Chiral multifunctional molecules based on organometallic helicenes: Recent advances

Organometallic chemistry of helicenes ligands has received great attention and can be considered as a useful tool for the development of chiral multifunctional molecules displaying optimized chiroptical properties in combination with other properties provided by metallic centers. Over the past decade, we have explored different families of transition-metal based helicenes bearing a C-M bond, namely metal-ethynyl and metal-vinyl-helicenes, cyclometallated helicenic complexes based on (CN)-N-boolean AND or (CC)-C-boolean AND chelates, and helicene-bipy complexes bearing either bipy (CN)-N-boolean AND chelate or C-M bonds with ancillary ligands. We have studied their electronic and (chir)optical properties, together with potential applications in materials science. In this review, we will describe the recent advances achieved in our group in this field of research. (C) 2018 Elsevier B.V. All rights reserved.