Sensors and Actuators, B: Chemical
Sensors and Actuators, B: Chemical
5 years ago

Cavity-containing rhenium metallacycle treated evanescent wave infrared chemical sensors for the selective determination of odorous amines in the atmosphere

Cavity-containing rhenium metallacycle treated evanescent wave infrared chemical sensors for the selective determination of odorous amines in the atmosphere
An evanescent wave infrared chemical sensor was developed for the selective detection of odorous amino compounds in the atmosphere. To achieve this goal, cavity-containing rhenium metallacycles with multi-recognition sites were prepared and used as host molecules to modify the surface of an evanescent wave infrared (EWIR) sensing element. The unique cavity structure with hydrophobic properties of the Re metallacycle permits the selective trapping of suitably sized compounds with proper functionalities. To explore the scope of the process, two different Re metallacycles were synthesized and used to trap a series of volatile organic compounds (VOCs) with different functionalities. Based on the results, Re metallacycles are selective to detect amino compounds as evidenced by the peak shifts for CO absorption after the amino compounds had been adsorbed. The hydrophobic pocket and hydroxyl groups in the Re metallacycles were also verified to provide extra forces to stabilize the attraction of amino compounds. The efficiency of the Re metallacycles in detecting amino compounds follows the order of amine with phenyl ring > aliphatic primary amine∼cyclo-amine > aliphatic secondary amine > aliphatic tertiary amine. This sensor was applied to detect benzyl amine and a linear range up to 1mg/L could be obtained with a detection limit close to 4μg/L.

Publisher URL: www.sciencedirect.com/science

DOI: S0925400517313308

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.