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Citation: XU Di, GAO Baojiao, CHEN Pinghong. Preparation and Characterization of Polystyrene Containing Bidentate Schiff Base Ligand on Side Chain and Preliminary Exploration of Fluorescence Emission Property of Its Eu(Ⅲ) Complexes[J]. Chinese Journal of Applied Chemistry, ;2015, 32(2): 183-191. doi: 10.11944/j.issn.1000-0518.2015.02.140176 shu

Preparation and Characterization of Polystyrene Containing Bidentate Schiff Base Ligand on Side Chain and Preliminary Exploration of Fluorescence Emission Property of Its Eu(Ⅲ) Complexes

1.
Department of Chemical Engineering, North University of China, Taiyuan 030051, China

Corresponding author: GAO Baojiao,
Received Date: 12 May 2014
Available Online: 26 June 2014
Fund Project: 山西省自然科学基金资助项目(201002100843) (201002100843)

Chloromethylated Polystyrene (CMPS) was first prepared with 1,4-bis (chloromethoxy) butane (BCMB) as the chloromethylation reagent. Then nucleophilic substitution between CMPS and phydroxybenzaldehyde(HBA) was conducted,resulting in benzaldehyde(BA) modified polystyrene(PS-BA) on its side chain. Finally,a reaction between 3-aminopyridine(AP) and the aldehyde group of PS-BA was allowed to form Schiff base functionalized polystyrene PS-SB. The chemical structure of PS-SB was characterized by FTIR and ¹H NMR spectra. PS-SB as the first ligand and phenanthroline (Phen) as the second ligand,binary and ternary polymer-rare earth complexes,PS-(SB)₃-Eu(Ⅲ) and PS-(SB)₃-Eu(Ⅲ)-(Phen),were prepared,respectively. The florescence emission properties of the two complexes were preliminarily explored. The experimental results show that the rate of the nucleophilic substitution reaction between CMPS and HBA has a mechanism of S_N 1. For the nucleophilic substitution reaction,N,Ndimethylacetamide(DMAC) with stronger polarity is a suitable solvent,and the temperature of 80℃ is appropriate. The macromolecular ligand PS-SB can produce obvious sensitization for the fluorescence emission of Eu(Ⅲ) ion,and both the binary and ternary complexes emit stronger characteristic fluorescence of Eu(Ⅲ) ion.
- polystyrene,
- polymer-rare earth complex,
- p-hydroxybenzaldehyde,
- aminopyridine,
- bidentate,
- Schiff base ligand
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