REACTIONS OF P-BENZOQUINONE ON TIO2(001) SINGLE-CRYSTAL SURFACES - OLIGOMERIZATION AND POLYMERIZATION BY REDUCTIVE COUPLING Academic Article

abstract

• Reduction and coupling reactions of benzoquinone on sputter-reduced TiO 2 (001) surfaces yield benzene, biphenyl, terphenyl, and phenol as volatile products. Like the reductive coupling of monofunctional aldehydes and ketones, reductive coupling of benzoquinone requires titanium cations in oxidation states below +4; activity for this chemistry is strongly quenched by oxidation of reduced surfaces by annealing at 750 K and above. Unlike monofunctional carbonyl compounds, benzoquinone can undergo multiple coupling events, as shown by the production of terphenyl. Both TPD and XPS results suggest that substantial amounts of higher phenylene oligomers are also produced and remain on the surface even at high temperatures. Thus reductive coupling of benzoquinone may provide a route for synthesis of a surface layer of p-polyphenylene, a conductive polymer. 1994, American Chemical Society. All rights reserved.

authors

• Barteau, Mark

published proceedings

• LANGMUIR

author list (cited authors)

• IDRISS, H., & BARTEAU, M. A.

citation count

• 23

complete list of authors

• IDRISS, H||BARTEAU, MA

publication date

• October 1994

publisher

• American Chemical Society (ACS)  Publisher

published in

• Langmuir  Journal

Digital Object Identifier (DOI)

• 10.1021/la00022a050

start page

• 3693

end page

• 3700

volume

• 10

issue

• 10

URL

• http://dx.doi.org/10.1021/la00022a050