通过八组分网络内的化学信号可逆自组装的催化活性纳米转子。
Catalytically active nanorotor reversibly self-assembled by chemical signaling within an eight-component network.
作者信息
Goswami Abir, Pramanik Susnata, Schmittel Michael
机构信息
Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Str. 2, D-57068 Siegen, Germany.
出版信息
Chem Commun (Camb). 2018 Apr 17;54(32):3955-3958. doi: 10.1039/C8CC01496E.
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.
一种具有催化活性的三组分纳米转子通过远程控制进行可逆的自组装和拆卸。当加入锌（II）离子（2当量）作为外部化学触发剂到发射器[Cu(1)]⁺和预转子组件[(S)·(R)]的混合物中时，两当量的铜（I）离子从[Cu(1)]⁺转移到[(S)·(R)]的两个菲咯啉位点。结果，[Zn(1)]²⁺与三组分组件[Cu₂(S)(R)]²⁺一起形成，[Cu₂(S)(R)]²⁺既是一个纳米转子（k₂₉₈ = 46 kHz，ΔH‡ = 49.1 ± 0.4 kJ mol⁻¹，ΔS‡ = 9.5 ± 1.7 J mol⁻¹ K⁻¹），也是点击反应的催化剂（催化开启：A + B→AB）。从混合物中去除锌会使转移顺序逆转，从而促使催化活性转子拆卸（催化关闭）。开/关催化循环在完整网络中原位运行了两次。
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