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Issue 32, 2018
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Catalytically active nanorotor reversibly self-assembled by chemical signaling within an eight-component network

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Abstract

A catalytically active three-component nanorotor is reversibly self-assembled and disassembled by remote control. When zinc(II) ions (2 equiv.) are added as an external chemical trigger to the mixture of transmitter [Cu(1)]+ and pre-rotor assembly [(S)·(R)], two equiv. of copper(I) ions translocate from [Cu(1)]+ to the two phenanthroline sites of [(S)·(R)]. As a result, [Zn(1)]2+ forms along with the three-component assembly [Cu2(S)(R)]2+, which is both a nanorotor (k298 = 46 kHz, ΔH = 49.1 ± 0.4 kJ mol−1, ΔS = 9.5 ± 1.7 J mol−1 K−1) and a catalyst for click reactions (catalysis ON: A + B→AB). Removal of zinc from the mixture reverts the translocation sequence and thus commands disassembly of the catalytically active rotor (catalysis OFF). The ON/OFF catalytic cycle was run twice in situ in the full network.

Graphical abstract: Catalytically active nanorotor reversibly self-assembled by chemical signaling within an eight-component network

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Supplementary files

Article information


Submitted
22 Feb 2018
Accepted
12 Mar 2018
First published
12 Mar 2018

Chem. Commun., 2018,54, 3955-3958
Article type
Communication

Catalytically active nanorotor reversibly self-assembled by chemical signaling within an eight-component network

A. Goswami, S. Pramanik and M. Schmittel, Chem. Commun., 2018, 54, 3955
DOI: 10.1039/C8CC01496E

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