Recent progress in multi-stimulable photochromic oxazines with their wide-ranging applications

Gulati, Gurleen Kaur; Gulati, Loveleen Kaur; Kumar, Satish

doi:10.1016/j.dyepig.2021.109445

Cited by 27 publications

(17 citation statements)

References 116 publications

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“…The peaks at 873 cm À1 and 752 cm À1 were assigned to symmetrical and asymmetrical stretching vibrations of the naphthalene ring. 29,30 By blending SPO with PMMA, the relevant characteristic peaks confirmed that PMMA-SPO fibers had been successfully fabricated. After the PMMA-SPO fiber was irradiated by UV, the peaks representing CQN at 3450 cm À1 and 1632 cm À1 almost disappeared, indicating that PMMA-SPO involved a ringopening reaction.…”

Section: Photochromism Performance Of Pmma-spo Screen Windowmentioning

confidence: 82%

One-step electrospinning PMMA-SPO with hierarchical architectures as a multi-functional transparent screen window

et al. 2022

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Section: Photochromism Performance Of Pmma-spo Screen Windowmentioning

confidence: 82%

One-step electrospinning PMMA-SPO with hierarchical architectures as a multi-functional transparent screen window

et al. 2022

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“…Among them azobenzenes, spiropyrans, furylfulgides, and diarylethenes are being considered as the most potential photoresponsive materials due to their excellent thermal stability, photoreactivity, fatigue resistance, and rapid responses. [48,49] Although, to date, a number of studies have fruitfully been presented related to the cation recognition by utilizing the photoswitchable receptors, but only limited reports are available for anion as well as ion-pair receptors using such photoresponsive systems (Figure 8). [50][51][52][53][54][55][56][57] Kokan's research group has reported the synthesis of a novel 2,6-pyridine bisamide supported 2-pyridyl acylhydrazone based photoswitchable heteroditopic ion-pair receptor 58, having a low molecular weight, and was easily achieved from the commercially available precursors (Figure 9).…”

Section: Photoswitchable Ion-pair Receptorsmentioning

confidence: 99%

Recent Advancements in Ion‐Pair Receptors

Wagay

Khan

Ali

2022

Chemistry An Asian Journal

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Over the past two decades, non‐covalent chemistry has introduced various promising artificial receptors and revolutionized the host‐guest chemistry. These versatile receptors have particularly been entertained in sensing and recognizing of diverse neutral molecules and/or ionic entities (e. g. anions, cations and ion‐pair) of particular interest. Notably, supramolecular chemistry had given birth to a plethora of important molecules, explored in the chemical, biological, environmental, and pharmacological world to resolve the critical issues related to the human health while keeping environmental concerns in mind. Amongst the various types of supramolecular monotopic receptors (anions, cations, and neutral molecules), heteroditopic receptors (ion‐pair receptors) consisting of distinct binding sites in one system for both cation and anion, have gained much interest from the scientific community in recent past because of their unique binding abilities. Interestingly, these promising artificial receptors have shown potential applications in sensing, recognition, transport and extraction processes besides their uses in salt/waste purification. Bearing the importance of these systems in mind, we intended to report the recent developments in ion‐pair chemistry. Herein, we divided the whole document into three main sections; first one describes the introduction and history of the ion‐pairs receptors. The second portion highlights the synthesis and applications of ion‐pair receptors in sensing, recognition, molecular machines, photoswitching behaviour, extraction and transport properties, whereas the last part of this manuscript provides concluding remarks as well as future prospects of ion‐pair receptors. We hope that this manuscript will be helpful to stimulating researchers around the globe to find out the hidden opportunities in this and related areas.

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“…A photochromic agent is able to regain its original optical condition when the illumination source is switched off. , Sensors, ophthalmic lenses, displays, and sunglasses are just some of the high-tech items that might benefit from the photochromic phenomenon. This advanced knowledge of light-induced chromic materials has shown to be highly useful in a variety of applications such as security barcodes, protection of trademark, UV shielding, military camouflage, and smart textiles. − Organic dyes make up the vast bulk of well-known photochromic agents. However, organic photochromic colorants have shown drawbacks such as expensive prices and low photostability.…”

Section: Introductionmentioning

confidence: 99%

“…This advanced knowledge of light-induced chromic materials has shown to be highly useful in a variety of applications such as security barcodes, protection of trademark, UV shielding, military camouflage, and smart textiles. 15 − 18 Organic dyes make up the vast bulk of well-known photochromic agents. However, organic photochromic colorants have shown drawbacks such as expensive prices and low photostability.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Lighting in the Dark and Photochromic Electrospun Glass Nanofiber-Reinforced Epoxy Nanocomposites Immobilized with Alkaline Earth Aluminates

et al. 2022

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Alkaline earth aluminates (AEAs) as photoluminescent agents and silicon dioxide-based electrospun glass nanofibers with an average diameter of 150−450 nm as a roughening agent were prepared and applied to reinforce an epoxy resin toward the development of long-persistent photoluminescent and photochromic smart materials, such as smart windows and anticounterfeiting barcodes. With the physical immobilization of lanthanide-doped aluminate nanoparticles (NPs), a light-induced luminescent transparent glass@epoxy film was developed. The glass@epoxy samples were able to alter their color to green beneath ultraviolet rays and greenish-yellow in the dark, as explored by CIE Lab and luminescence spectral analyses. The morphology of the lanthanidedoped aluminate nanoparticles (43−98 nm) was examined by transmission electron microscopy (TEM). The morphologies and chemical composition of the luminescent glass@epoxy substrates were determined by different analytical techniques. The mechanical properties of the developed photoluminescent glass@epoxy substrates were inspected to show improved scratch resistance as compared to the AEA-free substrate. The photoluminescence spectra were measured to indicate the detection of two emission bands at 494 and 525 nm when excited at 365 nm. The photoluminescent glass@epoxy hybrids with lower AEA contents have showed fast reversibility of photochromism. On the other hand, the glass@epoxy substrates with higher phosphor contents underwent persistent luminescence. Results showed that the luminescent colorless glass@epoxy hybrids have enhanced superhydrophobicity and ultraviolet blocking.

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Recent progress in multi-stimulable photochromic oxazines with their wide-ranging applications

Cited by 27 publications

References 116 publications

One-step electrospinning PMMA-SPO with hierarchical architectures as a multi-functional transparent screen window

One-step electrospinning PMMA-SPO with hierarchical architectures as a multi-functional transparent screen window

Recent Advancements in Ion‐Pair Receptors

Preparation of Lighting in the Dark and Photochromic Electrospun Glass Nanofiber-Reinforced Epoxy Nanocomposites Immobilized with Alkaline Earth Aluminates

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