Tools
Tools
Allampally, NK, Mayoral, MJ, Chansai, S, Lagunas, MC, Hardacre, C, Stepanenko, V, Albuquerque, RQ and Fernández, G (2016) Control over the Self-Assembly Modes of Pt<sup>II</sup> Complexes by Alkyl Chain Variation: From Slipped to Parallel π-Stacks. Chemistry - A European Journal, 22 (23). pp. 7810-7816. ISSN 0947-6539
|
Text
accepted-version.pdf - Accepted Version Download (724kB) | Preview |
Abstract
We report the self-assembly of a new family of hydrophobic, bis(pyridyl) PtII complexes featuring an extended oligophenyleneethynylene-derived π-surface appended with six long (dodecyloxy (2)) or short (methoxy (3)) side groups. Complex 2, containing dodecyloxy chains, forms fibrous assemblies with a slipped arrangement of the monomer units (dPt⋯Pt≈14 Å) in both nonpolar solvents and the solid state. Dispersion-corrected PM6 calculations suggest that this organization is driven by cooperative π-π, C-H⋯Cl and π-Pt interactions, which is supported by EXAFS and 2D NMR spectroscopic analysis. In contrast, nearly parallel π-stacks (dPt⋯Pt≈4.4 Å) stabilized by multiple π-π and C-H⋯Cl contacts are obtained in the crystalline state for 3 lacking long side chains, as shown by X-ray analysis and PM6 calculations. Our results reveal not only the key role of alkyl chain length in controlling self-assembly modes but also show the relevance of Pt-bound chlorine ligands as new supramolecular synthons. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 03 Chemical Sciences |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Pharmacy & Biomolecular Sciences |
| Publisher: | Wiley |
| Date Deposited: | 21 Sep 2016 08:30 |
| Last Modified: | 04 Sep 2021 12:30 |
| DOI or ID number: | 10.1002/chem.201600176 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/4162 |
 |
View Item |