A highly sensitive multifunctional sensor based on phenylene-acetylene for colorimetric detection of Fe2+ and ratiometric fluorescent detection of Cd2+ and Zn2+

作者：Zhang, Yuan-Yuan; Chen, Xiang-Zhu; Liu, Xing-Yue; Wang, Mian; Liu, Jing-Jing; Gao, Gui; Zhang, Xue-Yan; Sun, Run-Ze; Hou, Shi-Cong^*; Wang, Hong-Mei^*

来源：Sensors and Actuators B: Chemical , 2018, 273: 1077-1084.

DOI：10.1016/j.snb.2018.07.012

• Multifunctional sensors
• Iron (II) ion
• Zinc ion
• Cadmium ion
• Water samples
• Test paper

A new multifunctional sensor (L1) based on phenylene-acetylene was designed and synthesized. L1 showed an excellently colorimetric response toward Fe2+ with a detection limit of 2.0X10(-8) M. This result indicated that L1 can sensitive detect Fe2+ by "naked eye" and discriminate iron types in different oxidative states. Simultaneously, L1 can ratiometric fluorescent detection of Cd2+ and Zn2+ with detection limits of 2.62X10(-8)M and 2.03X10(-9) M, respectively. L1 can distinguish Cd2+ and Zn2+ according to differently emissive colours, after addition of Cd2+ and Zn2+ to the blue emissive solution of L1, cyan and yellow-green fluorescence emission were observed, respectively. The binding modes of L1 with Fe2+, Cd2+ and Zn2+ were evidenced by H-1 NMR, Job's plot and ESI-MS. Water samples and On-site WA paper experiments for detecting Fe2+, Cd2+ and Zn2+ were successfully implemented for practical application in environment

• 出版日期2018-11-10
• 单位中国农业大学