Cleft-type imidazoliums for sensing of sulfate and polyphosphate anions with AIE emission
Cleft-type imidazoliums for sensing of sulfate and polyphosphate anions with AIE emission
复制标题
用于通过 AIE 发射感应硫酸根和多磷酸根阴离子的裂隙型咪唑鎓
DOI：
10.1016/j.dyepig.2020.108553
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发表时间：
2020-10-01
影响因子：
4.5
通讯作者：
Cao, Qian-Yong
中科院分区：
文献类型：
--
作者：
Huang, Ling-Xi;Bai, Hai-Ying;Cao, Qian-Yong
设计并合成了两种通过 1,2-苯基 (1) 或 1,2-苯基甲基 (2) 间隔基连接的新型四苯乙烯 (TPE) 附加裂缝型咪唑鎓，用于阴离子识别。在水溶液中，探针1可以识别SO42-和多磷酸盐（PPi、ADP和ATP）阴离子，顺序为ATP>SO42-，类似于PPi>ADP，其中基于TPE的荧光团提供了很大的荧光增强以增加聚集。相比之下，具有相对柔性接头的探针2仅对多磷酸根阴离子ATP、PPi和ADP有反应。此外，探针 1 显示出比 2 更高的阴离子结合亲和力，这归因于更刚性的框架特征。此外，探针 1 还应用于活细胞和秀丽隐杆线虫中 ATP 和 SO42- 水平的成像。
Two novel tetraphenylethylene (TPE) appended cleft-type imidazoliums linked through 1,2-phenyl (1) or 1,2-phenylmethyl (2) spacer were designed and synthesized for anion recognition. In aqueous solution, probe 1 can recognize SO42- and polyphosphate (PPi, ADP, and ATP) anions in the order of ATP > SO42- similar to PPi > ADP, in which the TPE-based flumphore gives a large fluorescence enhancement for increasing the aggregation. In contrast, probe 2 with a relatively flexible linker only responds toward polyphosphate anions ATP, PPi and ADP. In addition, probe 1 showed a higher anion binding affinity than that of 2, attributing to more rigid frame characteristics. Furthermore, probe 1 was also applied to image ATP and SO42- level in living cells and C. elegans.