Published September 19, 2023 | Version v1
Poster Open

Poster on 'Reactivity of atmospheric radicals with functionalised surfaces' for E-MRS 2023 Fall Meeting

  • 1. University of York
  • 2. National Technical University of Athens

Description

Currently, detecting radicals is complex, cumbersome and expensive. Only a few labs worldwide can detect radicals. RADICAL is developing a break-through way of detecting radicals with a small, low-cost electronic sensor that can be deployed globally. Self-assembled monolayers (SAMs) are going to be used to functionalise the sensor surface for enabling the detection of specific gas phase molecules.

Conclusions: Plasma mas been used to generate OH radicals at a reasonable concentration for reacting with monolayers on glass slides. A library of organic molecules have been exposed to OH radicals and their rates of decay have been monitored by contact angle analysis.

Most molecules gave a similar rate of decay upon exposure to OH radicals. Only the perfluoro alkane chains gave a slower rate of decay. This result has been supported by the DFT calculations. Pyrenemethylamine has been used as a fluorescent probe and has shown the presence of carbonyl group after alkane chains have been exposed to plasma.

The fluorescence technique will be used to quantify the oxygen-containing functional groups after exposure to plasma and will be used to complement the kinetics study with contact angle analysis.

Notes

Amy Wolstenholme-Hogg submitted this poster for the European Materials Research Society E-MRS Fall Meeting 2023. RADICAL represents a 'Fundamental Breakthrough in Detection of Atmospheric Free Radicals'. Find out more on the RADICAL project website: radical-air.eu The RADICAL project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement number 899282.

Files

poster_Warsaw_final_sept23.pdf

Files (2.9 MB)

Name Size Download all
md5:667ba2bea64b8c996c9f871d33440c4d
2.9 MB Preview Download

Additional details

Funding

RADICAL – Fundamental Breakthrough in Detection of Atmospheric Free Radicals 899282
European Commission