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

Abstract

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.

Metadata

Item Type:	Article
Authors/Creators:	Silalahi, Imelda Hotmarisi Prokhorov, Anton M. (ap556@york.ac.uk) Tanner, Theo Cowling, Stephen J. https://orcid.org/0000-0002-4771-9886 Whitwood, Adrian C. Bruce, Duncan W. https://orcid.org/0000-0002-1365-2222
Copyright, Publisher and Additional Information:	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). Publisher Copyright: © 2022 The Authors
Dates:	Accepted: 15 July 2022 Published (online): 28 July 2022 Published: 15 October 2022
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Chemistry (York)
Depositing User:	Pure (York)
Date Deposited:	12 Aug 2022 09:40
Last Modified:	10 Apr 2025 23:33
Published Version:	https://doi.org/10.1016/j.jorganchem.2022.122455
Status:	Published
Refereed:	Yes
Identification Number:	10.1016/j.jorganchem.2022.122455
Related URLs:	http://www.scopus.com/inward/record.url?...
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:189912

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

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