Wang Lingyun, Fang Guipo, Cao Derong
School of Chemistry and Chemical Engineering, South China University of Technology, 510640, Guangzhou, China,
J Fluoresc. 2014 Nov;24(6):1757-66. doi: 10.1007/s10895-014-1464-2. Epub 2014 Sep 26.
A novel BODIPY-based probe 1 was designed and synthesized as a selective fluorescent and colorimetric chemosensor for fluoride. The spectral responses of 1 to fluoride in acetonitrile were studied: an approximately 118 nm red shift in absorption and 'turn-off' emission response was observed. The striking pink to indigo change in ambient light was thought to be due to the deprotonation of the phenol moiety by way of O-H · · · F hydrogen bonding interactions. Interestingly, when the nonfluorescent 1-F(-) solution treated with trifluoroacetic acid (TFA) resulted in color change from indigo to pink and a significant enhancement of fluorescence intensity (10-fold). Furthermore, the reversibility and reusability of probe 1 for the detection of F(-) ion was tested for four cycles indicating the probe 1 could be used in reversible manner.
设计并合成了一种基于BODIPY的新型探针1，作为一种用于氟化物的选择性荧光和比色化学传感器。研究了1在乙腈中对氟化物的光谱响应：观察到吸收光谱有大约118 nm的红移和“关闭”发射响应。环境光下从醒目的粉红色到靛蓝色的变化被认为是由于酚部分通过O-H····F氢键相互作用发生去质子化所致。有趣的是，用三氟乙酸（TFA）处理非荧光的1-F(-)溶液时，颜色从靛蓝色变为粉红色，荧光强度显著增强（10倍）。此外，对探针1检测F(-)离子的可逆性和可重复使用性进行了四个循环的测试，表明探针1可以以可逆方式使用。
