A supramolecular self-assembly host-guest system from cyclodextrin as an absolute water-soluble fluorescence sensor for aluminium ions: synthesis, characterization and sensing activity

作者：Liu, Zengchen^*; Ren, Kai; Chen, Yahong; Li, Yanxia; Xie, Jianping; Ding, Yongjie; Li, Lili; Li, Ke; Zhu, Wenping; Yang, Weijie; Xu, Zhihong

来源：RSC Advances, 2017, 7(61): 38160-38165.

DOI：10.1039/c7ra06915d

• BETA-CYCLODEXTRIN
• GOLD NANORODS
• METAL-IONS
• ALZHEIMERS-DISEASE
• POLYMER
• SIZE
• MORPHOLOGY
• VESICLES
• HYDROGEL
• COMPLEX

In the study, an organic molecule derived from paeonol and anthraniloyl hydrazine (L) was synthesized via a Schiff-base reaction. Moreover, a host-guest system composed of TEPA-beta-CD and L was self-assembled via supramolecular interactions. The organic molecule and host-guest system were characterized via NMR, HRMS, IR, and SEM. In addition, the internal structure of the system was clearly observed via HRTEM. The host-guest system exhibited absolute water-solubility. Via the fluorescence behavior toward several metal ions in aqueous media without organic solvents (pH = 7.2), the host-guest system showed high selectivity toward Al3+ over other commonly coexistent metal ions. Therefore, this host-guest system can be used as a fluorescence sensor for aluminium ions in aqueous media. Moreover, a large binding constant (5.84 x 10(4) M-1) between the sensor and Al3+ was calculated via a fluorescent titration experiment. Additionally, the absolute water-solubility activity effectively enhanced the application value of the host-guest system for tracking and detection of Al3+.

• 出版日期2017
• 单位周口师范学院; 许昌学院