A selective optical chemical sensor for 2,6-dinitrophenol based on fluorescence quenching of a novel functional polymer
文献类型：会议论文
| 作者 | Wang, Xu; Zeng, Hulie; Zhao, Lixia; Lin, Jin-Ming |
| 出版日期 | 2006 |
| 会议名称 | China/Japan/Korea Environmental Analytical Chemistry Symposium |
| 会议日期 | SEP 01-03, 2005 |
| 会议地点 | Chiba, JAPAN |
| 关键词 | optical chemical sensor 2 fluorescence quenching functional polymer 6-dinitrophenol |
| 英文摘要 | A bifurcated optical fiber based chemical sensor for continuous monitoring of 2,6-dinitrophenol (2,6-DNP) has been proposed based on the reversible chemical reaction between a novel functional poly(vinyl chloride) (PVC) as the sensing material and the analytes. The functional PVC (FPVC), containing a fluorescent curcumin moiety, was synthesized by the nucleophilic substitution of a fraction of the chlorine atoms bound to the PVC backbone by curcumin. When plasticized in a membrane of 5 mu m thickness, FPVC extracts 2,6-DNP from aqueous solution into the bulk membrane phase and reacts with the analyte to form a complex with low fluorescence efficiency through hydrogen bonding. Formation of the complex gave a significant fluorescence quenching which is suitable for signalling the occurrence of the host-guest interaction. At pH 3.50, the sensor exhibits a dynamic detection range from 2.5 x 10(-6) to 7.0 x 10(-3) mol L-1 with a limit of detection of 1.0 x 10(-6) mol L-1. As 2,6-DNP can provide an optimal space geometry matches to the formation of hydrogen bonds, the sensor shows excellent selectivity for 2,6-DNP over other nitrophenols. The forward and reverse response time (t(95)) of the sensor both was within 1 min. The repeatability, reproducibility, and lifetime of the sensor were also satisfied. The sensor was applied to determine 2,6-DNP in water samples successfully. (c) 2006 Elsevier B.V. All rights reserved. |
| ISSN号 | 0039-9140 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24741]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Xu,Zeng, Hulie,Zhao, Lixia,et al. A selective optical chemical sensor for 2,6-dinitrophenol based on fluorescence quenching of a novel functional polymer[C]. 见:China/Japan/Korea Environmental Analytical Chemistry Symposium. Chiba, JAPAN. SEP 01-03, 2005. |
入库方式： OAI收割
来源：生态环境研究中心
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