Sulfur-driven switching of the Ullmann coupling on Au(111)

Jonathan Rodríguez-Fernández; Søren Birthin Schmidt; Jeppe V. Lauritsen

doi:10.1039/c8cc01007b

Sulfur-driven switching of the Ullmann coupling on Au(111)

Jonathan Rodríguez-Fernández^*
, Søren Birthin Schmidt
, Jeppe V. Lauritsen

^*Corresponding author for this work

Interdisciplinary Nanoscience Center - INANO-MBG, iNANO-huset

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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Abstract

We demonstrate a method to selectively switch the Ullmann coupling reaction of 2,8-dibromodibenzothiophene on a Au(111) support. The Ullmann coupling reaction is effective already at low temperature, but the complete inhibition of the same reaction can be achieved on Au(111) pre-exposed to H₂S. The marked difference in reactivity of pretreated Au(111) is explained by the S-passivation of free Au atoms emerging from reconstruction sites. The inhibited state can be fully lifted by removing the S via hydrogen gas post-exposure.

Original language	English
Journal	Chemical Communications
Volume	54
Issue	29
Pages (from-to)	3621-3624
Number of pages	4
ISSN	1359-7345
DOIs	https://doi.org/10.1039/c8cc01007b
Publication status	Published - 19 Mar 2018

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title = "Sulfur-driven switching of the Ullmann coupling on Au(111)",

abstract = "We demonstrate a method to selectively switch the Ullmann coupling reaction of 2,8-dibromodibenzothiophene on a Au(111) support. The Ullmann coupling reaction is effective already at low temperature, but the complete inhibition of the same reaction can be achieved on Au(111) pre-exposed to H2S. The marked difference in reactivity of pretreated Au(111) is explained by the S-passivation of free Au atoms emerging from reconstruction sites. The inhibited state can be fully lifted by removing the S via hydrogen gas post-exposure.",

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T1 - Sulfur-driven switching of the Ullmann coupling on Au(111)

AU - Rodríguez-Fernández, Jonathan

AU - Schmidt, Søren Birthin

AU - Lauritsen, Jeppe V.

PY - 2018/3/19

Y1 - 2018/3/19

N2 - We demonstrate a method to selectively switch the Ullmann coupling reaction of 2,8-dibromodibenzothiophene on a Au(111) support. The Ullmann coupling reaction is effective already at low temperature, but the complete inhibition of the same reaction can be achieved on Au(111) pre-exposed to H2S. The marked difference in reactivity of pretreated Au(111) is explained by the S-passivation of free Au atoms emerging from reconstruction sites. The inhibited state can be fully lifted by removing the S via hydrogen gas post-exposure.

AB - We demonstrate a method to selectively switch the Ullmann coupling reaction of 2,8-dibromodibenzothiophene on a Au(111) support. The Ullmann coupling reaction is effective already at low temperature, but the complete inhibition of the same reaction can be achieved on Au(111) pre-exposed to H2S. The marked difference in reactivity of pretreated Au(111) is explained by the S-passivation of free Au atoms emerging from reconstruction sites. The inhibited state can be fully lifted by removing the S via hydrogen gas post-exposure.

U2 - 10.1039/c8cc01007b

DO - 10.1039/c8cc01007b

M3 - Journal article

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AN - SCOPUS:85045044002

SN - 1359-7345

VL - 54

SP - 3621

EP - 3624

JO - Chemical Communications

JF - Chemical Communications

IS - 29

ER -

Sulfur-driven switching of the Ullmann coupling on Au(111)

Abstract

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