Assessment of SiO₂ Nanotube Activity to Modify DL α-Tocopherol via ¹O₂ Generation Under Visible Light Irradiation.

ABSTRACT: This work investigates photoactive inorganic powders (SiO₂, IrSiO₂, and IrO₂/IrSiO₂) and their derivatives modified with metallated porphyrin, focusing on their ability to generate reactive oxygen species (ROS) under visible light exposure. The core material, SiO₂, exhibits a tubular morphology and a high density of optically active defects. Modifiers such as metallic and iridium oxide nanoparticles, along with porphyrin, are employed to enhance light absorption and the generation of singlet oxygen (¹O₂) for potential biomedical applications. The time-dependent photogeneration of singlet oxygen is monitored using a Singlet Oxygen Green Sensor (SOSG), and its reactivity is evaluated in relation to DL α-Tocopherol t

SUBMITTER: Anastasescu M 

PROVIDER: S-EPMC12300390 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature