Journal
LANGMUIR
Volume 34, Issue 38, Pages 11264-11271Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.8b01584
Keywords
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Funding
- CNRS, Paris Diderot University [ANR 11 LABX 086, ANR 11 IDEX 05 02]
- ANR (Agence Nationale de la Recherche) [ANR 11 LABX 086, ANR 11 IDEX 05 02]
- CGI (Commissariat a l'Investissement d'Avenir) [ANR 11 LABX 086, ANR 11 IDEX 05 02]
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The surface of gold can be modified with alkyl groups through a radical crossover reaction involving alkyliodides or bromides in the presence of a sterically hindered diazonium salt. In this paper, we characterize the Au-C(alkyl) bond by surface-enhanced Raman spectroscopy (SERS); the corresponding peak appears at 387 cm(-1) close to the value obtained by theoretical modeling. The Au-C(alkyl) bond energy is also calculated, it reaches -36.9 kcal mol(-1) similar to that of an Au-S-alkyl bond but also of an Au-C(aryl) bond. In agreement with the similar energies of Au-C(alkyl) and Au-S-(alkyl), we demonstrate experimentally that these groups can be exchanged on the surface of gold.
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