https://scholars.lib.ntu.edu.tw/handle/123456789/626321
標題: | On–off switching of the correlated motion in a rotation-inversion dual-mode molecular system | 作者: | Chen Z.-J Lu H.-F Chao I JYE-SHANE YANG |
關鍵字: | molecular device; organic chemistry; spectroscopy; theoretical molecular science | 公開日期: | 2022 | 來源出版物: | Journal of the Chinese Chemical Society | 摘要: | We report herein a new rotation-inversion dual-motion molecular switch (1), in which a 3,3-dimethylazetidinyl (DMAZ) group is the rotator and a stiff-stilbene is the helical stator. There are two sets of nuclear magnetic resonance (NMR) signals in the DMAZ group, the H-shaped AZ protons and the planar C2-symmetrical Me protons, for probing the kinetics of the DMAZ rotation and the stiff-stilbene inversion. While the two motion modes are highly correlated in (E)-1, they are decoupled in (Z)-1. The rotation-inversion correlated motion in (E)-1 is governed by the faster inversion mode, whereas the inversion is much slower than the rotation in (Z)-1. Consequently, photochemical isomerization between (E)-1 and (Z)-1 switches not only the relative rate of the rotation versus inversion motion but also the on–off behavior of the rotation-inversion correlated motion. This work shows the cooperation of two sets of proton signals in elucidating the correlated motion in a dual-motion molecular system. © 2022 Chemical Society Located in Taipei and Wiley-VCH GmbH. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131635115&doi=10.1002%2fjccs.202200190&partnerID=40&md5=688e18658ea6e1d9f9573c78cfbc0f57 https://scholars.lib.ntu.edu.tw/handle/123456789/626321 |
ISSN: | 00094536 | DOI: | 10.1002/jccs.202200190 |
顯示於: | 化學系 |
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