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July 11, 2026Langmuir

Polymer Corona Architecture Modulates Nanoparticle–Bacteria Interactions and Photothermal Antibacterial Activity of Polydopamine Nanoparticles

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Authors

AGAnna GalangNANesha May O. AndoyRSRuby May A. Sullan

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Overview

Investigating how polymer corona and bacteria structure affect photothermal antibacterial activity of nanoparticles, suggesting new treatment strategies against antimicrobial resistance.

Key Points

  • This research aims to understand how polymer corona architecture and bacterial cell envelope properties affect interactions and antibacterial efficacy of polydopamine nanoparticles.
  • Functionalization of polydopamine nanoparticles with branched PEI of varying molecular weights.
  • Assessment of PDNP-bacteria interactions with various bacterial strains, including Escherichia coli and Staphylococcus epidermidis.
  • Evaluation of cytotoxic effects under heat stress combined with laser-induced photothermal heating.
  • PEI-functionalized PDNPs showed molecular weight-dependent interactions with bacteria.
  • Antibacterial effects were stronger against Gram-negative Escherichia coli compared to Gram-positive Staphylococcus epidermidis.
  • Heat stress enhanced the antibacterial efficacy of PDNPs, especially when combined with photothermal heating.

Cite This Study

Galang et al. (2026) studied this question.

synapsesocial.com/papers/6a51dce1c18d7f28ca4ffd67https://doi.org/10.1021/acs.langmuir.6c02108
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