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Citation: WANG Mingjuan, GAO Baojiao, DU Junmei. Preparation of Naphthoic Acid-functionalized Polysulfone and Preliminary Exploration of Fluorescence Emission of Formed Polymer-Rare Earth Eu(Ⅲ) Complexes[J]. Chinese Journal of Applied Chemistry, ;2013, 30(3): 283-289. doi: 10.3724/SP.J.1095.2013.20179 shu

Preparation of Naphthoic Acid-functionalized Polysulfone and Preliminary Exploration of Fluorescence Emission of Formed Polymer-Rare Earth Eu(Ⅲ) Complexes

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

Received Date: 2 May 2012
Revised Date: 26 June 2012

Chloromethylation reaction of polysulfone(PSF) was performed with 1,4-bis(chloromethoxy)butane(BCMB) as chloromethylation reagent,leading to the formation of chloromethylated polysulfone(CMPSF).Subsequently,the nucleophilic substitution reaction between the chloromethyl group of CMPSF and phenolic hydroxyl group of 6-hydroxy-2-naphthoic acid(HNA) was performed,and the ligand of naphthoic acid(NA) was bonded on the side chains of polysulfone,resulting in naphthoic acid-functionalized polysulfone NAPSF.The chemical structure of NAPSF was characterized by FTIR and ¹H NMR spectroscopies.The effects of the main factors on the nucleophilic substitution reaction between CMPSF and HNA were examined,the reaction mechanism was investigated,and the reaction conditions were optimized.Results show that the rate of the nucleophilic substitution reaction is independent of the concentration of the nucleophile HNA,indicating that this is a typical unimolecular nucleophilic substitution reaction,i.e.,S_N1.The solvent polarity is favorable for the cleavage of C-Cl bond of the benzyl chloride group,and can accelerate the substitution reaction.Therefore,dimethylsulfoxide(DMSO) with stronger polarity is a suitable solvent.Under the suitable conditions,the conversion of chloromethyl group of CMPSF can reach 96%,and the corresponding bonding degree of NA is 1.68 mmol/g.The coordination reaction between NAPSF and Eu³⁺ ion was carried out for preparing the polymer-rare earth complex of NAPSF-Eu(Ⅲ),which exhibited the characteristic fluorescence emission spectrum of Eu³⁺ ion.More significantly,the macromolecular ligand NAPSF can strongly sensitize the fluorescence-emission of Eu³⁺ ion.
- polysulfone,
- hydroxynaphthoic acid,
- nucleophilic substitution,
- polymer-rare earth complex,
- sensibilization
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Preparation of Naphthoic Acid-functionalized Polysulfone and Preliminary Exploration of Fluorescence Emission of Formed Polymer-Rare Earth Eu(Ⅲ) Complexes

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com