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Updated: Feb 13, 2026

Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
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Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers

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Mechanism-guided design of specific-activated photosensitizers for precision photodynamic therapy

Kai Wang1, Xiaoying Mao1, Wuyan Xie1

  • 1College of Biotechnology and Bioengineering, Zhejiang University of Technology Chaowang Road 18 Hangzhou 310014 China zhuq@zjut.edu.cn.

Chemical Science
|February 12, 2026
PubMed

Insights

Activatable photosensitizers (aPSs) offer a safer approach to photodynamic therapy (PDT) by remaining inactive until triggered by disease-specific signals. This enhances treatment precision and minimizes side effects for improved clinical outcomes.

Area of Science:

  • Biomedical Engineering
  • Photochemistry
  • Oncology

Background:

  • Conventional photodynamic therapy (PDT) faces limitations due to nonspecific phototoxicity from always-on photosensitizers.
  • Activatable photosensitizers (aPSs) offer a promising strategy to enhance treatment specificity and safety.

Purpose of the Study:

  • To review key design strategies for developing effective activatable photosensitizers (aPSs).
  • To highlight how quenching mechanisms and aggregation control enable stimulus-responsive aPS activation.

Main Methods:

  • Summarizing design principles for aPSs, focusing on energy/electron transfer and aggregation control.
  • Discussing representative examples of aPSs activated by disease-specific biomarkers (enzymes, glutathione, pH).

Main Results:

  • aPSs can be designed to remain inactive until encountering specific disease biomarkers.
  • Mechanism-guided activation minimizes off-target effects and enhances spatial control in PDT.

Conclusions:

  • Activatable photosensitizers represent a significant advancement for precision medicine in photodynamic therapy.
  • These smart agents enable more precise and clinically viable PDT protocols by responding to disease-specific stimuli.

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