S. Butcha, S. Assavapanumat, S. Ittisanronnachai, V. Lapeyre, C. Wattanakit, A. Kuhn

Nat.Comm., 2021, 12, 1314

The design of efficient chiral catalysts is of crucial importance since it allows generating enantiomerically pure compounds. Tremendous efforts have been made over the past decades regarding the development of materials with enantioselective properties for various potential applications ranging from sensing to catalysis and separation. Recently, chiral features have been generated in mesoporous metals. Although these monometallic matrices show interesting enantioselectivity, they suffer from rather low stability, constituting an important roadblock for applications. Here, a straightforward strategy to circumvent this limitation by using nanostructured platinum-iridium alloys is presented. These materials can be successfully encoded with chiral information by co-electrodeposition from Pt and Ir salts in the simultaneous presence of a chiral compound and a lyotropic liquid crystal as asymmetric template and mesoporogen, respectively. The alloys enable a remarkable discrimination between chiral compounds and greatly improved enantioselectivity when used for asymmetric electrosynthesis (>95 %ee), combined with high electrochemical stability.

2021 1

Thumbnail I. Pavel, G. Salinas, M. Mierzwa, S. Arnaboldi, P. Garrigue, A. Kuhn ChemPhysChem, 2021, in press Numerous artificial micro- and nanomotors, as well as various swimmers have been inspired by living...
Thumbnail N. Sojic, A. Ismail, S. Voci, L. Descamps, A. Buhot, L. Leroy, A. Bouchet-Spinelli ChemPhysChem, 2021, in press This work depicts the original combination of electrochemiluminescence (ECL) and...
Thumbnail J. Yu, H. Saada, N. Sojic, G. Loget Electrochim. Acta, 2021, 381, 138238 In this article, we study the photoinduced electrochemiluminescence (PECL) of a luminol analog (L-012: 8-amino-...
Thumbnail L. Bouffier, D. Zigah, N. Sojic, A. Kuhn Annu. Rev. Anal. Chem. 14 (2021) in press This contribution gathers a selection of the most recent studies with respect to the use of bipolar...
Bipolar electrochemistry
22 March 2021
Thumbnail L. Bouffier, D. Zigah, N. Sojic, A. Kuhn Encyclopedia of Electrochemistry, Bard et al. (Eds.), Wiley, 2021, in press Bipolar electrochemistry is a technique that involves two opposite chemical...
Thumbnail A. A. Melvin, B. Gupta, K. Tieriekhov, W. Nogala, P. Garrigue, S. Reculusa, A. Kuhn Adv. Funct. Mater. 2021, in press Actuators controlled by external stimuli have received a lot of attention in...
Thumbnail S. Butcha, S. Assavapanumat, S. Ittisanronnachai, V. Lapeyre, C. Wattanakit, A. Kuhn Nat.Comm., 2021, 12, 1314 The design of efficient chiral catalysts is of crucial importance since it allows...
Thumbnail M.-C. Tatry, P. Galanopoulo, L. Waldmann, V. Lapeyre, P. Garrigue, V. Schmitt, V. Ravaine J. Colloid Interf. Sci., 2021, 589, 96-109 A series of biocompatible, thermoresponsive and amphiphilic...
Thumbnail C. Hubert, C. Chomette, A. Désert, A. Madeira, A. Perro, I. Florea, D. Ihaiawakrim, O. Ersen, A. Lombardi, E. Pertreux, F. Vialla, P. Maioli, A. Crut, N. Del-Fatti, F. Vallée, S. Mornet, J. Majimel, S....
Thumbnail D. Han, B. Goudeau, D. Jiang, D. Fang, N. Sojic Anal.Chem., 2021, DOI: 10.1021/acs.analchem.0c05123 Electrochemiluminescence (ECL) microscopy is successfully applied to image cells, micro/nano-objects and...