Schmittel, Michael
Preferred name
Schmittel, Michael
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8 results
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Publication Access status: Metadata only , A Constitutionally Dynamic Cage Acts as a Convertible and Adaptable Information Manager in Supramolecular LogicA three‐component molecular ensemble consisting of the constitutionally dynamic cage 1 , rotaxane 2 and luminophore 3 acts as a signal transducer which assimilates three input signals, i. e., Zn 2+ , H + , and Cu + , to perform individual logic operations (e. g. a 3‐input NOR gate with catalytic output, 3‐input AND gate with optical output) and operates as an unconventional 3‐input demultiplexer.Source Type:Article1 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Concurrent tandem catalysis enabled by nanomechanical motion in heteroleptic four-component dual-catalyst machineryThe stochastic motion (45 kHz) of a biped in a dynamic slider-on-deck kicks out a basic organocatalyst into solution while parallel freeing a silver( i ) site with both synergistically running a tandem Michael addition/hydroalkoxylation cyclization.Source Type:Article3 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Dissipative sequential catalysis via six-component machineryTriphenyl phosphane (TPP) and an epoxide as a fuel system transiently transformed a non-catalytic six-component turnstile into a four-component catalytic rotor releasing N -methyl pyrrolidine and a copper( i ) complex.Source Type:Article1 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Fast and slow walking driven by chemical fuelUsing a di Stefano fuel acid, the two-component walker-on-deck exhibits fast forward motion upon protonation and slow stepwise return to the starting point.Source Type:Article - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Interconversion between multicomponent slider-on-deck and palladium capsule: regulation of catalysis and encapsulationThe full interconversion of a multicomponent slider-on-deck and a palladium( ii ) capsule is used to establish the up/down regulation of a copper( i )-catalyzed aza Hopf cyclization that is reported by characteristic fluorescence changes.Source Type:Article1 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Proton transfer network with luminescence display controls OFF/ON catalysis that generates a high-speed slider-on-deckUpon addition/removal of silver( i ) ions and due to efficient inter-component communication, a supramolecular multicomponent network acts as an OFF/ON proton relay with luminescence display enabling switchable catalysis.Source Type:Article2 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Open Access , Remote control of the synthesis of a [2]rotaxane and its shuttling via metal-ion translocation(2019); ; Remote control in an eight-component network commanded both the synthesis and shuttling of a [2]rotaxane via metal-ion translocation, the latter being easily monitored by distinct colorimetric and fluorimetric signals. Addition of zinc(II) ions to the red colored copper-ion relay station rapidly liberated copper(I) ions and afforded the corresponding zinc complex that was visualized by a bright sky blue fluorescence at 460 nm. In a mixture of all eight components of the network, the liberated copper(I) ions were translocated to a macrocycle that catalyzed formation of a rotaxane by a double-click reaction of acetylenic and diazide compounds. The shuttling frequency in the copper-loaded [2]rotaxane was determined to k298=30 kHz (ΔH≠=62.3±0.6 kJ mol−1, ΔS≠=50.1±5.1 J mol−1 K−1, ΔG≠298=47.4 kJ mol−1). Removal of zinc(II) ions from the mixture reversed the system back generating the metal-free rotaxane. Further alternate addition and removal of Zn2+ reversibly controlled the shuttling mode of the rotaxane in this eight-component network where the ion translocation status was monitored by the naked eye.Source Type:Article258 87 - Some of the metrics are blocked by yourconsent settings
Publication Access status: Metadata only , Stepwise Dissipative Control of Multimodal Motion in a Silver(I) CatenateStepwise dissipative control of two distinct motions, i.e., shuttling and sliding, is demonstrated in a single multicomponent device. When [2]rotaxane 1 , which acts as a biped, and deck 2 were treated with AgBF 4 /PhCH 2 Br+NEt 3 as chemical fuel, the transient catenate [Ag( 1 )] + ⋅ [Ag 3 ( 2 )] 3+ was instantly generated showing multimodal motion and autonomous return to 1 and 2 . In the dissipative process, catenate [Ag( 1 )] + ⋅ [Ag 3 ( 2 )] 3+ cleanly transformed into the follow‐up transient device ( 1 ) ⋅ [Ag 3 ( 2 )] 3+ exhibiting only sliding motion. Two interference‐free dissipative cycles proved the resilience and robustness of the process.Source Type:Article
