Generation of a Dynamic System of Three‐Dimensional Tetrahedral Polycatenanes

Black, Samuel P.; Stefankiewicz, Artur R.; Smulders, Maarten M. J.; Sattler, Dominik; Schalley, Christoph A.; Nitschke, Jonathan R.; Sanders, Jeremy K. M.

doi:10.1002/ange.201209708

Cited by 45 publications

(15 citation statements)

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“…SCCs typically display well-defined internal cavities with size and shape tunability, which provides the impetus for applications in host-guest chemistry [20][21][22] , catalysis 23 , molecular flasks 24 , supramolecular polymers [25][26][27] , bioengineering 28 and so on. Although quite a few metal complexes with attractive optical features are known 29,30 , light-emitting materials based on SCC platforms are relatively underdeveloped despite their prospects as advanced optical materials 31 .…”

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confidence: 99%

Highly emissive platinum(II) metallacages

et al. 2015

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Light-emitting materials, especially those with tunable wavelengths, attract considerable attention for applications in optoelectronic devices, fluorescent probes, sensors and so on. Many species evaluated for these purposes either emit as a dilute solution or on aggregation, with the former often self-quenching at high concentrations, and the latter falling dark when aggregation is disrupted. Here we preserve emissive behaviour at both low- and high-concentration regimes for two discrete supramolecular coordination complexes (SCCs). These tetragonal prismatic SCCs are self-assembled on mixing a metal acceptor, Pt(PEt3)2(OSO2CF3)2, with two organic donors, a pyridyl-decorated tetraphenylethylene and one of two benzene dicarboxylate species. The rigid organization of these fluorescence-active ligands imparts an emissive behaviour to dilute solutions of the resulting assemblies. Furthermore, on aggregation the prisms exhibit variable-wavelength visible-light emission, including rare white-light emission in tetrahydrofuran. The favourable photophysical properties and solvent-dependent aggregation behaviour provide a means to tune emission wavelengths.

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confidence: 99%

Highly emissive platinum(II) metallacages

et al. 2015

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“…248 (iii) Kuroda's macrotricyclic homo [2]catenane of quadruply interlocked cages, 249 (iv) a macrobicyclic [3]catenane, also known as a bis [2]catenane, 250 (v) a branched [6]catenane, 135 (vi) a side-chain poly [2]catenane, 251 (vii) a main-chain poly [2]catenane, which was originally introduced by Geerts,252 (viii) a macrotricyclic hetero [2]catenane, introduced by Becher 253 (ix) a macrobicyclic hetero [4]catenane resulting from a collaboration between Vögtle and Sauvage, 254 (x) covalently bridged [2]catenanes, which originated 106 as precatena nes in Schill's directed syntheses, but later became known [255][256][257] as pretzelanes or [2]pseudocatenanes (xi) a doubly threaded macrobicyclic [2]catenane introduced by Becher 258 under the title of a [3]pseudocatenane, a topology also known [259][260][261] as a 'handcuff' catenane, (xii) a [4]pseudocatenane introduced by Chen,262 (xiii) a macrotricyclic hetero [7]catenane arising from a Nitschke-Sanders collaboration, 263 (xiv) Vögtle's cyclic bis [2]catenane, 264 and (xv) Chiu's cyclic tetrakis [2]catenane. 265 The structures of many beautiful MIMs have also been elucidated in the solid state by X-ray crystallography.…”

Section: Topological Beautymentioning

confidence: 99%

An Introduction to the Mechanical Bond

Bruns¹

2016

The Nature of the Mechanical Bond

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“…[84] Additionally, parallel use of metal coordination chemistry, imine exchange reactions, and supramolecular interactions furnished fascinating results in the field of interlocked structures. Significant examples are the Borromean rings and Solomon knots reported by Stoddart et al [85] and the synthesis of tetrahedral polycatenanes reported by Sanders, Nitschke et al [86] Hydrazone Exchange Reaction Besides the imine exchange reaction, C=N exchange involving hydrazone formation has been also widely investigated in DCC, mainly because:…”

Section: Imine Exchange Reactionmentioning

confidence: 99%

Selective Host Molecules Obtained by Dynamic Adaptive Chemistry

Matache

Bogdan

Hădade

2014

Chemistry A European J

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Up till 20 years ago, in order to endow molecules with function there were two mainstream lines of thought. One was to rationally design the positioning of chemical functionalities within candidate molecules, followed by an iterative synthesis-optimization process. The second was the use of a "brutal force" approach of combinatorial chemistry coupled with advanced screening for function. Although both methods provided important results, "rational design" often resulted in time-consuming efforts of modeling and synthesis only to find that the candidate molecule was not performing the designed job. "Combinatorial chemistry" suffered from a fundamental limitation related to the focusing of the libraries employed, often using lead compounds that limit its scope. Dynamic constitutional chemistry has developed as a combination of the two approaches above. Through the rational use of reversible chemical bonds together with a large plethora of precursor libraries, one is now able to build functional structures, ranging from quite simple molecules up to large polymeric structures. Thus, by introduction of the dynamic component within the molecular recognition processes, a new perspective of deciphering the world of the molecular events has aroused together with a new field of chemistry. Since its birth dynamic constitutional chemistry has continuously gained attention, in particular due to its ability to easily create from scratch outstanding molecular structures as well as the addition of adaptive features. The fundamental concepts defining the dynamic constitutional chemistry have been continuously extended to currently place it at the intersection between the supramolecular chemistry and newly defined adaptive chemistry, a pivotal feature towards evolutive chemistry.

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Generation of a Dynamic System of Three‐Dimensional Tetrahedral Polycatenanes

Cited by 45 publications

References 49 publications

Highly emissive platinum(II) metallacages

Highly emissive platinum(II) metallacages

An Introduction to the Mechanical Bond

Selective Host Molecules Obtained by Dynamic Adaptive Chemistry

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