An efficient method for the synthesis of copillar[5]arenes was developed with FeCl3 as catalyst and different 1,4-dialkoxybenzenes and paraformaldehyde as reactants (yields: 50–85%). The host–guest property of (co)pillar[5]arenes and terminal dibromoalkanes was investigated by 1H NMR measurements and an X-ray study. The complexation behavior of the copillar[5]arenes can be tuned by changing the substituents
以FeCl 3为催化剂,以不同的1,4-二烷氧基苯和低聚甲醛为反应物,开发了一种高效的Copillar [5]芳烃合成方法(收率:50-85%)。通过1 H NMR测量和X射线研究了(co)pillar [5]芳烃和末端二溴代烷烃的主客体性质。可通过改变主体上的取代基来调节Copillar [5]芳烃的络合行为。在柱[5]-和柱[6]芳烃之间发现了完全的络合选择性,这是传感器技术的一个有趣方面。
A cyanide-triggered hydrogen-bond-breaking deprotonation mechanism: fluorescent detection of cyanide using a thioacetohydrazone-functionalized bispillar[5]arene
作者:Tai-Bao Wei、Jin-Dong Ding、Jin-Fa Chen、Bing-Bing Han、Xiao-Mei Jiang、Hong Yao、You-Ming Zhang、Qi Lin
DOI:10.1039/c7nj03937a
日期:——
a thioacetohydrazone-bridged bispillar[5]arene was developed and shown to fluorescently sense cyanide ions. The sensor manifested a response specific to cyanide over other common anions (SCN−, AcO−, HSO4−, H2PO4−, I−, Br−, ClO4−, Cl−, and F−) in DMSO/H2O (9 : 1, v/v) solution. Upon treatment with cyanide, AHP5 exhibited a significant fluorescence response accompanied by marked changes in its fluorescence
A supramolecularsensor (APRA–G) was successfully constructed via host–guest interactions between a rhodamine hydrazone functionalized pillar[5]arene (APRA) and a bis-pyridinium derivative (G), which showed highly selective and sensitive detection of toxic Hg2+ through a dual-channel (colorimetric and fluorescent) model. The detection limits of fluorescence and UV-vis spectroscopy towards Hg2+ were
A pillar[5]arene-based fluorescent sensor for sensitive detection of L-Met through a dual-site collaborative mechanism
作者:Qing-Yu Yang、You-Ming Zhang、Xiao-Qiang Ma、Hong-Qiang Dong、Yun-Fei Zhang、Wen-Li Guan、Hong Yao、Tai-Bao Wei、Qi Lin
DOI:10.1016/j.saa.2020.118569
日期:2020.10
introduced into the design and achieved high selective and sensitive recognition of L-Met. In order to realize the “dual-site collaborative recognition”, we rationallydesigned and synthesized an ester functionalized pillar[5]arene-based fluorescent sensor (SP5). And it shows blue Aggregation-induced emission (AIE) fluorescence. In the SP5, the pillar[5]arene group act as C-H···πinteractions site, and ester
L-蛋氨酸(L-Met)是人类健康中必需的氨基酸之一,有效检测L-Met是一个重要的问题。在此,“双站点协作识别”概念已成功引入设计并实现了L-Met的高度选择性和灵敏识别。为了实现“双站点协同识别”,我们合理设计并合成了一种酯官能化的基于柱[5]芳烃的荧光传感器(SP5)。并且显示蓝色聚集诱导发射(AIE)荧光。在SP5中,支柱[5]芳烃基充当CH··π相互作用位点,酯基充当多氢键受体。有趣的是,SP5具有很高的选择性和灵敏度(2.84×10 -8 M)是基于富含电子的海绵状柱[5]亚芳基和酯基通过CH··π和H键相互作用共同作用而形成的L-Met。已经通过1 H NMR,ESI-MS和理论计算(包括前沿轨道(HOMO和LUMO),静电势(ESP)和非共价相互作用(NCI))研究了这种“双站点协同识别”机制。这些理论计算不仅支持拟议的来宾身份识别机制,而且还提供了有关“双站点协作识别”模