Visible-light-sensitive photocatalytic reaction on chromium-containing mesoporous silica: selective partial oxidation of propane with molecular oxygen

Computational tools have been used to study the photophysical and photochemical features of photosensitizers in photodynamic therapy (PDT) –a minimally invasive, less aggressive alternative for cancer treatment. PDT is mainly based by the activation of molecular oxygen through the action of a photoexcited sensitizer (photosensitizer). Temoporfin, widely known as mTHPC, is a second-generation photosensitizer, which produces the cytotoxic singlet oxygen when irradiated with visible light and hence destroys tumor cells. However, the bioavailability of the mostly hydrophobic photosensitizer, and hence its incorporation into the cells, is fundamental to achieve the desired effect on malignant tissues by PDT. In this study, we focus on the optical properties of the temoporfin chromophore in different environments –in <i>vacuo</i>, in solution, encapsulated in drug delivery agents, namely cyclodextrin, and interacting with a lipid bilayer.

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Visible-Light-Mediated Organoboron-Catalysed Metal-Free Dehydrogenation of N-Heterocycles Using Molecular Oxygen

Green Chemistry ◽

10.1039/d1gc01063h ◽

2021 ◽

Author(s):

Lanfeng Wei ◽

Yu Wei ◽

Jinli Zhang ◽

Liang Xu

Keyword(s):

Visible Light ◽

Molecular Oxygen ◽

The Other ◽

Metal Free ◽

Other Hand

The surge of photocatalytic transformation not only provides unprecedented synthetical methods, but also triggers the enthusiasm for more sustainable photocatalysts. On the other hand, oxygen is an ideal oxidant in...

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Visible-light-responsive lanthanide coordination polymers for highly efficient photocatalytic aerobic oxidation of amines and thiols

New Journal of Chemistry ◽

10.1039/d1nj02416g ◽

2021 ◽

Author(s):

Zhifen Guo ◽

Xin Liu ◽

Yan Che ◽

Hongzhu Xing ◽

Peng Chen

Keyword(s):

Visible Light ◽

Molecular Oxygen ◽

Coordination Polymers ◽

Aerobic Oxidation ◽

Synthesis And Characterization ◽

Lanthanide Coordination Polymers ◽

Highly Efficient ◽

Photocatalytic Reactions ◽

Energy Issues

Development of visible-light-induced photocatalytic reactions using molecular oxygen as terminal oxidant is intriguing in view of the current environmental and energy issues. We report herein the synthesis and characterization of...

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Visible light mediated aerobic oxidative hydroxylation of 2-oxindole-3-carboxylate esters: an alternative approach to 3-hydroxy-2-oxindoles

Heterocyclic Communications ◽

10.1515/hc-2019-0114 ◽

2020 ◽

Vol 26 (1) ◽

pp. 168-175

Author(s):

Jinge Wang ◽

Siyitemer Osman ◽

Xinjiang Lu ◽

Junyi Chen ◽

Xu-Dong Xia

Keyword(s):

Visible Light ◽

Molecular Oxygen ◽

Reaction Conditions ◽

Alternative Approach

AbstractA convenient aerobic oxidative hydroxylation of 3-substituted oxindoles under mild reaction conditions is described herein. This process was accomplished by the activation of molecular oxygen in the air in the presence of a photocatalyst under the irradiation of visible light. The desired product was delivered in up to 89% yield without the addition of base or stoichiometric oxidant.

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Visible light-induced partial oxidation of cyclohexane on WO3 loaded with Ptnanoparticles

Catalysis Science & Technology ◽

10.1039/c1cy00331c ◽

2012 ◽

Vol 2 (2) ◽

pp. 400-405 ◽

Cited By ~ 54

Author(s):

Yasuhiro Shiraishi ◽

Yoshitsune Sugano ◽

Satoshi Ichikawa ◽

Takayuki Hirai

Keyword(s):

Visible Light ◽

Partial Oxidation

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