Chirality transfer from gold nanocluster to adsorbate evidenced by vibrational circular dichroism.
Chirality transfer from gold nanocluster to adsorbate evidenced by vibrational circular dichroism.
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DOI：
10.1038/ncomms8117
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发表时间：
2015-05-11
影响因子：
16.6
通讯作者：
Buergi, Thomas
中科院分区：
文献类型：
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作者：
Dolamic, Igor;Varnholt, Birte;Buergi, Thomas
手性从一组分子转移到另一组分子是手性技术应用的基础，并且可能在地球上建立纯手性方面发挥了至关重要的作用。在这里，我们表明，一个固有的手性金团簇可以转移其手性的非手性分子吸附在其表面上。手性Au 38（2-PET）24（2-PET=2-苯硫酚）簇对映异构体的解决方案显示出强烈的振动圆二色性（VCD）信号的非手性吸附的振动。密度泛函理论（DFT）计算表明，2-PET分子采用手性构象。从团簇到非手性吸附物的手性转移是两个镜像之一的偏好的原因。拥挤簇表面吸附分子间的相互作用似乎起着主导作用的现象。这种从金属到吸附物的手性转移可能在多相不对称催化中起重要作用。 手性从表面到分子物种的转移可能在从同手性的起源到多相催化的领域中产生影响。在这里，作者表明，一个手性金簇可以转移其固有的手性吸附，非手性分子，使他们采取手性构象。
The transfer of chirality from one set of molecules to another is fundamental for applications in chiral technology and has likely played a crucial role for establishing homochirality on earth. Here we show that an intrinsically chiral gold cluster can transfer its handedness to an achiral molecule adsorbed on its surface. Solutions of chiral Au38(2-PET)24 (2-PET=2-phenylethylthiolate) cluster enantiomers show strong vibrational circular dichroism (VCD) signals in vibrations of the achiral adsorbate. Density functional theory (DFT) calculations reveal that 2-PET molecules adopt a chiral conformation. Chirality transfer from the cluster to the achiral adsorbate is responsible for the preference of one of the two mirror images. Intermolecular interactions between the adsorbed molecules on the crowded cluster surface seem to play a dominant role for the phenomena. Such chirality transfer from metals to adsorbates likely plays an important role in heterogeneous enantioselective catalysis. The transfer of chirality from surfaces to molecular species may have implications in areas from the origin of homochirality to heterogeneous catalysis. Here, the authors show that a chiral gold cluster can transfer its inherent chirality to adsorbed, achiral molecules, causing them to adopt chiral conformations.
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影响因子：
3.3
作者：
Dolamic, Igor;Varnholt, Birte;Buergi, Thomas
通讯作者：
Buergi, Thomas
影响因子：
7.4
作者：
Knoppe, Stefan;Boudon, Julien;Buergi, Thomas
通讯作者：
Buergi, Thomas
影响因子：
15
作者：
Qian, Huifeng;Eckenhoff, William T.;Jin, Rongchao
通讯作者：
Jin, Rongchao
影响因子：
4.9
作者：
Gautier, C;Bürgi, T
通讯作者：
Bürgi, T
影响因子：
16.6
作者：
通讯作者：
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