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Chemistry

The Role of Singlet Oxygen in Photodynamic Therapy

Quick fact

Singlet oxygen, produced in photodynamic therapy, kills cancer cells by oxidizing vital biomolecules within a radius of only about 20 nanometers—roughly the width of a cell membrane—making it an incredibly precise cellular poison.

Why this is interesting

Imagine a cancer treatment that you can switch on with a flash of light—and that only harms the cells you target. How can something as inert as oxygen become a deadly assassin?

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The Role of Singlet Oxygen in Photodynamic Therapy

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