| Title |
Thianthrene-based compounds for oxygen sensing applications / |
| Authors |
Dvylys, Lukas ; Keruckienė, Rasa ; Gužauskas, Matas ; Ghasemi, Melika ; Gražulevičius, Juozas Vidas |
| DOI |
10.15388/Proceedings.2024.46 |
| ISBN |
9786090710517 |
| Full Text |
|
| Is Part of |
Open readings 2024: the 67th international conference for students of physics and natural sciences: book of abstracts / editors: M. Keršys, R. Naina, V. Adomaitis, E. Maskvytis.. Vilnius : Vilnius University press, 2024. p. 272.. ISBN 9786090710517 |
| Abstract [eng] |
Room temperature phosphorescence (RTP) is a phenomenon where certain materials emit light at ambient temperatures, with a delay after the removal of the excitation source [1]. Unlike fluorescence, which has rapid nanosecond lifetimes, RTP involves the transition of excited molecules to long-lived triplet states lasting milliseconds to seconds [2]. RTP exhibits intensity differences between air and oxygen-free environments, indicating the involvement of oxygen-sensitive triplets [1]. Organic compounds used in oxygen sensing have crucial roles in analytical chemistry and sensor technology, showcasing unique optical or electrochemical properties that modulate in the presence of oxygen. These compounds are utilized for their sensitivity to oxygen concentration changes, leading to alterations in emission characteristics [3]. The implementation of these sophisticated organic materials in sensing platforms contributes to advancements in fields such as environmental monitoring, biotechnology, and medical diagnostics, facilitating precise and real-time detection of oxygen levels in diverse applications [4]. Thianthrene and its derivatives have garnered significant attention in recent years for their promising potential as effective materials in oxygen sensing applications [5]. Thianthrene derivatives possess a conjugated molecular structure that facilitates efficient intersystem crossing, a crucial process for phosphorescence. The presence of sulfur atoms in the thianthrene molecule contributes to enhanced spin-orbit coupling, which promotes efficient triplet state formation. The rigidity of the molecular structure and the extended conjugation in thianthrene derivatives further stabilize the triplet state, allowing for extended phosphorescence lifetimes at room temperature [5]. In this work, two thianthrene-based compounds with different electron acceptors were synthesized. Their thermal, electrochemical, and photophysical properties will be presented. |
| Published |
Vilnius : Vilnius University press, 2024 |
| Type |
Conference paper |
| Language |
English |
| Publication date |
2024 |
| CC license |
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