Présentation de Gaëtan Basuyaux

Chiral supramolecular assemblies of metallo-polymers

In this oral communication, we describe the synthesis of some chiral metallo-polymers. The first part of this talk concerns the preparation of platinum(II) bis-urea metallo-polymers (figure 1). The solution behavior of the hybrid polymer mainly the sergeant-soldier phenomenon was examined in the presence of optically active bis urea polymers which behave as sergeants. (1)  This effect describes the chiral transfer and amplification towards achiral molecules using small portion of optically active molecules at the supramolecular level. (2)

Figure 1: Optically active bis-urea (sergeant) and hybrid metallo-polymers (soldier)
Figure 1: Optically active bis-urea (sergeant) and hybrid metallo-polymers (soldier)

In the second part, we have prepared several new enantiopur benzene-1,3,5-tricarboxamide (BTAs) incorporating coordination sites for transition metal binding (figure 2). These BTAs self-assemble through hydrogen bonds and ?-? interactions. (3) The coordination chemistry of these molecules is currently under investigation.

Figure 2: New chiral BTAs motifs prepared
Figure 2: New chiral BTAs motifs prepared

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(1)  J. Dubarle-Offner, J. Moussa, H. Amouri, B. Jouvelet, L. Bouteiller, M. Raynal, Chem. Eur. J. 2016, 22, 3985-3990. 
(2)  A. R. A. Palmans, E. W. Meijer, Angew. Chem. Int. Ed., 2007, 46, 8948-8978.  
(3)  S. Cantekin, T. F. A. de Greef, A. R. A. Palmans, Chem. Soc. Rev., 2012, 41, 6125-6132. M. Raynal, F. Portier, P. W. N. M. van Leewen, L. Bouteiller, J. Am. Chem. Soc. 2013, 16, 17687-17690.