Citation: Hong-Xing Zhang, Ren-Bo Wei, Chuan-Zhi Chen, Xin-Lin Tuo, Xiao-Gong Wang. A novel fluorescent epoxy resin for organophosphate pesticide detection[J]. Chinese Chemical Letters, ;2015, 26(1): 39-42. doi: 10.1016/j.cclet.2014.10.014 shu

A novel fluorescent epoxy resin for organophosphate pesticide detection

1.
a Department of Chemical Engineering, Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing 100084, China;
2.
b Department of Chemical Defense, Institute of Chemical Defense, Beijing 102205, China

Corresponding author: Xiao-Gong Wang,
Received Date: 18 August 2014
Available Online: 29 September 2014
Fund Project: Financial supports from the Research Foundation of the General Armament Department (No. 2008 CD 012) are gratefully acknowledged. (No. 2008 CD 012)

In this work, a novel bisbenzimidazolylpyridine-functionalized fluorescent epoxy resin was synthesized for organophosphate pesticide detection. The epoxy resin was characterized by Fourier-transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance spectroscopy (¹H NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and fluorescence spectroscopy. After loading with Eu(Ⅲ) ions, the epoxy resin showed a strong fluorescence emission. The fluorescence emission was observed to be instantaneously quenched when exposed to trace amount of diethyl chlorophosphate in solution. The Stern-Volmer quenching constants K_sv for quenching at 617 nm was determined to be 0.377×10³ L/mol. This sensitive emission-quenching function and easy processing nature of the polymeric support enable the resin to be a promising chemosensor candidate for the detection of organophosphates.
- MeBIP,
- Epoxy resin,
- Europium complex,
- Fluorescence quenching,
- Organophosphates
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沈阳化工大学材料科学与工程学院沈阳 110142