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- W4214668045 abstract "Changes in the dynamic structure and permeability of the branched polyethyleneimine (PEI) macromolecule occurring during the formation of complexes with Cu(II) ions have been investigated by means of spin-exchange titration and luminescent probes. It was found that when the Cu(II) concentration does not exceed 18 of the concentration of PEI amine groups the PEI-Cu(II) complex is freely permeable for small uncharged molecules. PEI becomes impermeable for such molecules in the case of high Cu concentrations; only copper ions bound in a complex and located on the surface of the metal-containing polymer coil are accessible for interaction with the latter molecules." @default.
- W4214668045 created "2022-03-02" @default.
- W4214668045 date "1997-06-01" @default.
- W4214668045 modified "2023-10-17" @default.
- W4214668045 title "Bio-sensor for fructose estimation in foods - made from a graphite-oil paste contg. enzyme and polyethylene imine." @default.
- W4214668045 doi "https://doi.org/10.1016/s0956-7135(97)88714-2" @default.
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