Electrochemical responsive chiral metallo-organic nanostructures - ICS84 The 84th Annual Meeting of the Israel Chemical Society

Neta Elool Dov ¹ Ofir Eisenberg ¹ Naama Koifman ² Lothar Houben ³ Linda J.W. Shimon ³ Michal Lahav ¹ Milko E. van der Boom ¹

¹Department of Organic Chemistry, Weizmann Institute of Science, Rehovot, Israel
²Department of Chemical Engineering and the Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa, Israel
³Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, Israel

We are studying the formation of chiral nanostructures in solution, which are composed of racemic mixtures of metallo-organic complexes. Our complexes aggregate by π-π interactions. Repeat CD measurements show the random formation of these chiral supramolecular structures: positive and negative CD signals are observed under identical reaction conditions. The randomness of the assembly process and HPLC analysis indicate that chiral impurities are unlikely to direct the chirality of the supramolecular structures. The morphology of these structures was studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and cryogenic transmission electron microscopy (cryo-TEM). We use these chiral structures to fabricate electro-optical films and devices.

References:

Hu, J.; Gao, L.; Zhu, Y.; Wang, P.; Lin, Y.; Sun, Z.; Yang, S.; Wang, Q. Eur. J. 2017, 23, 1422 – 1426
Elool Dov, N.; Shankar, S.; Cohen, D.; Bendikov, T.; Rehav, K.; Shimon, L.; Lahav, M.; van der Boom, M. E. Am. Chem. Soc. 2017, 139, 11471−11481.
Balgley, R.; Algavi, Y.; Elool Dov, N.; Lahav, M.; van der Boom M. E., Chem., Int. Ed., 2018, 57, 1-7.