Chiral self-discrimination and guest recognition in helicene-based coordination cages

Schulte, Thorben R.; Holstein, Julian J.; Clever, Guido H.

Chiral self-discrimination and guest recognition in helicene-based coordination cages

dc.contributor.author	Schulte, Thorben R.
dc.contributor.author	Holstein, Julian J.
dc.contributor.author	Clever, Guido H.
dc.date.accessioned	2019-06-13T05:59:30Z
dc.date.available	2019-06-13T05:59:30Z
dc.date.issued	2019-02-13
dc.description.abstract	Chiral nanosized confinements play a major role for enantioselective recognition and reaction control in biological systems. Supramolecular self‐assembly gives access to artificial mimics with tunable sizes and properties. Herein, a new family of [Pd2L4] coordination cages based on a chiral [6]helicene backbone is introduced. A racemic mixture of the bis‐monodentate pyridyl ligand L1 selectively assembles with PdII cations under chiral self‐discrimination to an achiral meso cage, cis‐[Pd2L1P2L1M2]. Enantiopure L1 forms homochiral cages [Pd2L1P/M4]. A longer derivative L2 forms chiral cages [Pd2L2P/M4] with larger cavities, which bind optical isomers of chiral guests with different affinities. Owing to its distinct chiroptical properties, this cage can distinguish non‐chiral guests of different lengths, as they were found to squeeze or elongate the cavity under modulation of the helical pitch of the helicenes. The CD spectroscopic results were supported by ion mobility mass spectrometry.	en
dc.identifier.uri	http://hdl.handle.net/2003/38091
dc.identifier.uri	http://dx.doi.org/10.17877/DE290R-20073
dc.language.iso	en	de
dc.relation.ispartofseries	Angew. Chem. Int. Ed.;58(17)
dc.rights.uri	https://creativecommons.org/licenses/by-nc/4.0/
dc.subject	Anion recognition	en
dc.subject	Chirality	en
dc.subject	Host-guest chemistry	en
dc.subject	Interpenetration	en
dc.subject	Supramolecular chemistry	en
dc.subject.ddc	540
dc.title	Chiral self-discrimination and guest recognition in helicene-based coordination cages	en
dc.type	Text	de
dc.type.publicationtype	article	de
dcterms.accessRights	open access
eldorado.openaire.projectidentifier	info:eu-repo/grantAgreement/EC/H2020/683083/EU/Reactivity and Assembly of Multifunctional, Stimuli-responsive Encapsulation Structures/RAMSES	de
eldorado.secondarypublication	true	de
eldorado.secondarypublication.primarycitation	Schulte, TR, Holstein, JJ, Clever, GH (2019) Chiral self-discrimination and guest recognition in helicene-based coordination cages. Angew. Chem. Int. Ed. 58 (17), 5562-5566	de
eldorado.secondarypublication.primaryidentifier	doi:10.1002/anie.201812926	de

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