The study of photochromic performance and photofatigue behavior of spirooxazine

Islam, Noor Zalikha Mohamed; Nazri, Shamsul Azrolsani Abdul Aziz; Nadir, Najiah; Zainuddin, Mat Tamizi

doi:10.1063/1.5010574

Cited by 2 publications

(3 citation statements)

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“…The absorption Scheme 1. Photochromic mechanism of naphthopyrans, spirooxazines and spiropyrans [11,[39][40][41]. spectra were measured prior to and after UV irradiation by using UV-Vis spectrometer (OceanOptics USB4000) equipped with xenon lamp (OceanOptics PX-2).…”

Section: Characterizationsmentioning

confidence: 99%

“…This reaction suggested that all the three dyes undergo photoisomerization in the investigated solvents (Scheme 1). On exposure to UV irradiation, the photoisomerization of spirooxazines leads to cleavage of C−O oxazine isomer and subsequently the formation of ring-opened merocyanine isomer that is blue in color [4,11]. The col-or faded away once the UV light source is removed due to reverting back of merocyanine to oxazine-and pyran-based structures.…”

Section: Absorption Spectramentioning

confidence: 99%

“…Islam et al investigated the performance and photofatigue behavior of spirooxazines in ethanol, where maximum deep blue coloration due to active photochromism of spirooxazines was achieved at 6% UV irradiation power [11]. Nevertheless, existing photochromic studies have focused on the individual parameter while ignoring the interaction between the parameters.…”

Section: Introductionmentioning

confidence: 99%

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

Nadir

Wahid

Shafie

et al. 2021

Bull. Chem. React. Eng. Catal.

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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).

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Section: Characterizationsmentioning

confidence: 99%

Section: Absorption Spectramentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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