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1

Morphology and characterization of cockloft-like ZnO/morin hybrid

Li Y., Zou Y. L.

Materials Science Poland

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2010

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Vol. 28, No. 3

741--748

EN

Morin modified multilayer ZnO with a cockloft-like morphology was fabricated in alcohol solution, using hydrothermally synthesized ZnO nanodisks and morin as the precursors. The samples were characterized by field emission scanning electron microscopy, X-ray diffractometry, Fourier transform infrared spectroscopy and fluorescence spectroscopy. The results show that the cockloft-like ZnO hybrid, having hexangular morphology with the diameter of 1.5-2 žm and the thickness of ca. 1 žm, is composed of a multilayer flatform stacked by numerous ZnO nanodisks in its middle and a meshlike muffle made up of countless morin nanoparticles with the diameter of ca. 40 nm. The UV emission of the as-fabricated product is obviously attenuated by morin nanoparticles assembling on the surface of the ZnO nanodisks.

2

Blue shift of photoluminescence of Al2O3-morin nanocomposites

Liu X., Wang Q., Li Y., Guo Y.

Materials Science Poland

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2009

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Vol. 27, No. 4/1

1009--1014

EN

Using AlCl3 and ammonia as starting materials, Al2O3 nanoparticles were fabricated by the chemical precipitation method. Morin was chemically bound on the surface of Al2O3 nanoparticles by the ultrasonic method, and the Al2O3-morin fluorescent nanocomposite was obtained. Because of interaction between the morin molecules and the surface atoms of Al2O3 nanoparticles, a blue-shift of the photoluminescence was observed for the nanocomposites compared with that of morin.

3

Zastosowanie kwercetyny, moryny i ich sulfonowych pochodnych w terapii i przemyśle spożywczym

Kopacz M., Kuźniar A.

Wiadomości Chemiczne

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2005

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[Z] 59, 7-8

723--735

EN

Flavonoids (derivatives of 2-phenylo-y-benzopyrone) are a large group of biologically active plant products. As a common component of daily nutrition, flavonoids can modulate many biological processes. Therapeutic properties of flavonoids have been well known for many years. Originally, the object of interest was medicinal plants. The papers by Szent-Gyorgy in the thirties of the 20-th century aroused interest in flavonoids. Szent-Gyorgy revealed that a lemon compound belonging to flavonoids - hesperidin has a synergic effect with Vitamin C and prevents scurvy. Quercetin (3,5,7,3',4'-pentahydroxyflavone) and morin (3,5,7,2',4'-pentahydroxyflavone), Fig. 1, are the most widespread flavonoids. Due to their properties these compounds find application in therapy as viral antigens, bactericide and antitumor agents. Owing to a convenient position of oxygen in the 5C-OH and 4C=O as well as 3C-OH and 4C=O groups, morin and quercetin form chelate complexes with ions of p-, d- and f-electron metals. Some researchers think, that biological activity of flavonoids is connected with their complexation capacity. Therapeutic action can show both the molecule and its metabolite. The application of quercetin and morin is restricted due to their insolubility in water. Their sulfonic derivatives are well soluble in water and show biological activity as their mother compounds. Therefore, the latter can be more useful for therapy purposes.

4

Trwałość kompleksów sulfonowych pochodnych kwercetyny i moryny z jonami niektórych metali

Bujonek B., Kopacz M., Kuźniar A.

Zeszyty Naukowe Politechniki Rzeszowskiej. Chemia

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2004

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z. 19 [216]

5--11

PL

Podano przegląd prac, w których metodą potencjometryczną i spektrofotometryczną wyznaczono wartości stałych trwałości kompleksów Al(IIl), Ga(III), In(IIl), Pb(II), Cd(II), Pr(III), Nd(III), Eu(IlI), Er(IlI), Dy(lII) z kwasem kwercetyno-5'-sulfonowym i AI(III), Ga(III), In(III), Co(II), Ni(II), Cu(II), Pb(II), Cd(II) z solą sodową kwasu moryno-5'-sulfonowego.

EN

The potentiometric and the spectrophotometric method was used to determine the stability constants for complexes of AI(III), Ga(III), In(III), Pb(II), Cd(II), Pr(III), Nd(III), Eu(III), Er(III), Dy(lII) with quercetin-5'-sulfonic acid and of Al(III), Ga(III), In(III), Co(II), Ni(II), Cu(II), Pb(II), Cd(II) with sodium salt of morin-5'-sulfonic acid. Investigations were carried out in aqueous solutions at a constant ionic strength I=0,1 (NaClO4).

