Monthly Archives: October 2021

PhD position

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Supervisor : Reiko Oda, Dario Bassani
Laboratory/campus :
Starting date : 2022-01-03
Duration/month : 36
Preferred Majors for applicants : Chemistry, Physical chemistry
Chiral Induction from Microns to Electrons using carbon nanomaterials Laboratories : CBMN and ISM, CNRS/University of Bordeaux Supervisors: Reiko Oda and Dario Bassani We aim to create chiral carbon nanomaterials (CNM) (nano-helices) with controlled helicities and pitches. They are extremely attractive objects because they are chemically and thermally stable, exhibiting high photostability and intense photoluminescence. The goal of this project is to induce a controllable spectral circular polarization and to observe the non-linear chiroptic properties of these CNMs. Their morphologies make it possible to probe the effect of symmetry breaking at the sub-micrometric scale, currently unattainable by the molecular approach or the "top-down" approach. The candidate needs to have a Master degree (or equivalence) in organic/physical chemistry and have experiences in organic/colloid/photo chemistry and self-assembly. Please send a motivation letter, Curriculum Vitae and 2 recommendation letters to: Reiko Oda (reiko.oda@u-bordeaux.fr) and Dario Bassani (dario.bassani@u-bordeaux.fr)

Serena Arnaboldi’s seminar (21/10/15)

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Transfer of chiral information for static and dynamic electroanalytical approaches

IECB: salle Haut Brion, 15th of oct. at 11H00

All electrochemical processes are intrinsically “intelligent”; chirality can make them even smarter, endowing them with a superior level of selectivity, and making them applicable to issues of much higher added value, e.g. in the pharmaceutical and biological field, or in smart devices. In spite of this, chiral electrochemistry is still immature.

With respect to former approaches, the inherent chirality concept can provide the breakthrough. [1] In fact, it implies chirality and key functional properties, like electroactivity, to originate from the same structural element, which coincides with the main backbone of the chiral selector. Such unique identity endows the selector with extraordinary chirality manifestations and can be propagated from molecular level to the macroscopic one. Unprecedented recognition, in terms of energy differences, was recently observed, implementing inherently chiral materials both as enantiopure electrode surfaces and media. [2, 3] Recently, attractive potentialities of these systems were also exploited in the field of bipolar electrochemistry [4] and in the one of autonomous swimmers [5] allowing to correlate the output signal with the concentration of the enantiomers present in solution.

 

[1] F. Sannicolò, S. Arnaboldi, T. Benincori, V. Bonometti, R. Cirilli, L. Dunsch, W. Kutner, G. Longhi, P.R. Mussini, M. Panigati, M. Pierini, S. Rizzo, Potential-Driven Chirality Manifestations and Impressive Enantioselectivity by Inherently Chiral Electroactive Organic Films. 2014, ANGEWANDTE CHEMIE INTERNATIONAL EDITION, 53, 2623-2627.

[2] S. Arnaboldi, T. Benincori, R. Cirilli, W. Kutner, M. Magni, P.R. Mussini, K. Noworyta, F. Sannicolò, Inherently chiral electrodes: the tool for chiral voltammetry. 2015, CHEMICAL SCIENCE, 6, 1706-1711.

[3] S. Rizzo, S. Arnaboldi, V. Mihali, R. Cirilli, A. Forni, A. Gennaro, A.A. Isse, M. Pierini, P.R. Mussini, F. Sannicolò, “Inherently Chiral” Ionic-Liquid Media: Effective Chiral Electroanalysis on Achiral Electrodes. 2017, ANGEWANDTE CHEMIE INTERNATIONAL EDITION, 56, 2079-2082.

[4] S. Arnaboldi, B. Gupta, T. Benincori, G. Bonetti, R. Cirilli, A. Kuhn, Absolute Chiral Recognition with Hybrid Wireless Electrochemical Actuators. 2020, ANALYTICAL CHEMISTRY, 10.1021/acs.analchem.0c01817.

[5] S. Arnaboldi; G. Salinas; A. Karajic; P. Garrigue; T. Benincori; R. Cirilli; S. Bichon; S. Gounel; N. Mano; A. Kuhn, Direct dynamic readout of molecular chirality with autonomous enzyme driven swimmers. 2021, NATURE CHEMISTRY, 10.1038/s41557-021-00798-9.