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Synthesis and evaluation of a novel fluorescent sensor based on hexahomotrioxacalix[3]arene for Zn2+ and Cd2+
Tetrahedron ( IF 2.1 ) Pub Date : 2016-07-14 02:35:41
Xue-Kai Jiang, Yusuke Ikejiri, Cheng-Cheng Jin, Chong Wu, Jiang-Lin Zhao, Xin-Long Ni, Xi Zeng, Carl Redshaw, Takehiko Yamato

A novel type of selective and sensitive fluorescent sensor having triazole rings as the binding sites on the lower rim of a hexahomotrioxacalix[3]arene scaffold in a cone conformation is reported. This sensor has desirable properties for practical applications, including selectivity for detecting Zn2+ and Cd2+ in the presence of excess competing metal ions at low ion concentration or as a fluorescence enhancement type chemosensor due to the cavity of calixarene changing from a ‘flattened-cone’ to a more-upright form and inhibition of PET. In contrast, the results suggested that receptor 1 is highly sensitive and selective for Cu2+ and Fe3+ as a fluorescence quenching type chemosensor due to the photoinduced electron transfer (PET) or heavy atom effect.

中文翻译:

基于六高三氧杂aca [3]芳烃的Zn2 +和Cd2 +荧光传感器的合成与评价

报道了一种新型的选择性和敏感的荧光传感器,该传感器具有三唑环作为圆锥构象的六高三氧杂acalix [3]芳烃骨架下边缘的结合位点。该传感器具有实用的理想性能,包括在低离子浓度下存在过量竞争金属离子时检测Zn 2+和Cd 2+的选择性,或者由于杯芳烃的腔从“变平”而变为荧光增强型化学传感器。 -锥形”以形成更直立的形式并抑制PET。相反,结果表明受体1对Cu 2+和Fe 3+具有高度的敏感性和选择性。 由于光诱导电子转移(PET)或重原子效应,可作为荧光猝灭型化学传感器。
更新日期:2016-07-14
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