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A Pd3L6 supramolecular cage incorporating photoactive [2.2]paracyclophane units

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Abstract

[2.2]Paracyclophane (pCp) scaffolds, unlike many π-conjugated building blocks, have been rarely explored in supramolecular self-assembly. Herein we report the synthesis and characterization of two ligands, pCpd3py and pCpd4py, composed of a pCp core functionalized at its 7- and 15-positions respectively with 3-pyridyl and 4-pyridyl units. The self-assembly of pCpd4py with Pd2+ metal ions afforded a [Pd3(pCpd4py)6]6+ cage structure, pCpd4py-Pd, where the six pCpd4py ligands doubly bridge each edge of the Pd3 triangular core. The ligand pCpd4py and the palladium cage pCpd4py-Pd have been characterized by NMR spectroscopy, ESI-MS spectrometry and X-ray diffraction analyses and their photophysical properties investigated by steady-state and time-resolved emission spectroscopy as well as time-dependent density functional theory calculations.

Graphical abstract: A Pd3L6 supramolecular cage incorporating photoactive [2.2]paracyclophane units

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Publication details

The article was received on 06 Sep 2019, accepted on 31 Oct 2019 and first published on 01 Nov 2019


Article type: Research Article
DOI: 10.1039/C9QI01147A
Inorg. Chem. Front., 2020, Advance Article

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    A Pd3L6 supramolecular cage incorporating photoactive [2.2]paracyclophane units

    D. Rota Martir, L. Delforce, D. B. Cordes, A. M. Z. Slawin, S. L. Warriner, D. Jacquemin and E. Zysman-Colman, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/C9QI01147A

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