Four planar tripyridyl ligands (Ltripy), 1,3,5-tris(pyridin-3-ylethynyl)benzene 1a, 1,3,5-tris[4-(3-pyridyl)phenyl]benzene 2a, and the hexyloxy chain functionalized derivatives 1,3,5-tris[(3-hexyloxy-5-pyridyl)ethynyl]benzene 1b, and 1,3,5-tris[4-(3-hexyloxy-5-pyridyl)phenyl]benzene 2b, were synthesized and used to generate a family of [Pd6(Ltripy)8](BF4)12 octahedral cages (Ltripy = 1a-b or 2a-b). The molecular recognition properties of the cages with neutral and anionic guests was examined, in DMSO, using NMR spectroscopy, mass spectrometry and molecular modelling. No binding was observed with simple aliphatic and aromatic guest molecules. However, anionic sulfonates were found to interact with the octahedral cages and the binding interaction was size selective. The smaller [Pd6(1a-b)8]12+ cages were able to interact with three p-toluenesulfonate guest molecules while the larger [Pd6(2a-b)8]12+ systems could host four of the anionic guest molecules. To probe the importance of the hydrophobic effect, a mixed water-DMSO (1:1) solvent system was used to reexamine the binding of the neutral organic guests adamantane, anthracene, pyrene and 1,8-naphthalimide within the cages. In this solvent system all the guests except adamantane were observed to bind within the cavities of the cages. NMR spectroscopy and molecular modelling indicated that the cages bind multiple copies of the individual guests (between 3-6 guest molecules per cage).
This research output has an Altmetric Attention Score of 7. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 December 2020.
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#7,548,687
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#5,299
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#93,299
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Outputs of similar age from Chemistry - A European Journal
#88
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Altmetric has tracked 34,427,821 research outputs across all sources so far. Compared to these this one has done well and is in the 78th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 29,593 research outputs from this source. They receive a mean Attention Score of 4.1. This one has done well, scoring higher than 82% of its peers.
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We're also able to compare this research output to 629 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 86% of its contemporaries.
