A single isomer rotary switch demonstrating anti-Kasha behaviour: Does acidity function matter?

Autor: Georgiev A; Department of Organic Chemistry, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria., Yordanov D, Vassilev N, Deneva V, Nedeltcheva D, Angelov I, Antonov L
Jazyk: angličtina
Zdroj: Physical chemistry chemical physics : PCCP [Phys Chem Chem Phys] 2021 Jun 28; Vol. 23 (24), pp. 13760-13767. Date of Electronic Publication: 2021 Jun 15.
DOI: 10.1039/d1cp01378e
Abstrakt: A novel rotary switch, overcoming the disadvantages of hydrazone based switches with competitive proton acceptor sub-rotors, has been designed. The new compound contains a pyridyl ring and a COOH group as sub-rotors, which provides engagement of the pyridyl nitrogen atom and leads to the existence of a single isomer in the ground state. The availability of acidic functionality in the rotor creates conditions for excited state intramolecular proton transfer (ESIPT), which exhibits anti-Kasha behavior.
Databáze: MEDLINE