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http://dx.doi.org/10.25819/ubsi/10330
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Remote_control_of_the_synthesis of_a_2_Rotaxane.pdf | 1.64 MB | Adobe PDF | View/Open |
Dokument Type: | Article | metadata.dc.title: | Remote control of the synthesis of a [2]rotaxane and its shuttling via metal-ion translocation | Authors: | Paul, Indrajit Ghosh, Amit Schmittel, Michael |
Institute: | Department Chemie - Biologie | Free keywords: | Remote control, Metal-ion translocation, Colorimetric signals, Rotaxane shuttling, Chemical signaling, Metall-Ionen-Translokation | Dewey Decimal Classification: | 540 Chemie | Issue Date: | 2019 | Publish Date: | 2023 | Source: | ChemistryOpen ; 8(11), S. 1355–1360. - https://doi.org/10.1002/open.201900293 | Abstract: | 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. |
Description: | Finanziert im Rahmen der DEAL-Verträge durch die Universitätsbibliothek Siegen |
DOI: | http://dx.doi.org/10.25819/ubsi/10330 | URN: | urn:nbn:de:hbz:467-25233 | URI: | https://dspace.ub.uni-siegen.de/handle/ubsi/2523 | License: | http://creativecommons.org/licenses/by-nc/4.0/ |
Appears in Collections: | Geförderte Open-Access-Publikationen |
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