The liquid-crystalline and luminescence properties of polycatenar diphenylpyridine complexes of Palladium(II)

Imelda Hotmarisi Silalahi, Anton M. Prokhorov, Theo Tanner, Stephen J. Cowling, Adrian C. Whitwood, Duncan W. Bruce*

*Corresponding author for this work

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Palladium complexes of polycatenar 2,5-diphenylpyridine ligands were prepared in a two-stage reaction from (NH4)2[PdCl4]; their liquid crystal and emission properties are reported and discussed. For tetracatenar and hexacatenar derivatives, neither the ligand nor their complexes were liquid crystalline. The tricatenar ligand only showed a SmC phase identified by a Schlieren texture. Palladation of the tricatenar and dicatenar ligands led to complexes showing a SmA phase, with a range that depended on the ligand. The identity of the mesophases was supported by small angle X-ray scattering (SAXS). All ligands and complexes exhibited luminescence properties with the emission lifetimes of the complexes suggesting the absence of phosphorescence.

Original languageEnglish
Article number122455
Number of pages8
Early online date28 Jul 2022
Publication statusPublished - 15 Oct 2022

Bibliographical note

Funding Information:
We thank the EPSRC for support (EP/H006710/1; AMP) and the University of York for a postgraduate studentship (TT). This publication is enabled through a Post-Doctoral Grant (IHS) from the Directorate for Resources, the Ministry of Education and Culture of the Republic of Indonesia.

Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Imelda Hotmarisi Silalahi reports financial support was provided by Ministry of Education and Culture of the Republic of Indonesia. Theo Tanner reports financial support was provided by University of York. Duncan Bruce & Anton Prokhorov report financial support was provided by Engineering and Physical Sciences Research Council (EP/H006710/1).

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