summary is machine-generated.

A novel manganese(IV) complex (Mn-HDCL) functions as an effective photothermal agent for cancer therapy. This water-soluble material targets tumors and enables precise margin identification, offering a new avenue for photothermal treatment.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Developing efficient and stable photothermal agents is crucial for advanced cancer therapies.
  • Manganese complexes offer potential due to their unique electronic and magnetic properties.
  • Existing photothermal agents often face challenges with solubility, stability, or targeted delivery.

Purpose of the Study:

  • To synthesize and characterize a novel, water-soluble mononuclear manganese(IV) complex for photothermal applications.
  • To evaluate the photothermal conversion efficiency and tumor-targeting capabilities of the synthesized complex.
  • To investigate the potential of the manganese complex for laser-triggered photothermal therapy in vitro and in vivo.

Main Methods:

  • One-pot templated synthesis of a manganese(IV) hexahydrazide clathrochelate complex (Mn-HDCL).
  • Characterization using scanning tunneling microscopy to determine structure.
  • Photothermal performance evaluation under near-infrared laser irradiation.
  • In vitro and in vivo studies for tumor targeting, magnetic resonance imaging contrast enhancement, and photothermal therapy efficacy.

Main Results:

  • A stable, water-soluble, 2D sheet-like manganese(IV) complex (Mn-HDCL) was successfully synthesized.
  • Mn-HDCL exhibited high photothermal conversion efficiency (approx. 71%) and comparable performance to single-wall carbon nanotubes.
  • The complex demonstrated passive tumor targeting, enhanced MRI contrast, and effective laser-triggered photothermal therapy in vitro and in vivo.

Conclusions:

  • Mn-HDCL is a promising, stable, and water-soluble photothermal material with significant potential for cancer therapy.
  • Its ability to target tumors and induce photothermal effects makes it a valuable candidate for photothermal sensitizers.
  • The combined photothermal and MRI properties suggest a dual-modal theranostic agent for cancer treatment.