5

Badania nad otrzymaniem krystalicznych form niektórych flawonoidów, ich sulfonowych pochodnych oraz kompleksów z jonami metali

Pusz J., Nitka B., Kopacz S.

Zeszyty Naukowe Politechniki Rzeszowskiej. Chemia

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2004

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z. 19 [216]

147--161

PL

Zbadano 276 układów do krystalizacji moryny, chryzyny, kwercetyny, ich sulfonowych pochodnych oraz kompleksów z jonami metali. Uzyskano formy krystaliczne dla moryny i soli sodowej kwasu moryno-5'-sulfonowego (NaMSA), sulfonowych pochodnych kwercetyny - kwasu kwercetyno-5'-sulfonowego (QSA-5') i soli sodowej kwasu kwercetyno-8,5'-disulfonowego (Na2QDSA) oraz kompleksów In(III) i Fe(IlI) z chryzyną, które zbadano metodą rentgenografii strukturalnej. Uzyskane wyniki wskazują, że QSA-5' może mieć układ regularny, tetragonalny lub heksagonalny, natomiast pozostałe związki - układ jednoskośny lub trójskośny. Wykonano zdjęcia uzyskanych form krystalicznych metodą elektronowej mikroskopii skaningowej.

EN

The 276 systems to receipt crystalline forms of morin, chrysin, quercetin, their sulphonic derivatives and complexes of metal ions were examined. The crystalline forms of morin, sodium salt of morin-5'-sulphonic acid (NaMSA), quercetin-5'-sulphonic acid (QSA-5'), sodium salt of quercetin-8,5'-disulphonic acid (Na2QDSA) and complexes of In(III) and Fe(III) ions with chrysin were obtained. The method of structural X-rays radiography and electron scanning microscopy were used.

6

Complexes of La(III), SM(III), Tb(III), Dy(III), Ho(III) and Er(III) Ions with Morin

Kopacz M., Woźnicka E.

Polish Journal of Chemistry

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2004

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Vol. 78 / nr 4

521-528

EN

New solid complex compounds of La(III), Sm(III), Tb(III), Dy(III), Ho(III) and Er(III) ions with morin were obtained. They were characterized by elemental analysis, thermogravimetric studies and spectrophotometric determination of metal ions. The molecular formulae of the compounds are: Ln(C15H9O7)3_nH2O, where n = 6 forLa,Sm,Tb,Dy and n = 5 for Ho and Er. Low molar conductances of the complexes (which correspond to non-electrolytes) and the _-_* bands of ligand and the CT bands L_Min UV-VIS spectra of the methanol solutions of the complexes were established. On the basis of 13CNMR and IR spectra, it was supposed that morin was bound to the lanthanide ions via C(4)=O and C(3)-oxygen.

7

Kompleksy jonów Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Tb(III), Dy(III), Ho(III) i Er(III) z kwasem kwercetyno-5'-sulfonowym (QSA)

Nowak D.

Zeszyty Naukowe Politechniki Rzeszowskiej. Chemia

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2002

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z. 18 [194]

65-76

8

Zastosowanie sulfonowych pochodnych flawonoidów w analityce, terapii i przemyśle spożywczym

Kopacz M., Kopacz S.

LAB Laboratoria, Aparatura, Badania

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1999

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R. 4, nr 3

16-19

9

Jonoforetyczne badania niektórych flawonoidów i ich kompleksów z jonami metali

Kopacz M., Woźnicka E., Skuba E.

Zeszyty Naukowe Politechniki Rzeszowskiej. Chemia

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1998

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z. 15 [169]

39-44

PL

Przeprowadzono badania jonoforetyczne kwercetyny, moryny i ich sulfonowych pochodnych oraz kompleksów jonów Al(III) i Zn(II) z sulfonową pochodną moryny. Stwierdzono, że metoda elektroforezy bibułowej może służyć do oddzielenia kwercetyny i moryny od ich sulfonych pochodnych.

EN

The ionophoretic inwastigation of quercitin, morin and their sulfonic derivatives and ions Al(III) and Zn(II) complexes with sulfonic morin derivative have been carried out. It has been state that the method of paper electrophoresis can be used for flavonoids (quercitin and morin) and their sulfonic derivatives separation.