An ICT colorimetric chemosensor and a non-ICT fluorescent chemosensor for the detection copper ion

作者：Gao Wei; Yang Yutao; Huo Fangjun^*; Yin Caixia; Xu Ming; Zhang Yongbin; Chao Jianbin; Jin Shuo; Zhang Shuping

来源：Sensors and Actuators B: Chemical , 2014, 193: 294-300.

DOI：10.1016/j.snb.2013.11.078

• ICT
• Copper ions
• Colorimetric
• Fluorescent
• Chemosensors
• Bioimaging

Two new salicylaldehydes derivatives, 5-fluoro-2-hydroxybenzaldehyde and 9-formyl-8-hydroxyjulolidine, were reacted with rhodamine hydrazine. The products were characterized by electrospray ionization mass spectrometry, nuclear magnetic resonance spectroscopy and X-ray single crystal diffraction. The optical properties of the compounds were investigated in a methanol-4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid solution. 5-Fluoro-2-hydroxybenzaldehyde rhodamine hydrazone (compound 1) was selective toward Cu2+ as shown by a colorless to yellow color change. This was characterized by UV-vis spectroscopy and can be used for the visual detection of Cu2+. The selectivity of 9-formy1-8-hydroxyjulolidine rhodamine hydrazone (compound 2) toward Cu2+ was determined by changes in UV-vis and emission spectra. The results show that compound 2 as a fluorescence probe is more sensitive than compound 1 as a UV-vis probe. Furthermore, compound 2 can be used for bioimaging.

• 出版日期2014-3
• 单位中国科学院长春应用化学研究所; 长治学院; 山西大学