Direct evidence for hula twist and single-bond rotation photoproducts.
Direct evidence for hula twist and single-bond rotation photoproducts.
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DOI:
10.1038/s41467-018-04928-9
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发表时间:
2018-06-28
影响因子:
16.6
通讯作者:
Dube H
中科院分区:
文献类型:
--
作者:
Gerwien A;Schildhauer M;Thumser S;Mayer P;Dube H
Photoisomerization reactions are quintessential processes driving molecular machines and motors, govern smart materials, catalytic processes, and photopharmacology, and lie at the heart of vision, phototaxis, or vitamin production. Despite this plethora of applications fundamental photoisomerization mechanisms are not well understood at present. The famous hula-twist motion—a coupled single and double-bond rotation—was proposed to explain proficient photoswitching in restricted environments but fast thermal follow-up reactions hamper identification of primary photo products. Herein we describe an asymmetric chromophore possessing four geometrically distinct diastereomeric states that do not interconvert thermally and can be crystallized separately. Employing this molecular setup direct and unequivocal evidence for the hula-twist photoreaction and for photoinduced single-bond rotation is obtained. The influences of the surrounding medium and temperature are quantified and used to favor unusual photoreactions. Based on our findings molecular engineers will be able to implement photo control of complex molecular motions more consciously. Photoisomerization mechanisms govern important (bio)catalytic reactions and lie at the core of many functional materials. Here, the authors report a molecular setup that allows for the direct and separate observation of three fundamental photoreactions, namely the hula twist, single-bond rotation, as well as double-bond isomerization.
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影响因子:
62.1
作者:
Ernst, Oliver P.;Lodowski, David T.;Elstner, Marcus;Hegemann, Peter;Brown, Leonid S.;Kandori, Hideki
通讯作者:
Kandori, Hideki
DOI:
10.1073/pnas.97.17.9379
发表时间:
2000-08-15
影响因子:
11.1
作者:
González-Luque, R;Garavelli, M;Olivucci, M
通讯作者:
Olivucci, M
影响因子:
5.2
作者:
Gerwien, Aaron;Reinhardt, Till;Dube, Henry
通讯作者:
Dube, Henry
影响因子:
21.8
作者:
Iamsaard, Supitchaya;Asshoff, Sarah J.;Katsonis, Nathalie
通讯作者:
Katsonis, Nathalie
影响因子:
16.6
作者:
Fuhrmann, Anne;Goestl, Robert;Wendt, Robert;Koetteritzsch, Julia;Hager, Martin D.;Schubert, Ulrich S.;Brademann-Jock, Kerstin;Thuenemann, Andreas F.;Noechel, Ulrich;Behl, Marc;Hecht, Stefan
通讯作者:
Hecht, Stefan