DYOTROPIC REARRANGEMENT OF DIARYLETHENES

The analysis of the reaction of dyotropic rearrangement of diarylethenes, which limits the fatigue resistant of this class of photochromic compounds, has been carried out.

Investigating Photochromic Behavior of Organic Dyes in Solution Form using Multilevel Factorial Design

Photochromic compounds, namely spiropyran, spirooxazine, and naphthopyran, have received much attention, because of their high potential applications in various industrial fields. The aim of this study is to understand the behavior of three photochromic dyes in solution form via statistical approach. The types of dyes and solvents were screened using multilevel factorial design. From the analysis of variance results, it was found that the types of dyes and solvents used as well as their interaction have significant effects on the absorbance and photostability. The naphthopyran compound displayed highest change in absorbance intensity, followed by spiropyran and spirooxazine, when dissolved in isopropanol separately. However, the spirooxazine is the most photostable dye compared to naphthopyran and spiropyran, with ethanol as the solvent. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Calculated Oxidation Potentials Predict Reactivity in Baeyer-Mills Reactions

Azobenzenes are widely used as dyes and photochromic compounds, with the Baeyer-Mills reaction serving as the most common method for their preparation. This transformation is often plagued by low yields...

An effective approach to fabricate high strength polyurethane hydrogels with reversible photochromic performance as a photoswitch

Photochromic hydrogels have attracted widespread attention because of their potential applications in optical devices. Spiropyran (SP) is one of the most investigated organic photochromic compounds, which have high sensitivity to...