Detail publikačního výsledku

Acid-base fluorescence switching and aggregation induced emission (AIE) of phenylene-thienyl chalcones

VESELÝ, D.; YORDANOV, D.; VALA, M.; WEITER, M.; KRAJČOVIČ, J.; GEORGIEV, A.

Originální název

Acid-base fluorescence switching and aggregation induced emission (AIE) of phenylene-thienyl chalcones

Anglický název

Acid-base fluorescence switching and aggregation induced emission (AIE) of phenylene-thienyl chalcones

Druh

Článek WoS

Originální abstrakt

This work focuses on preparation and optical characterization of the phenylene-thienyl chalcone derivatives with various terminal groups – amino (3a), hydroxyl (3b) and carboxyl (3c). We were able to selectively manipulate the optical behaviour via these functional groups simply by treatment under acidic/basic conditions. The PLQY of the protonated ammonium salt was boosted to 10 % in comparison with 2 % in the neutral form. On the other hand, deprotonation of the alkoxy and carboxy group led to the formation of a non-emissive anions due to the photoinduced electron transfer process. We also studied the behaviour in the aqueous environment that resulted in the aggregation induced emission effect with a bathochromic shift and improved PLQY for all three chalcone compounds. Finally, only the compound 3c showed a fluorescence in the solid-state with a broad emission band at 576 nm with relatively high PLQY (18.6 %).

Anglický abstrakt

This work focuses on preparation and optical characterization of the phenylene-thienyl chalcone derivatives with various terminal groups – amino (3a), hydroxyl (3b) and carboxyl (3c). We were able to selectively manipulate the optical behaviour via these functional groups simply by treatment under acidic/basic conditions. The PLQY of the protonated ammonium salt was boosted to 10 % in comparison with 2 % in the neutral form. On the other hand, deprotonation of the alkoxy and carboxy group led to the formation of a non-emissive anions due to the photoinduced electron transfer process. We also studied the behaviour in the aqueous environment that resulted in the aggregation induced emission effect with a bathochromic shift and improved PLQY for all three chalcone compounds. Finally, only the compound 3c showed a fluorescence in the solid-state with a broad emission band at 576 nm with relatively high PLQY (18.6 %).

Klíčová slova

Aggregation-induced emission, Chalcones, Fluorescence switching, Acid-base, Photochromism

Klíčová slova v angličtině

Aggregation-induced emission, Chalcones, Fluorescence switching, Acid-base, Photochromism

Autoři

VESELÝ, D.; YORDANOV, D.; VALA, M.; WEITER, M.; KRAJČOVIČ, J.; GEORGIEV, A.

Rok RIV

2025

Vydáno

28.01.2024

Nakladatel

Elsevier

ISSN

1873-3166

Periodikum

Journal of molecular liquids

Svazek

397

Číslo

1

Stát

Nizozemsko

Strany od

1

Strany do

11

Strany počet

11

URL

https://doi.org/10.1016/j.molliq.2024.124119

BibTex

@article{BUT187882,
  author="VESELÝ, D. and YORDANOV, D. and VALA, M. and WEITER, M. and KRAJČOVIČ, J. and GEORGIEV, A.",
  title="Acid-base fluorescence switching and aggregation induced emission (AIE) of phenylene-thienyl chalcones",
  journal="Journal of molecular liquids",
  year="2024",
  volume="397",
  number="1",
  pages="1--11",
  doi="10.1016/j.molliq.2024.124119",
  issn="0167-7322",
  url="https://doi.org/10.1016/j.molliq.2024.124119"
}