Photoswitchable chemical sensing based on the colorimetric pH response of ring-opened naphthopyrans

Zhang, Weian; Cheng, Yu; Wu, Minghui; Xie, Xiaojiang

doi:10.1016/j.snb.2024.135475

Cited by 8 publications

(7 citation statements)

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“…Monitoring pH is vital for environmental control, medical diagnostics, chemical production, and biological research, as it directly affects chemical solubility, reaction rates, and biological processes [ 86 , 87 ]. Photoswitchable probes offer significant advantages in pH measurement because they can precisely determine pH values spatially and temporally [ 88 , 89 , 90 , 91 , 92 , 93 , 94 ]. This is particularly important in complex biological systems where pH can vary significantly at the microscale, such as in different compartments within a cell or among different tissue types.…”

Section: Applications Of Photoswitchable Fluorescent and Colorimetric...mentioning

confidence: 99%

“…Leveraging this characteristic, the research team created a platform equipped with a progressive readout capability. Zhang et al explored a novel photoswitchable chemical sensing approach using naphthopyran molecules for colorimetric pH measurement [ 91 ]. Known for their robust photostability, these naphthopyran molecules are integrated into organic solvents, PVC films, and polyurethane hydrogels.…”

Section: Applications Of Photoswitchable Fluorescent and Colorimetric...mentioning

confidence: 99%

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Recent Advances in Photoswitchable Fluorescent and Colorimetric Probes

Chen,

Tang,

Yang

et al. 2024

Molecules

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In recent years, significant advancements have been made in the research of photoswitchable probes. These probes undergo reversible structural and electronic changes upon light exposure, thus exhibiting vast potential in molecular detection, biological imaging, material science, and information storage. Through precisely engineered molecular structures, the photoswitchable probes can toggle between “on” and “off” states at specific wavelengths, enabling highly sensitive and selective detection of targeted analytes. This review systematically presents photoswitchable fluorescent and colorimetric probes built on various molecular photoswitches, primarily focusing on the types involving photoswitching in their detection and/or signal response processes. It begins with an analysis of various molecular photoswitches, including their photophysical properties, photoisomerization and photochromic mechanisms, and fundamental design concepts for constructing photoswitchable probes. The article then elaborates on the applications of these probes in detecting diverse targets, including cations, anions, small molecules, and biomacromolecules. Finally, it offers perspectives on the current state and future development of photoswitchable probes. This review aims to provide a clear introduction for researchers in the field and guidance for the design and application of new, efficient fluorescent and colorimetric probes.

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Section: Applications Of Photoswitchable Fluorescent and Colorimetric...mentioning

confidence: 99%

Section: Applications Of Photoswitchable Fluorescent and Colorimetric...mentioning

confidence: 99%

Recent Advances in Photoswitchable Fluorescent and Colorimetric Probes

Chen,

Tang,

Yang

et al. 2024

Molecules

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“…The photochromic groups like spiropyran (SP) [23][24][25], azobenzene [26] and diarylvinyl moiety [27] can be fluorophores because they all have strong fluorescent properties. They can interact with acidic [28][29][30][31] or halogen compounds [32], and then exhibit a color-change procedure during the interaction. This provides another way for substance detection besides fluorescent emission.…”

Section: Introductionmentioning

confidence: 99%

A new two-dimensional, spiropyran-based polymer fluorescent nanoprobe with quantitative-fluorescent and photochromic properties for multi-substance detection

Lin,

Zhang,

Huang

2024

Nanotechnology

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One challenge of the structural design of a fluorescent probe is how to improve the detection performance on trace target analytes in complex samples. Herein a new polymer fluorescent nanoprobe (2DSP-C28) has been synthesized, by adopting a two-dimensional (2D), spiropyran (SP)-based nanosheet structure with hydrophobic long-chain alkanes (C28). Unlike a traditional spiropyran-based small molecule probe, the 2DSP-C28 probe can exhibit quantitative-fluorescent and photochromic properties. Under the detection of metal-ions, the nanoprobe in DMSO aqueous solution is selectively fluorescent-quenched-responsive for Fe-ions (~100 μM), with a characteristic stoichiometric ratio (SR) of <10, a high sensitivity (LOD: ~ 0.2 μM). When the nanoprobe is incorporated into electrospun polyethylene oxide (PEO), it can be used for gas detection, and display a color-change with acid-base gas and identify the HF gas. It is expected that this new polymer fluorescent nanoprobe can be promisingly applied for rapidly environmental monitoring on the ion or gas pollution.

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“…Since HTI-In was virtually insoluble in water, we physically adsorbed the molecules onto the hydrophobic 3-dimensional microdomains of a polyurethane hydrogel. 5 Remarkably, the photochromic effect in the hydrogel was still observable under ambient light conditions.…”

mentioning

confidence: 96%

“…In ion-selective chemosensors, target ions are bound to specific molecular receptors with high affinity and selectivity, establishing an equilibrium with these receptors. 1–6 In contrast, chemodosimeters, operating in a non-equilibrium mode and utilizing reaction kinetics, offer another avenue for discriminating between different target analytes. 7–10 A myriad of chemodosimeters have been reported based on irreversible reactions with the target ions or catalyzed by them.…”

mentioning

confidence: 99%