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Power of counterions, chirality transfer from a small molecule to functional materials - Reiko ODA

CBMN, Bordeaux

LPS Moyen Amphi

Recently, there are many reports on biologically inspired helical structure obtained by polymers, foldamers and low molecular-weight molecules. The helices with controllable pitches are attractive not only to mimic nature, but also for the wide range of applications in materials sciences, chemical and biomaterial sensing, and enantioselective catalysis. We have reported that chiral supramolecular assembly system can be achieved from non-chiral cationic surfactants with chiral counterions [1], the role of the latter is extremely important to control the intimate morphologies of these chiral nanostructures. Such structures can then be used as scaffold to obtain hybrid organic/inorganic nanohelices [2], which can be used as a) nano-sensors, b) biomimicking objects, or c) the chiral environment of which can be used to organize nanoparticles or chromophore [3] and thus induce chiroptical signals.

[1] a) Oda, R., Huc, I., Schmuts, M. Candau, S. J., Mackintosh, F. C. Nature, 1999, 399, 566 ; b) Brizard, A., Aimé, C., Labrot, T., Huc, I., Berthier, D., Artzner, F., Desbat, B., Oda, R. J. Am. Chem. Soc., 2007, 129¸ 3754. c) R. Tamoto, N. Daugey, T. Buffeteau, B. Kauffmann, M. Takafuji, H. Ihara and R. Oda Chem commun, 2015, 51, 3518-3521
[2] a) Delclos, T. ; Aimé, C. ; Pouget, E. ; Brizard, A. ; Huc, I. ; Delville, M.-H. ; Oda, R., Nano Letters 2008, 8 (7), 1929-1935 ; b) Okazaki, Y. ; Cheng, J. ; Dedovets, D. ; Kemper, G. ; Delville, M.-H. ; Durrieu, M.-C. Ihara, H. ; Takafuji, M. ; Pouget, E. ; Oda R. ; Acs Nano, 2014. 8(7) : 6863-6872 ; c) Y Okazaki, J Cheng, D Dedovets, G Kemper, MH Delville, MC Durrieu, H Ihara, M Takafuji, E Pouget, R Oda, Chiral Colloids : Homogenous Suspension of Individualized SiO2 Helical and Twisted Nanoribbons", ACS Nano, 2014 (6) PMID : 24883981
[3] (a) Tamoto, R. ; Lecomte, S. ; Si, S. ; Moldovan, S. ; Ersen, O. ; Delville, M.-H. ; Oda, R., The Journal of Physical Chemistry C 2012, 116 (43), 23143-23152 b) N. Ryu, Y. Okazaki, K. Hirai, M.Takafuji, S. Nagaoka, E. Pouget, H. Ihara, and R. Oda, Chem Commun, 2016, 52, 34, 5600-5603 c) J. Cheng, G. Le Saux, J. Gao, T. Buffeteau, Y. Battie, P. Barois, V. Ponsinet, M.-H.Delville, O. Ersen, E. Pouget, and R. Oda DOI : 10.1021/acsnano.6b08723


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