Encyclopedia of Cancer

2009 Edition
| Editors: Manfred Schwab

Photochemical Reaction Type-II

Reference work entry
DOI: https://doi.org/10.1007/978-3-540-47648-1_4548

Definition

Of an activated photosensitizer after intersystem crossing to the triplet state. The photosensitizer transfers energy to triplet oxygen, which is activated to the reactive singlet state. Photochemical reactions type-I and type-II cause the production of reactive oxygen (ROS), the cytotoxic product employed in photodynamic therapy for destruction of tumor cells.

 Photodynamic Therapy

 Reactive Oxygen Species

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