Phosphorescence enhancement of pyridinium macrocycles by poly(vinylalcohol).

Authors :: Zhang ZY
Deng CY
Shen CC
Xu RY
Wang XZ
Wang YH
Ding B
Li B
Li J
Li C
Source :: Chemical communications (Cambridge, England) [Chem Commun (Camb)] 2023 Sep 19; Vol. 59 (75), pp. 11248-11251. Date of Electronic Publication: 2023 Sep 19.
Publication Year :: 2023
Abstract: A phosphorescence enhancement of pyridinium macrocycle/monomer phosphors is realized with up to 14.7-fold prolonging of the phosphorescence lifetimes and visible afterglow by doping into a poly(vinylalcohol) (PVA) matrix. The abundant hydrogen-bonding interactions and electrostatic interactions between the phosphors and the PVA suppressed the nonradiative decay processes, slowed down the radiative decay and nonradiative decay of triplet states, and therefore promoted the long-lived RTP.