A photonic crystal material for the online detection of nonpolar hydrocarbon vapors

Beilstein Journal of Nanotechnology

article

Evgenii S. Bolshakov¹  Aleksander V. Ivanov¹  Andrei A. Kozlov³  Anton S. Aksenov³  Elena V. Isanbaeva¹  Sergei E. Kushnir¹  Aleksei D. Yapryntsev²  Aleksander E. Baranchikov²  Yury A. Zolotov¹ 

[1] Department of Chemistry, Lomonosov Moscow State University;Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences;Institute of Fine Chemical Technologies, Russian Technological University Moscow;Department of Materials Science, Lomonosov Moscow State University

关键词: diffuse reflectance spectroscopy;    photonic crystal sensor;    stimuli-responsive materials;   

DOI  :  10.3762/bjnano.13.9

学科分类：环境监测和分析

来源: Beilstein - Institut zur Foerderung der Chemischen Wissenschaften

【 摘 要 】

A modern level of nanotechnology allows us to create conceptually new test systems for chemical analyses and to develop sensitive and compact sensors for various types of substances. However, at present, there are very few commercially available compact sensors for the determination of toxic and carcinogenic substances, such as organic solvents that are used in some construction materials. This article contains an overview of how 3D photonic crystals are used for the creation of a new test system for nonpolar organic solvents. The morphology and structural parameters of the photonic crystals, based upon a crystalline colloidal array with a sensing matrix of polydimethylsiloxane, have been determined by using scanning electron microscopy and by the results of specular reflectance spectroscopy based on the Bragg–Snell law. A new approach has been proposed for the application of this sensor in chemical analysis for the qualitative detection of saturated vapors of volatile organic compounds due to configuration changes of the photonic bandgap, recorded by diffuse reflectance spectroscopy. The exposure of the sensor to aromatic (benzene, toluene and p-xylene) and aliphatic (n-pentane, n-heptane, n-octane and n-decane) hydrocarbons has been analyzed. The reconstitution of spectral parameters of the sensor during the periodic detection of saturated vapors of toluene has been evaluated.

【 授权许可】

CC BY