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The 28th CIMoS Seminar

Lecture Title Chirality related properties of helicene and tetrathiafulvalene materials
Date Friday 10 March 2023 16:00 to 17:00
Lecturer Prof. Narcis Avarvari (Laboratoire MOLTECH-Anjou, CNRS - Universite d'Angers, France)
Place

IMS main office building, Room 201

Summary

Chirality manifests itself in many areas of physics, chemistry and biology, where objects or materials can exist in two non super-imposable forms, one being the mirror image of the other.[1] Introduction of chirality into conducting systems is a topic of much current interest as it allows the preparation of multifunctional materials in which the chirality might modulate the structural disorder or expresses its influence through the electrical magneto-chiral anisotropy effect.[2] The access to various chiral electroactive precursors for molecular conductors is therefore of paramount importance.[3] Our endeavour towards chiral molecular superconductors will be outlined.[4]

Another chirality related effect is the chirality induced spin selectivity (CISS) consisting in a preferential spin transmission through a chiral material. We will discuss helicene and tetrathiafulvalene based materials showing this property.[5]

 

[1] G. H. Wagnière, On Chirality and the Universal Asymmetry 2007, Wiley-VCH, Weinheim.

[2] F. Pop, P. Auban-Senzier, E., Canadell, G. L. J. A. Rikken, N. Avarvari, Nat. Commun. 2014, 5, 3757.

[3] a) N. Avarvari, J. D. Wallis, J. Mater. Chem. 2009, 19, 4061; b) F. Pop, N. Zigon, N. Avarvari, Chem. Rev. 2019, 119, 8435.

[4] N. Mroweh, C. Mézière, F. Pop, P. Auban-Senzier, P. Alemany, E. Canadell, N. Avarvari, Adv. Mater. 2020, 32, 2002811.

[5] Y. Liang, K. Banjac, K. Martin, N. Zigon, S. Lee, N. Vanthuyne, F. A. Garcés-Pineda, J. R. Galán-Mascarós, X. Hu, N. Avarvari, M. Lingenfelder, Nat. Commun. 2022, 13, 3356.

Contact

YAMAMOTO, Hiroshi