TY  - JOUR
A1  - Paul, Indrajit
A1  - Ghosh, Amit
A1  - Bolte, Michael
A1  - Schmittel, Michael
T1  - Remote control of the synthesis of a [2]rotaxane and its shuttling via metal‐ion translocation
T2  - ChemistryOpen
N2  - 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.
KW  - remote control
KW  - metal-ion translocation
KW  - colorimetric signals
KW  - rotaxane shuttling
KW  - chemical signaling
Y1  - 2019
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/53562
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-535620
SN  - 2191-1363
N1  - This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
VL  - 8
IS  - 11
SP  - 1355
EP  - 1360
PB  - Wiley-VCH-Verl.
CY  - Weinheim
ER  -