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A Selective Optical Sensor for Picric Acid Assay Based on Photopolymerization of 3-(N-methacryloyl) amino-9-ethylcarbazole

A Selective Optical Sensor for Picric Acid Assay Based on Photopolymerization of 3-(N-methacryloyl) amino-9-ethylcarbazole

Yan-Jun Hu, Shu-Zhen Tan, Guo-Li Shen, Ru-Qin Yu

Anal Chim Acta. 2006 Jun 16;570(2):170-5.

PMID: 17723396

Abstract:

A novel optical sensor based on covalent immobilization for picric acid assay has been described. To improve the stability of the sensor, a terminal double bond was attached to the fluorescent compound, 3-amino-9-ethylcarbazole (AEC), via methacryloyl chloride. The resultant compound, 3-(N-methacryloyl) amino-9-ethylcarbazole (MAEC) was copolymerized with 2-hydroxypropyl methacrylate on surface-modified quartz glass plates by UV irradiation. The resulting optical sensor (optode membrane) was used to determine picric acid based on fluorescence quenching. It shows a linear response toward picric acid in the concentration range of 9.33 x 10(-8) to 9.33 x 10(-5) mol l(-1), with rapid response, high stability and good selectivity to picric acid.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP132321	3-Amino-9-ethylcarbazole		132-32-1	Price

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