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首页> 外文期刊>RSC Advances >A turn-on fluorescent sensor for relay recognition of two ions: from a F--selective sensor to highly Zn2+-selective sensor by tuning electronic effects
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A turn-on fluorescent sensor for relay recognition of two ions: from a F--selective sensor to highly Zn2+-selective sensor by tuning electronic effects

机译：开启式荧光传感器，用于继电器识别两个离子：通过调节电子效应，从F选择性传感器到高Zn2 +选择性传感器

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摘要

A simple ion sensor bearing quinoline and an amide group was designed and synthesized, which showed both colorimetric detection for F- and a fluorescence turn-on response for Zn2+. Moreover, sensor L2 can distinguish F- and Zn2+ via different sensing mechanisms (deprotonation for F-; inhibition of photoinduced electron transfer (PET) and excited-state intramolecular proton transfer (ESIPT) for Zn2+). Meanwhile the distinct color change and the rapid enhancement of fluorescence emission provide naked eye detection. This sensor achieved the detection of two ions which does not need to rely on two different probes: utilization of the innate reactivity of only one probe could achieve a dual recognition purpose in a tandem fashion.
机译：设计并合成了一个带有喹啉和酰胺基团的简单离子传感器，该传感器既显示了F-的比色检测，又显示了Zn2 +的荧光开启响应。此外，传感器L2可以通过不同的传感机制（F-去质子化;抑制Zn2 +的光致电子转移（PET）和激发态分子内质子转移（ESIPT））来区分F-和Zn2 +。同时，明显的颜色变化和荧光发射的快速增强提供了肉眼检测。该传感器实现了对两个离子的检测，而无需依赖两个不同的探针：仅使用一个探针的先天反应性就可以串联实现双重识别的目的。

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