Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ( IF 4.3 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.saa.2020.118664 Xiaoye Wen 1 , Li Yan 1 , Zhefeng Fan 1
New strategies still need to be proposed that can be used to sense and remove toxic environmental pollutants in a sensing system. In this research, a novel NIR fluorescence sensor 1 was designed and prepared with aggregation induced emission (AIE) property. The fluorescence intensity of the sensor 1 in DMSO/H2O mixed solvent was changed along with the proportion of water. The sensor 1 can be successfully used for real-time detection and removal of Hg2+ in 20% DMSO aqueous solution with high selectivity, quick response and so on. Furthermore it can be efficiently reused and recycled without any loss through Na2S. In addition, the sensor 1 displayed high sensitivity and selectivity to cyanide ions in 1% DMSO aqueous solution with the presence of other interference anions. The sensing mechanism for Hg2+ and cyanide ion was evaluated by 1H NMR spectra, Mass spectrometry. The sensor 1 exhibited low cytotoxicity for biological applications, which was used as an outstanding fluorescent transducer for detection of cyanide ion in living cells. Based on the visible fluorescence change for the sensor 1 to cyanide ion, the measurement was performed for food materials containing cyanide, such as potato, cassava powder and almond. This research provides perspective potential in solving the problem of other pollution and stimulating new thinking for designing of the novel fluorescence materials.
中文翻译:
一种新颖的基于AIE的活性NIR荧光基三苯胺,用于感测Hg2 +和CN-及其多种应用。
仍然需要提出可以用于感测和去除感测系统中的有毒环境污染物的新策略。在这项研究中,设计并制备了具有聚集诱导发射(AIE)特性的新型NIR荧光传感器1。传感器1在DMSO / H 2 O混合溶剂中的荧光强度随水的比例而变化。传感器1具有高选择性,快速响应等特点,可以成功用于20%DMSO水溶液中Hg 2+的实时检测和去除。此外,它可以有效地重复利用和循环利用,而不会因Na 2造成任何损失另外,在存在其他干扰阴离子的情况下,传感器1对1%DMSO水溶液中的氰化物离子显示出高灵敏度和选择性。Hg 2+和氰化物离子的感测机理通过1 H NMR光谱,质谱进行了评价。传感器1对于生物应用显示出低的细胞毒性,它被用作检测活细胞中氰化物离子的出色荧光传感器。基于传感器1的可见荧光变化为氰化物离子,对包含氰化物的食品材料(例如土豆,木薯粉和杏仁)进行了测量。这项研究为解决其他污染问题和激发新颖的荧光材料设计提供了新的思路。