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Updated: Jan 6, 2026
Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
Published on: October 28, 2015
Defect engineering in OH-functionalized carbon nanotubes for visible-light-driven ROS-mediated anticancer therapy and
Hyungbin Park1,2, Sunyoung Hwang3, Joowon Choi4
1Department of Chemistry & Nanoscience, Ewha Womans University, Seoul 03760, Korea. hsw@ewha.ac.kr.
Engineered carbon nanotubes (CNTs) offer targeted cancer therapy by generating reactive oxygen species (ROS) under visible light. These nanomaterials also show promise in sustainable photocatalysis, demonstrating versatile applications.
Area of Science:
- Nanotechnology
- Materials Science
- Oncology
Background:
- Carbon nanotubes (CNTs) are promising for targeted cancer therapies.
- Reactive oxygen species (ROS) play a key role in cancer progression.
- Enhancing CNTs' light absorption and photocatalytic activity is crucial for therapeutic and catalytic applications.
Purpose of the Study:
- To design and synthesize novel CNT derivatives for enhanced ROS-mediated photodynamic cancer therapy.
- To investigate the effect of transition metal doping and NaBH4 treatment on CNT properties.
- To explore the dual applicability of engineered CNTs in cancer treatment and sustainable photocatalysis.
Main Methods:
- Systematic design and synthesis of five CNT derivatives (CNT-OH, Ti-doped CNT-OH, NaBH4-treated Ti-doped CNT-OH, Cr-doped CNT-OH, NaBH4-treated Cr-doped CNT-OH).
- Characterization of physicochemical properties, including visible light absorption and photocatalytic activity.
- Evaluation of cellular uptake, apoptosis, and necrosis induction in renal cancer cells under visible light.
- Assessment of photocatalytic efficiency for converting specific organic compounds.
Main Results:
- Ti-doped CNTs demonstrated efficient internalization into renal cancer cells and induced apoptosis under visible light.
- Cr-doped CNTs exhibited inherent cytotoxicity, leading to necrosis.
- NaBH4-treated Cr-doped CNT-OH showed superior photocatalytic activity for degrading furfuraldehyde, 5-hydroxymethylfurfural, and toluene.
- Transition metal doping and NaBH4 treatment effectively tuned CNT properties for improved performance.
Conclusions:
- Defect-engineered CNTs hold significant potential as multifunctional platforms for advanced cancer therapy.
- These CNTs can be utilized for controlled, targeted cancer treatment via ROS generation.
- The developed CNTs are effective in sustainable photocatalysis, offering solutions for chemical transformations.
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