Document Type

Paper- Restricted to Campus Access

Publication Date

4-27-2020

Faculty Mentor

Ryan Walvoord

Abstract

Triazines are a group of nitrogen-containing heterocycles, common in pesticides. The run-off of excess pesticides can have major negative impacts on the surrounding environment. Developing probes for these molecules allows for easy and cheap detection of these toxic compounds. Photo induced electron transfer (PET) probes are fluorophores that are 'turned on' when interactions with target molecules adjust the energy levels of the HOMO within the fluorophore inhibiting electronic quenching within the fluorophore. A catalog of characterized fluorophores will allow for a selection of probes with varying accessories tailored for specific triazine molecules. Oxygen and sulfur based fluorophores appear to be species that are reactive with triazine molecules, and have electronics that can be adjusted for higher selectivity. Two sulfur fluorophores, a sulfide and a thioester, have been synthesized and tested for their ability to fluoresce when in the presence of oxidizing agents. The synthesis of different acylated fluorophore compounds have been proposed and more experimentation is needed to gather data on the fluorescence.

Comments

Presented as part of the Ursinus College Celebration of Student Achievement (CoSA) held April 23 – April 30, 2020.

The downloadable file is a poster presentation with recorded audio commentary.

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