Novel block copolymers for multi-agent detection using polymer optical fibers

被引：7

作者：

Athanasekos, Loukas ^{[1
]}

Pispas, Stergios ^{[1
]}

Riziotis, Christos ^{[1
]}

机构：

[1] Natl Hellen Res Fdn, Inst Theoret & Phys Chem, Photon Nanoapplicat Lab, GR-11635 Athens, Greece

来源：

MICRO-STRUCTURED AND SPECIALTY OPTICAL FIBRES | 2012年 / 8426卷

关键词：

Polymer Optical Fibers; Optical Detection; Chemical Sensing; Polymers; Block Copolymers; Photonic Sensors; GAS SENSORS; AMMONIA; ULTRAVIOLET; FILMS;

D O I：

10.1117/12.927086

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel block copolymer material is applied successfully to a low cost Polymer Optical Fiber- POF for sensing applications. The copolymer consists of two blocks, one hydrophilic and sensitive to polar substances and the other hydrophobic and sensitive to hydrocarbons. Prediction of polymer's behavior in the presence of analytes has been successfully verified experimentally. The existence of two different blocks allows for the detection of a wide variety of agents and this response could be further engineered and enhanced by suitable adjusting the ratio of the two blocks. Using methanol as polymer's solvent PMMA POF successfully coated without deteriorating its properties. Functionalized U-bent POFs were employed as sensing tips overcladded with the sensitive material using a simple dip coating technique. Due to material's high transition temperature (well above 120 degrees degC) the overlayers were very stable and environmentally robust. The developed sensors characterized and exhibited very fast response in ammonia, humidity, toluene and benzene, with full operational reversibility.

引用

页数：7

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