Self-healing properties of 1-amino, 2,4-dibromo anthraquinone dye doped in PMMA polymer

TL;DR

This study investigates the self-healing behavior of 2,4-dibromo anthraquinone dye doped in PMMA, revealing recovery after photodegradation and analyzing the process using fluorescence spectroscopy and the correlated chromophore domain model.

Contribution

It provides new insights into the self-healing properties of a specific anthraquinone derivative doped in polymer, including the effects of bromine substitution and the application of the CCrDM model.

Findings

Dye recovers after photodegradation in PMMA.

Self-healing dynamics differ from other anthraquinone derivatives.

Characterization of self-healing using CCrDM parameters.

Abstract

We used fluorescence spectroscopic measurements as a probe to study the self-healing properties of anthraquinone derivative molecules doped in poly(methyl methacrylate) (PMMA). 2,4-dibromo anthraquinone dye doped in PMMA recovers after photodegradation. Its dynamics differs from other anthraquinone derivative molecules. This could be due to the relatively heavier bromine atom attached to one of the carbon atoms of the benzene ring. In this paper, we will discuss the self-healing properties of 2,4-dibromo anthraquinone doped in PMMA matrix. We also tested the correlated chromophore domain model (CCrDM) and have characterized the self-healing properties by determining the CCrDM parameters. We also estimated the self-absorption of fluorescence signal by the dye molecule without which the analysis of the self-recovery of the molecule would be incomplete.