KAIST Finds Graphene Oxide Kills Bacteria, Spares Cells
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- KAIST researchers led by Prof. Sang Ouk Kim and Prof. Hyun Jung Chung published a study in Advanced Functional Materials showing graphene oxide’s selective antibacterial action.
- Graphene oxide binds to bacterial membranes via oxygen functional groups that specifically target the phospholipid POPG, which is absent in human cells.
- Human cells remain unharmed because they lack POPG, so graphene oxide does not disrupt their membranes.
- GO‑coated fibers retain antibacterial activity after multiple washes, demonstrating durability for textile applications.
- Graphene toothbrush has sold over 10 million units, proving commercial viability of the material.
- GrapheneTex was used in the Taekwondo demonstration team’s uniforms at the 2024 Paris Olympics and is slated for the 2026 Asian Games.
- The study provides molecular‑level proof of the mechanism, supporting the development of antibiotic‑free antibacterial products.
Why it matters: Manufacturers of medical textiles and consumer goods gain a proven, wash‑resistant antibacterial material that can replace chemical antibiotics, while users benefit from safer, long‑lasting protection without harming human cells, and the technology supports new wearable health applications across healthcare and sports sectors.
