Nowok Andrzej, Dulski Mateusz, Grelska Joanna, Szeremeta Anna Z, Jurkiewicz Karolina, Grzybowska Katarzyna, Musiał Małgorzata, Pawlus Sebastian
Institute of Physics, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.
Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
J Phys Chem Lett. 2021 Mar 4;12(8):2142-2147. doi: 10.1021/acs.jpclett.1c00186. Epub 2021 Feb 24.
A series of five alcohols (3-methyl-2-butanol, 1-cyclopropylethanol, 1-cyclopentylethanol, 1-cyclohexylethanol, and 1-phenylethanol) was used to study the impact of the size of steric hindrance and its aromaticity on self-assembling phenomena in the liquid phase. In this Letter, we have explicitly shown that the phenyl ring exerts a much stronger effect on the self-organization of molecules via the O-H···O scheme than any other type of steric hindrance, leading to a significant decline in the size and concentration of the H-bonded clusters. Given the combination of calorimetric, dielectric, infrared, and diffraction studies, this phenomenon was ascribed to its additional proton-acceptor function for the competitive intermolecular O-H···π interactions. The consequence of this is a different packing of molecules on the short- and medium-range scale.
使用一系列五种醇（3-甲基-2-丁醇、1-环丙基乙醇、1-环戊基乙醇、1-环己基乙醇和1-苯乙醇）来研究空间位阻大小及其芳香性对液相中自组装现象的影响。在本信函中，我们明确表明，苯环通过O-H···O方案对分子自组织的影响比任何其他类型的空间位阻都要强得多，导致氢键簇的大小和浓度显著下降。考虑到量热、介电、红外和衍射研究的综合结果，这种现象归因于其对竞争性分子间O-H···π相互作用的额外质子受体功能。其结果是分子在短程和中程尺度上的堆积方式不同。
