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首页> 外文期刊>ACS applied materials & interfaces >Chameleonic Dye Adapts to Various Environments Shining on Macrocycles or Peptide and Polysaccharide Aggregates
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Chameleonic Dye Adapts to Various Environments Shining on Macrocycles or Peptide and Polysaccharide Aggregates

机译：变色液染料适应宏型或肽和多糖聚集体闪耀的各种环境

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摘要

This work describes latent fluorescence particles (LFPs) based on a new environmentally sensitive carbazole compound aggregated in water and their use as sensors for probing various cavitands and the different stages of aggregating systems. Cyclodextrins (CDs), cucurbit[n]urils (CB[n], n = 6, 7,'8), and a resorcinarene capsule were used to study the dynamic nature of the LFPs. The fluorescence was dramatically enhanced by a proposed disaggregation-induced emission enhancement (DIEE) mechanism with specific features for CB [n]. Then, the aggregated states of the dipeptides Leu-Leu, Phe-Phe, and Fmoc-Leu-Leu (vesicles, crystals, fibers) were studied by fluorescence spectroscopy and confocal fluorescence microscopy thanks to the adaptive and emissive behavior of the LFPs, allowing us to study an interesting polymorphism phenomenon. The LFPs have then been used in the sensing of the aggregation of the polysaccharide alginate, for which distinct fluorescence turn-on is detected upon stepwise biopolymer assembly, and for amylose detection. The carbazole particles not only adapt to various environments but also display multicolor fluorescent signals. They can be used for the fast probing of the aggregation propensity of newly prepared molecules or biologically relevant compounds or to accelerate the discovery of new macrocycles or of self-assembling peptides in water.
机译：该工作基于在水中聚集的新的环保酶咔唑化合物和它们作为用于探测各种空腔和聚集系统的不同阶段的传感器来描述潜在的荧光颗粒（LFP）。环糊精（CDS），葫芦（CB [N] URIL（CB [N]，N = 6,7，'8）和间苯二酚胶囊用于研究LFP的动态性质。通过提出的分类诱导的发射增强（DIEE）机制，荧光显着增强了具有CB [n]的特定特征。然后，通过LFP的自适应和发射行为，通过荧光光谱和共聚焦荧光显微镜研究二肽Leu-Leu，Phe-Phe和Fmoc-Leu-Leu（囊泡，晶体，纤维）的聚集状态，允许我们研究一个有趣的多态性现象。然后已经使用LFPS在感测到多糖藻酸盐的聚集中，在逐步的生物聚合物组件上检测到不同的荧光导通，以及用于直链淀粉检测。咔唑颗粒不仅适应各种环境，还适应多色荧光信号。它们可用于快速探测新制备的分子或生物相关化合物的聚集倾向，或者加速在水中的新宏γ或自组装肽的发现。

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