Modulation of a solid-state reversible fluorescent photoswitching based on a controllable photochromic pyrazolones

Liu, Hu; Guo, Jixi; Jia, Dianzeng; Guo, Mingxi; Le, Fuhe; Wu, Dongling; Li, Feng

doi:10.1016/j.jssc.2014.04.020

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…Using the phosphor Sr2P2O7 co-doped with europium ion and chlorine ion (Sr2P2O7-EC), Lui et al [17], created a novel solid-state reversible fluorescence photoswitching system(FPS) based on photochromism of photochromic pyrazolones. As the fluorescent dye and the photochromic molecule, (3-chlorophenyl) (5-hydroxy-1,3-diphenyl-1H-pyrazol-4-yl) methanone reacts with N-phenyl hydrazine carboxamide to create 1,3 diphenyl-4-(3-chlorobenzal)-5hydroxy pyrazole-4-phenyl semicarbazone.…”

Section: Synthesis Of Photochromic Pyrazolones Based On Photochromish...mentioning

confidence: 99%

Recent Trend on Known Pyrazolone Endowed Derivatives: Anoverview

Neelima¹,

ASHA²,

RUKMINI³

et al. 2022

Int J Curr Pharm Sci

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Pyrazolone is a lactam ring with five-membered and 2-Nitrogen and 1-ketonic groups in its structure. Antimalarial, antifungal, antimycobacterial, antibacterial, anti-inflammatory, anticancer, gastric secretion stimulatory, antidepressant and antifilarial properties are also found in pyrazolones. They are also used in the extraction and separation of various metal ions, as well as precursors for dyes, pigments, insecticides and chelating agents. The excellent therapeutic qualities of pyrazolone-related medicines have prompted medicinal chemistry to develop a slew of new chemotherapeutic treatments. The synthesis of pyrazolone and numerous structural reactions may be done in a variety of ways, which opens up a lot of possibilities in the field of medicinal chemistry. This article mainly reports the chemistry, novel synthesis and biological activity of Pyrazolones and their derivatives.

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Section: Synthesis Of Photochromic Pyrazolones Based On Photochromish...mentioning

confidence: 99%

Recent Trend on Known Pyrazolone Endowed Derivatives: Anoverview

Neelima¹,

ASHA²,

RUKMINI³

et al. 2022

Int J Curr Pharm Sci

View full text Add to dashboard Cite

show abstract

“…Liu et al 19 have been reported a novel solid-state reversible fluorescence photo switching system (FPS) based on photochromism of photochromic pyrazolones has been developed by employing phosphor Sr 2 P 2 O 7 co-doped with europium ion and chlorine ion (Sr 2 P 2 O 7 -EC). Kumar et al 21 have been reported the synthesis of 1-(4-methylcoumarinyl-7-oxyacetyl)-3,5-dimethyl-4-(arylazo)pyrazoles 14 by reaction of 1,3-diketo-1,3-dimethyl-2-(arylazo)propane 12 and 4methylcoumarinyl-7-oxyacetic acid hydrazide 11 in glacial acetic acid was refluxed for 10 h. And the synthesis of 1-(4-methylcoumarinyl-7-oxyacetyl)-3-methyl-4-(substituted phenyl) hydrazono-2pyrazolin-5-one Ethyl-2-(substituted phenyl) hydrazono-3-oxobutyrate 15 was dissolved in glacial acetic acid and 4-methylcoumarinyl-7oxyacetic acid hydrazide 13 was refluxed for 4 h.…”

Section: Scheme 1: Synthesis Of 44'-(arylmethylene)bis(1h-pyrazol-5-mentioning

confidence: 99%

Untitled

2015

IJPSR

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Heterocyclic compounds are acquiring more importance in recent years because of their pharmacological activities. Pyrazolones have a particular value due to their broad spectrum of biological activity and their wide ranging utility as synthetic tools in the design of various bioactive molecules. Pyrazolone is a five membered lactum ring, containing two nitrogen and one ketonic group in its structure. In addition, pyrazolones possess antimicrobial, antifungal, antimycobacterial, antibacterial, antiinflammatory, antitumor, gastric secretion stimulatory, antidepressant and antifilarial activities. They also serve as precursors for dyes, pigments, pesticides and chelating agents, besides finding applications in the extraction and separation of various metal ions. The high therapeutic properties of the pyrazolone releted drugs have encouraged the medicinal chemists to synthesized a large number of novel chemotherapeutic agents. Numerous methods for the synthesis of pyrazolone and also their various structure reactions offer enormous scope in the field of medicinal chemistry. This articles aims to review the work reported, their chemistry and biological activities of pyrazolone during past years.

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“…As an important source of water pollution, modern organic pollutants like dyes offer superior stability in water, since extensive conjugation exists in their aromatic structures. 1–7 Furthermore, numerous dyes, including methylene blue and Rhodamine (Rh) B, possess long-term hazards for human health and the natural environment. 8,9 Thus, it is urgent to remove organic pollutants from water using efficient and environmentally friendly strategies.…”

Section: Introductionmentioning

confidence: 99%