Publikace detail

2,4-Distyryl and 2,4,6-Tristyrylpyrimidines: Synthesis and Optical Properties.

Autoři: Fecková Michaela | Achelle Sylvain | Robin-le Guen Françoise | le Poul Pascal | Bureš Filip

Rok: 2019

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	2,4-Distyryl and 2,4,6-Tristyrylpyrimidines: Synthesis and Optical Properties.	A synthetic pathway leading to the equally or differently substituted 2,4-di and 2,4,6-tristyrylpyrimidines was described. By combination of Suzuki-Miyaura cross coupling reaction and Knoevenagel condensation twenty new tristyrylpyrimidines and three new distyrylpyrimidines were prepared. Pyrimidine (1,3-diazine) as a six-membered heterocycle with two nitrogen atoms exhibits a strong electron-withdrawing character and therefore connection with electron-donating groups via pi-conjugated bridge leads to intramolecular charge transfer and as it is also well-known to strong emission. Optical properties of final compounds were studied by UV-Vis absorption and emission spectroscopy as well as their electronic properties by DFT and TD-DFT calculations. The influence of electron-donating and electron-withdrawing groups on each arm and comparison of results with 4,6-distyrylpyrimidines analogues, previously prepared in our research group, are shown.	Distyrylpyrimidines; Tristyrylpyrimidines; optical properties

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