The cationic charged chitosan and the weak polyacid poly(ethylene-alt-maleic acid) are used to build polyelectrolyte multilayers (PEMs). To study rotational dynamics of polymer backbone in swollen state PEMs using electron paramagnetic resonance spectroscopy, a nitroxide spin-label is covalently attached polyacid. It found that spectra with even number layers show superposition two spectral com...

Higher plant cells have a long tradition of use in the studies on environmental mutagenesis in situ, especially in relation to human health risk determination. The studies on the response of plant and human cells to physical and chemical mutagens showed differences in their sensitivity. The differences in the presence of cell components in plants and humans could influence such response. Additi...

Maleic hydrazide (1, 2-dihydropyridazine-3, 6dione) is an organic plant growth regulator which has found use in such varied areas as prevention of sucker formation in tobacco, prevention of sprouting of some stored vegetables, and as a herbicide. In commercial application the diethanolamine salt (diethanolammonium maleic hydrazide or diethanolammonium-1 ,2-dihydropyridazine-3, 6-dione) is often...

Coordination self-assembly of a series of tetranuclear Pt(II) macrocycles containing an organometallic backbone incorporating ethynyl functionality is presented. The 1:1 combination of a linear acceptor 1,4-bis[trans-Pt(PEt3)2(NO3)(ethynyl)]benzene (1) with three different dipyridyl donor ‘clips’ (La–Lc) afforded three [2 + 2] self-assembled Pt(II)4 macrocycles (2a–2c) in quantitative yields, r...