Novel 4,5-diazafluorene-based Schiff base derivatives as Al3+ ions fluorescence turn-on sensors

作者：Zhang, Shu Jiang^*; Li, Hui; Gong, Chen Liang; Wang, Jian Zhi; Wu, Zhong Ying; Wang, Feng^*

来源：Synthetic Metals, 2016, 217: 37-42.

DOI：10.1016/j.synthmet.2016.03.003

• Fluorescent sensor
• Al3+ ion
• Schiff base
• Turn-on

A new 4,5-diazafluorene-based fluorescent chemosensor has been synthesized by Schiff base condensation of 9,9-bis(3-methyl-4-aminophenyl)-4,5-diazafluorene with salicylaldehyde. The interaction of Schiff base with different metal ions has been studied over UV-vis absorption spectra and photofluorescent spectra. The results were indicated that Schiff base exhibited turn-on fluorescent behavior with Al3+ ions in ethanol. Such fluorescent responses could be detected by naked eye under UV-lamp. The limit of detection was calculated to be 4.2 ppm by titration method.

• 单位
  兰州大学; 武汉工程大学