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Titanium dioxide visible light photocatalysis: surface association enables photocatalysis with visible light irradiation.

ABSTRACT: Titanium dioxide (TiO2) is a widely employed and inexpensive photocatalyst, but its use in organic synthesis has been limited by the short-wavelength ultraviolet irradiation typically used. We have discovered that TiO2 particles efficiently mediate photocatalytic radical cation Diels-Alder cycloadditions using a simple visible light source, enabled by the formation of a visible light absorbing complex of the substrate on the semiconductor surface.

SUBMITTER: Pitre SP 

PROVIDER: S-EPMC5657382 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Titanium dioxide visible light photocatalysis: surface association enables photocatalysis with visible light irradiation.

Pitre Spencer P SP   Yoon Tehshik P TP   Scaiano Juan C JC  

Chemical communications (Cambridge, England) 20170401 31

Titanium dioxide (TiO<sub>2</sub>) is a widely employed and inexpensive photocatalyst, but its use in organic synthesis has been limited by the short-wavelength ultraviolet irradiation typically used. We have discovered that TiO<sub>2</sub> particles efficiently mediate photocatalytic radical cation Diels-Alder cycloadditions using a simple visible light source, enabled by the formation of a visible light absorbing complex of the substrate on the semiconductor surface. ...[more]

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