TICT-ICT state change mechanism based acetate fluorescent sensor act as an "Off-On-Off" switch and logic gate
TICT-ICT state change mechanism based acetate fluorescent sensor act as an "Off-On-Off" switch and logic gate
复制标题
基于 TICT 状态变化机制的醋酸盐荧光传感器充当“关”“开”“关”开关和逻辑门
DOI：
10.1016/j.snb.2013.09.004
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发表时间：
2014-01-01
影响因子：
8.4
通讯作者：
Zhang, You-Ming
中科院分区：
文献类型：
--
作者：
Lin, Qi;Liu, Xin;Zhang, You-Ming
设计并合成了一种基于TICT-ICT状态转换机制的新型传感器LX。传感器LX不仅可以作为一个异或非（XNOR）逻辑门，而且还可以作为一个由AcO-和H+离子触发的“关-开-关”分子开关。通过双氢键与Y型AcO-选择性结合，传感器LX经历了TICT-ICT状态变化，并诱导了显著的荧光响应。H+的加入使LX-AcO-的荧光强度降低。这种“关-开-关”开关可以通过AcO-和H+循环控制。同时，LX传感器对非水溶液和水溶液（含水量为10%）中的AcO-具有特异的选择性和较高的灵敏度，不受其它共存竞争性阴离子（F-、Cl-、Br-、I-、AcO-、H2 PO 4-、HSO 4-、ClO 4-、CN-、S2-、HSO 3-、柠檬酸根）的干扰。检测限为4.0 × 10 ~（-7）M的AcO ~-，这对于检测许多化学和生物体系中的AcO ~-离子来说是相当低的。皇冠版权所有（C）2013由爱思唯尔B. V.出版保留所有权利。
A novel sensor LX based on the TICT-ICT state change mechanism has been designed and synthesized. The sensor LX can perform as not only an exclusive-NOR (XNOR) logic gate but also an "Off-On-Off" molecular switch triggered by AcO- and H+ ions. By selectivity binding with Y-shape AcO- via double hydrogen bonds, the sensor LX underwent a TICT-ICT state change and induced a dramatic fluorescent response. However, the addition of H+ results in the fluorescence decreasing of LX-AcO-. This "Off-On-Off" switch could be controlled via AcO-and H+ cyclically. Moreover, the sensor LX could instantly detect AcO- in non-aqueous and aqueous solution (water content = 10%) with specific selectivity and high sensitivity, these sense procedures could not interfered by other coexistent competitive anions (F-, Cl-, Br-, I-, AcO-, H2PO4-, HSO4-, ClO4-, CN-, S2-, HSO3-, citrate). The detection limits was 4.0 x 10(-7)M of AcO-, which is quite low for the detection of AcO-ions found in many chemical and biological systems. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.