TY - JOUR
T1 - Assembly of surface-confined homochiral helicates
T2 - Chiral discrimination of DOPA and unidirectional charge transfer
AU - Kaminker, Revital
AU - De Hatten, Xavier
AU - Lahav, Michal
AU - Lupo, Fabio
AU - Gulino, Antonino
AU - Evmenenko, Guennadi
AU - Dutta, Pulak
AU - Browne, Colm
AU - Nitschke, Jonathan R.
AU - Van Der Boom, Milko E.
PY - 2013/11/13
Y1 - 2013/11/13
N2 - Surface-confined double-helical polymers are generated by dynamic covalent assembly with preservation of chirality, metal coordination environment, and oxidation state of the precursor complexes. This one-step procedure involves both in solution and solution-to-surface assembly and resulted in chiral interfaces where pairs of ligands are wrapped around arrays of metal ions. In-plane XRD experiments revealed the formation of a highly ordered structure along the substrate surface. The chirality of the surfaces is expressed by the selective recognition of 3,4-dihydroxyphenylalanine (DOPA). The CD measurements show a response of the Δ-polymer-modified quartz substrates toward d-DOPA, whereas no change was observed after treatment with l-DOPA. These coordination-based interfaces assembled on metal-oxide substrates in combination with a redox-probe, [Os(bpy)3](PF6)2, in solution can resemble the behavior of a rectifier.
AB - Surface-confined double-helical polymers are generated by dynamic covalent assembly with preservation of chirality, metal coordination environment, and oxidation state of the precursor complexes. This one-step procedure involves both in solution and solution-to-surface assembly and resulted in chiral interfaces where pairs of ligands are wrapped around arrays of metal ions. In-plane XRD experiments revealed the formation of a highly ordered structure along the substrate surface. The chirality of the surfaces is expressed by the selective recognition of 3,4-dihydroxyphenylalanine (DOPA). The CD measurements show a response of the Δ-polymer-modified quartz substrates toward d-DOPA, whereas no change was observed after treatment with l-DOPA. These coordination-based interfaces assembled on metal-oxide substrates in combination with a redox-probe, [Os(bpy)3](PF6)2, in solution can resemble the behavior of a rectifier.
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U2 - 10.1021/ja4077205
DO - 10.1021/ja4077205
M3 - Article
C2 - 24102100
AN - SCOPUS:84887730770
SN - 0002-7863
VL - 135
SP - 17052
EP - 17059
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 45
ER -