Abstract
A series of dinuclear ruthenium complexes with 1,2-dicarbonylhydrazido (DCH) ligands having various substituents were prepared in order to study the correlation between their optical, electrochemical behaviour and the electron density within the bridging ligands. As the average donor strength of the substituent increases, the oxidation potential shifts to a lower value and the metal-to-metal charge transfer (MMCT) band shifts to a higher energy. A strong MMCT absorption in the near-infrared region makes these compounds potentially useful for optical attenuation. The intrinsic attenuation property of these materials depends mainly on the concentration of ruthenium content in the complexes. The first dendritic DCH–Ru complex was prepared and showed a strong electrochromism at around 1550 nm and a fast switching speed of less than 2 s. A variable optical attenuator device based on the crosslinked ruthenium dendrimer is demonstrated with 18 000 switching cycles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
