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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Kočí, Jan | Prague |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Martir, Diego Rota
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article
A Pd3L6 supramolecular cage incorporating photoactive [2.2]paracyclophane Units
Abstract
[2.2]Paracyclophane (pCp) scaffolds, unlike many -conjugated building blocks, have been rarely explored in supramolecular self-assembly. Herein we report the synthesis and characterization of two ligands, <b>pCpd3py</b> and <b>pCpd4py</b>, composed of a pCp core functionalized at its 7- and 15-positions respectively with 3-pyridyl and 4-pyridyl units. The self-assembly of <b>pCpd4py</b> with Pd<sup>2+</sup> metal ions afforded a [Pd<sub>3</sub>(<b>pCpd4py</b>)6]<sup>6+</sup> cage structure, <b>pCpd4py-Pd</b>, where the six <b>pCpd4py</b> ligands doubly bridge each edge of the Pd<sub>3</sub> triangular core. The ligand <b>pCpd4py</b> and the palladium cage <b>pCpd4py-Pd</b> 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.