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Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles†
Chemical Science ( IF 8.4 ) Pub Date : 2018-08-01 00:00:00 , DOI: 10.1039/c8sc02935k
Alexandre Homberg 1 , Elodie Brun 1 , Francesco Zinna 1 , Simon Pascal 1 , Marcin Górecki 2 , Luc Monnier 1 , Céline Besnard 3 , Gennaro Pescitelli 2 , Lorenzo Di Bari 2 , Jérôme Lacour 1
Affiliation  

Straightforward synthesis and resolution of a series of chiral fluorescent macrocycles are presented, together with their electronic circular dichroism (ECD), strong excimer fluorescence (EF, λ 300 to 650 nm) and allied highly circularly polarized luminescence (CPL, glum up to 1.7 × 10−2). The ECD, EF and CPL responses are strongly affected by the presence of metal ions (Na+, Ba2+) thanks to deep conformational changes. While ECD signals can be almost completely reversibly inverted upon the complexation/decomplexation of metal ions in a typical binary response, CPL signals are reversibly quenched concomitantly. The designed macrocycles display thus a remarkable combination of both +/− ECD and on/off CPL reversible switching.

中文翻译:

ECD 的可逆转换和 CPL 与手性荧光大环化合物的猝灭的组合†

介绍了一系列手性荧光大环化合物的简单合成和分辨率,以及它们的电子圆二色性 (ECD)、强准分子荧光(EF,λ 300 至 650 nm)和相关的高度圆偏振发光(CPL,g lum高达 1.7 × 10 -2 )。ECD、EF 和 CPL 响应受金属离子(Na +、Ba 2+) 由于深层构象变化。虽然在典型的二元响应中金属离子的络合/解络合时 ECD 信号几乎可以完全可逆地反转,但 CPL 信号同时可逆地猝灭。因此,设计的大周期显示了 +/- ECD 和开/关 CPL 可逆开关的显着组合。
更新日期:2018-08-01
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