36. Intermolecular Charge-Transfer Luminescence by Self-Assembly of Pyridinium Luminophores in Solutions

Leduskrasts, K.; Suna, E. ChemistryOpen 2021, 10, 1081-1086. Download publication.

DOI: 10.1002/open.202100191

Abstract

Intermolecular π⁺–π interactions promote self-assembly of individually non-luminescent protonated pyridine luminophores in solution, resulting in intermolecular charge-transfer type emission. The luminescence turn-on by protonation is utilized for the sensing of HCl and sulfonic acids in solution with sensing limits below 1 ppm.