Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (7): 1352.doi: 10.7503/cjcu20180873

• Article: Inorganic Chemistry • Previous Articles     Next Articles

Photoluminescence Property of Layered Double Hydroxide Composite with Fluorescein and Detection Towards Fe3+

LIANG Zupei1, SU Feifei2, GUO Rong2, TANG Yuyao2, JIN Shuo2, YU Zihuan2, LI Jian1,*(), MA Shulan2,*()   

  1. 1. Chemistry & Chemical and Environmental Engineering College, Weifang University, Weifang 261061, China
    2. College of Chemistry, Beijing Normal University, Beijing 100875, China
  • Received:2018-12-28 Online:2019-07-10 Published:2019-07-12
  • Contact: LI Jian,MA Shulan;
  • Supported by:
    † Supported by the Natural Science Foundation of Shandong Province, China(No.ZR2015BL024), the National Natural Science Foundation of China(No. U1832152) and the Natural Science Foundation of Beijing, China(No. 2182029).


FLN/OS-LDH composite(FLN is fluorescein, OS is 1-octane sulfonic acid sodium, and LDH is MgAl layered double hydroxide) was synthesized via ion-exchange method and the photoluminescence and detection for Fe(Ⅲ) was tested. In solid state, the FLN/OS-LDH composite displayed yellowish green emission(565 nm) arising from organic FLN. In formamide(FM), the FLN/OS-LDH can be feasily delaminated into colloidal suspention, and showed blue-shifted green emission(ca. 531 nm). The recognition ability of the FLN/OS-LDH for metal cations was researched. The delaminated FLN/OS-LDH colloid in formamide exhibited high selectivity for Fe3+ over other ions(Mg2+, Ni2+, Co2+, Cu2+, Zn2+, Mn2+, Pb2+, Cd2+, and Hg2+) with obvious fluorescence quenching, which can work as a kind of effective fluorescence sensor for detection of Fe3+. The detection limit of Fe3+ is determined to be 1.27×10-7 mol/L and the quenching constant(Ksv) is 3.44×102 L/mol.

Key words: Fluorescein, Layered double hydroxide(LDH), Fluorescence chemosensor, Detection of Fe3+

CLC Number: