Simple Azo Dyes Provide Access to Versatile Chiroptical Switches
Simple Azo Dyes Provide Access to Versatile Chiroptical Switches
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简单的偶氮染料提供了多功能手性光学开关
DOI:
10.1002/ejoc.201500485
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发表时间:
2015
影响因子:
2.8
通讯作者:
Anger E
中科院分区:
文献类型:
--
作者:
Anger E
Azo dyes have played an important role in the development of the chemical industry for 150 years. The azo‐core of these dyes can undergotranstocisphotoisomerization, which allows azobenzene derivatives to act as light triggered molecular switches. Here, we showed that simple derivatization of Sudan I provides access to chiroptical molecular switches, and that the properties of these switches can be readily tuned by modification of the molecular structure. The synthesis, characterization, photoisomerization, thermal stability, chiral HPLC resolution, determination of absolute configuration and chiroptical properties of chiroptical switches based on Sudan I are reported.ortho‐difluorinated Sudan I derivatives have improved thermal stabilities and switching properties compared to switches based on Sudan I itself. Transfer of stereochemical information from a non‐racemic chiral unit to the π‐conjugated system of the dye and exciton‐coupled circular dichroism are both observed. The chiral unit influences the geometry and hence the spectra ofcisandtrans‐isomers differently, which is the mechanistic basis of chiroptical switching.
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DOI:
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发表时间:
1954
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影响因子:
--
作者:
F. Weisenborn;J. Bolger;D. Rosen;L. Mann;L. Johnson;H. L. Holmes
通讯作者:
H. L. Holmes
DOI:
--
发表时间:
--
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影响因子:
--
作者:
A. Noble
通讯作者:
A. Noble
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
H. Stobbe
通讯作者:
H. Stobbe
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:
15
作者:
Bleger, David;Schwarz, Jutta;Hecht, Stefan
通讯作者:
Hecht, Stefan