New 1,8-naphthalimide-based colorimetric fluorescent probe for specific detection of hydrazine and its multi-functional applications

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Год журнала: 2023, Номер 305, С. 123450 - 123450

Опубликована: Сен. 22, 2023

Язык: Английский

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Light Triggered Reversible Aggregation/Dispersion of Hydroxy Azo‐benzenes During Photo Switching: Solvent, Ions Assisted Dispersion, and Induced Quenching Emission

ChemPhotoChem, Год журнала: 2024, Номер 8(6)

Опубликована: Янв. 31, 2024

Abstract Hydroxy azo‐benzenes are very well known for their rapid trans ⇆ cis photoisomerization under polar solvents. In contrast, we synthesized two hydroxymethylated‐ hydroxyazobenzene derivatives and investigated light‐triggered stability The result showed just opposite behavior slow isomerization was observed (minutes‐days). Thus, the UV‐vis spectrum revealed a low decrease in absorbance of π–π* transition. Surprisingly, process became faster with addition ionic species. Here, attempted to understand underlying cause unusual photo‐switching behavior. presence hydroxymethyl fluorine substituents found have significant effect on photo‐isomerized products. it confirmed NMR DLS studies that photostability compounds caused by solvent‐assisted aggregation (hydrodynamic radius, R H 5660–1720 nm) which underwent dispersion (R H, 220–68 formed stable solvated photoproduct photoirradiation. Furthermore, this aggregation‐dispersion be slowly reversible. Further, fluorescence emission demonstrated characteristic dispersion‐induced quenching. Regular photoswitching non‐polar conditions benzene where an expected blue shift transition increase intensity n–π* transitions.

Язык: Английский

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Synthesis of hybrid azobenzene-chalcone dyes and studies on their photophysical properties: Molecular recognition of carbonate and phosphate ions using a novel turn-off fluorescent probe

Journal of Molecular Structure, Год журнала: 2024, Номер 1306, С. 137839 - 137839

Опубликована: Фев. 20, 2024

Язык: Английский

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Light‐ and Water‐Driven Nanoarchitectonics of Amphiphilic Azobenzene Derivatives: Photoswitching and Self‐Aggregation Dispersion Studies

ChemPhotoChem, Год журнала: 2025, Номер unknown

Опубликована: Май 30, 2025

Herein, how aggregation‐dispersion behavior of fluorinated azobenzene derivatives 5 and 6 with an amphiphilic dodecaoctane substituent is affected by UV light irradiation water described. The influence fluorine substituents on their photophysical properties, photoswitching differences, aggregation in waterin‐ground trans excited cis ‐state studied. Their properties are investigated under the polar MeOH nonpolar solvent benzene it found that shows different as compared to both solvents. Further, check MeOH, a competing added. It observed MeOH–H 2 O solution (0.9‐1.5 mL), compounds show redshift decrease absorbance, fluorescence emission found. dynamic scattering opposite behavior, initially macromolecular aggregated state ‐states but addition disperses solution. However, uniform micromolecular features further after water. Scanning electron microscopy images suggest patterns change morphology when added IR, 1 H, 19 F NMR done understand site intermolecular interactions.

Язык: Английский

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Studies on the effect of fluorine on the interaction of different metal ions with a fluorinated azobenzene-Schiff base: intramolecular C–F activation under polar solvent

New Journal of Chemistry, Год журнала: 2024, Номер 48(14), С. 6367 - 6377

Опубликована: Янв. 1, 2024

Herein, we report a comparative study on the interactions of different metal ions with fluorinated and non-fluorinated azobenzene-Schiff bases. Also, polar solvent was found to get activated C–F bond alkali ions.

Язык: Английский

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Nanocomposite membrane for simultaneous removal of dye and heavy metal ions from wastewater

Journal of Environmental Management, Год журнала: 2024, Номер 371, С. 123242 - 123242

Опубликована: Ноя. 4, 2024

Язык: Английский

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Azobenzenes: Photoswitching and Their Chemical Sensor Application

IntechOpen eBooks, Год журнала: 2024, Номер unknown

Опубликована: Май 16, 2024

Azobenzene is a well-known dye that undergoes fast trans-cis photoisomerization and has been widely studied used in the development of organic functional materials. Due to its selective isomeric distribution excited state, azobenzene as photoswitch storage information on molecular level, photo-controllable catalysis, solar light harvesting, photo-pharmacology, optical-to-mechanical energy conversion, electronic, photonic devices. Furthermore, characteristic distinguishable photoelectronic properties trans cis have recently sensing different ions recognition molecules. Here, we are going review recent literature where intermolecular forces show supramolecular under stimuli photo-light.

Язык: Английский

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Biosynthesis and Synthetic Biology of Fluorinated Products in Plants

Опубликована: Янв. 1, 2024

Язык: Английский

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