We present the synthesis and characterization of a series of neutral and cationic Nile Red cyclopalladated complexes, first examples of covalent coordination of Nile Red to a Pd(II) metal centre. The Pd(II) coordination sphere is completed by a series of ancillary substituted ligands (acetylacetonates or bipyridine derivatives) selected in order to tune the photophysical properties and/or to enhance the supramolecular order. Both neutral and cationic columnar rectangular metallomesogens have been obtained. Emission has been observed only for neutral complexes (both in solution and mesophase) but quenched in cationic complexes. © 2012 Copyright Taylor and Francis Group, LLC.
Neutral and Cationic Cyclopalladated Nile Red Metallomesogens: Synthesis and Characterization
A. Ionescu;N. Godbert;I. Aiello;A. Crispini;M. Ghedini
2012-01-01
Abstract
We present the synthesis and characterization of a series of neutral and cationic Nile Red cyclopalladated complexes, first examples of covalent coordination of Nile Red to a Pd(II) metal centre. The Pd(II) coordination sphere is completed by a series of ancillary substituted ligands (acetylacetonates or bipyridine derivatives) selected in order to tune the photophysical properties and/or to enhance the supramolecular order. Both neutral and cationic columnar rectangular metallomesogens have been obtained. Emission has been observed only for neutral complexes (both in solution and mesophase) but quenched in cationic complexes. © 2012 Copyright Taylor and Francis Group, LLC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
