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Al(2)O(3) Surface Complexation for Photocatalytic Organic Transformations.
Leow, Wan Ru; Ng, Wilson Kwok Hung; Peng, Tai; Liu, Xinfeng; Li, Bin; Shi, Wenxiong; Lum, Yanwei; Wang, Xiaotian; Lang, Xianjun; Li, Shuzhou; Mathews, Nripan; Ager, Joel W; Sum, Tze Chien; Hirao, Hajime; Chen, Xiaodong.
Affiliation
  • Leow WR; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Ng WK; School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371.
  • Peng T; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Liu X; School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371.
  • Li B; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Shi W; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Lum Y; Joint Center for Artificial Photosynthesis, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Wang X; Department of Materials Science and Engineering, University of California , Berkeley, California 94720, United States.
  • Lang X; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Li S; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Mathews N; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Ager JW; Innovative Center for Flexible Devices, School of Materials Science and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798.
  • Sum TC; Joint Center for Artificial Photosynthesis, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Hirao H; Department of Materials Science and Engineering, University of California , Berkeley, California 94720, United States.
  • Chen X; School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371.
J Am Chem Soc ; 139(1): 269-276, 2017 01 11.
Article in En | MEDLINE | ID: mdl-27966340
ABSTRACT
The use of sunlight to drive organic reactions constitutes a green and sustainable strategy for organic synthesis. Herein, we discovered that the earth-abundant aluminum oxide (Al2O3) though paradigmatically known to be an insulator could induce an immense increase in the selective photo-oxidation of different benzyl alcohols in the presence of a large variety of dyes and O2. This unique phenomenon is based on the surface complexation of benzyl alcohol (BnOH) with the Brønsted base sites on Al2O3, which reduces its oxidation potential and causes an upshift in its HOMO for electron abstraction by the dye. The surface complexation of O2 with Al2O3 also activates the adsorbed O2 for receiving electrons from the photoexcited dyes. This discovery brings forth a new understanding on utilizing surface complexation mechanisms between the reactants and earth abundant materials to effectively achieve a wider range of photoredox reactions.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2017 Type: Article
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2017 Type: Article