BIBLIOS

Tipo
Artigos em Revista

Tipo de Documento
Artigo Completo

Título
Enantiomeric electro-oxidation of d- and l-glucose on chiral gold single crystal surfaces

Participantes na publicação
A. Martins (Author)
Virginia C Ferreira (Author)
Dep. Química e Bioquímica
Dep. Química e Bioquímica
CQB
A. Queirós (Author)
I. Aroso (Author)
F. Silva (Author)
J. Feliu (Author)

Resumo
The enantioselectivity of the gold chiral surfaces towards the electrocatalytic oxidation of D- and L-glucose in neutral phosphate buffered media is reported. Two enantiomorphic surfaces were used, Au{3 2 1}R and Au{3 2 1}S, and results obtained by cyclic voltammetry were compared with two non-chiral surfaces having the same terrace and step orientations, Au(1 1 1) and Au(2 1 1). An enantioselective effect is observed, Au{3 2 1}R exhibits a higher activity for D-glucose while Au{3 2 1}S exhibits a higher activity for L-glucose. The corresponding enantioselectivity factor was estimated to 10% for the process occurring at lower potential values and to 50% for the process at higher potential values. These results represent the first evidence that gold chiral surfaces are capable of enantiomeric discrimination.


Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DO PORTO

Suporte
Electrochemistry Communications

Identificadores da Publicação
ISSN - 1388-2481

Editora
Elsevier BV



Identificadores do Documento
URL - http://dx.doi.org/10.1016/s1388-2481(03)00182-6
DOI - https://doi.org/10.1016/s1388-2481(03)00182-6

Identificadores de Qualidade
SCOPUS Q1 (2011) - 2.14 - Electrochemistry
Web Of Science Q1 (2017) - 4.66 - ELECTROCHEMISTRY - SCIE
SCIMAGO Q1 (2016) - 1.626 - Electrochemistry

Keywords
Enantioselectivity Chiral surfaces Gold Glucose electro-oxidation

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