Aromatic properties of 8-hydroxyquinoline and its metal complexes
نویسندگان
چکیده
منابع مشابه
Fluorescence Properties of Metal Complexes of 8-Hydroxyquinoline-5-sulfonic Acid and Chromatographic Applications
Seventy-eight metal species are examined for fluorescence properties of their chelates with 8-hydroxyquinoline-5-sutfonic acid (HQS); 42 of these fluoresce, many intensely. The optimum pH, determined by ligand ionization vs. hydroxo compiex formation, iles between 5 and 8. Cadmlum forms the most fluorescent complex In a purely aqueous solution. Fluorescence Is enhanced for many metals in surfac...
متن کاملSynthesis, Spectral Studies and Antibacterial Activities of 8-Hydroxyquinoline Derivative and its Metal Complexes
1-(8-Hydroxy quinolin-2yl-methyl) thiourea ligand (HTF) was synthesized from 8-hydroxyquinoline and thiourea with formaldehyde by condensation method in N,N-dimethyl foramide medium. The metal complexes Zn(II), Cu(II), Ni(II) and Co(II) were prepared using the 1-(8-hydroxy quinolin-2yl-methyl) thiourea as ligand. The ligand and its metal complexes were characterized by elemental analysis, FT-IR...
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PURPOSE Estrogens play important roles in the pathogenesis and progression of breast cancer as well as estrogen-related diseases. Aromatase is a key enzyme in the rate-limiting step of estrogen production, in which its inhibition is one strategy for controlling estrogen levels to improve prognosis of estrogen-related cancers and diseases. Herein, a series of metal (Mn, Cu, and Ni) complexes of ...
متن کاملStructural and photophysical properties of trianionic nine-coordinated near-IR emitting 8-hydroxyquinoline-based complexes.
Two building blocks, 2-(1H-tetrazol-5-yl)quinoline-8-ol (8-hydroxyquinoline-2-tetrazole) (H(2)hqt) and 8-hydroxyquinoline-2-carboxylic acid (H(2)hqa) provide convenient dianionic tridentate O,N,N- and O,N,O-chelating units containing the 8-hydroxyquinoline chromophore. These ligands form tris-chelate tris-anionic complexes [Ln(hqa)(3)]K(3) and [Ln(hqt)(3)]K(3) in water at pH = 12. At lower pH p...
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آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...
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ژورنال
عنوان ژورنال: Open Chemistry
سال: 2013
ISSN: 2391-5420
DOI: 10.2478/s11532-013-0215-6