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Visible light induced oxygenation of alkenes with water sensitized by silicon-porphyrins with the second most earth-abundant element

Paper ID Volume ID Publish Year Pages File Format Full-Text
26481 43954 2015 8 PDF Available
Title
Visible light induced oxygenation of alkenes with water sensitized by silicon-porphyrins with the second most earth-abundant element
Abstract

•Si(IV)-porphyrin induces the photochemical oxygenation of alkenes with water.•Water serves as both electron and oxygen atom donor.•The Si(IV) utilized is the Earth's the second most abundant element.

Silicon as the second most abundant element on Earth was effectively utilized as the central atom in the porphyrin to induce photochemical oxygenation of alkenes as the first example of photocatalytic reaction through activation of water molecule in the presence of K2PtCl6 as an electron acceptor. Oxygen atom of water was confirmed to be incorporated in the oxygenated product by the photoreaction with H218O. The excited triplet state of silicon porphyrin was revealed to be responsible for the photochemical oxygenation. The one-electron oxidized silicon porphyrin was predicted by DFT calculation to have its spin population mostly on the axially ligated hydroxyl oxygen atom. The oxyl radical character of the axial ligand could rationalize the oxygenation reaction.

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Keywords
Artificial photosynthesis; Water oxidation; Oxygenation; Silicon; Visible light; Porphyrin
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Visible light induced oxygenation of alkenes with water sensitized by silicon-porphyrins with the second most earth-abundant element
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 313, 1 December 2015, Pages 176–183
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us