Issue 24, 2021

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

Abstract

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.

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

Supplementary files

Article information

Article type
Paper
Submitted
29 Mar 2021
Accepted
24 May 2021
First published
24 May 2021

Phys. Chem. Chem. Phys., 2021,23, 13760-13767

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

A. Georgiev, D. Yordanov, N. Vassilev, V. Deneva, D. Nedeltcheva, I. Angelov and L. Antonov, Phys. Chem. Chem. Phys., 2021, 23, 13760 DOI: 10.1039/D1CP01378E

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