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8-Hydroxylquinoline as a strong alternative anchoring group for porphyrin-sensitized solar cells

Hongshan He1, Ashim Gurung, Liping Si

  • 1Center for Advanced Photovoltaics, South Dakota State University, Brookings, SD 57007, USA. Hongshan.he@sdstate.edu

Chemical Communications (Cambridge, England)
|May 11, 2012
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Oxidation of Phenols to Quinones01:17

Oxidation of Phenols to Quinones

In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...