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- W3142294562 abstract "Photo-induced Fenton reaction was utilized in this paper to control the sizes of polyethylenimine hydrogels (M-PEIs,M,Fe atom) as gene delivery vector.H_2O_2 and FeCl_2 were mixed with PEI pre_polymer in water in a 3-neck quartz flask, and the mixture was stirred vigorously.M-PEIs nanogels dispersed very well in water could be prepared under illumination by use of low-pressure Hg lamps at room temperature.This system was protected from oxygen with N_2.By changing reaction conditions,such as the pH value,reaction time and concentrations of solutes,sizes of M-PEIs nanogels could be controlled.It was found that the sizes of M-PEIs decreased with the pH value and the concentrations of FeCl_2.The increasing of the initiator (H_2O_2) concentrations would make the particles more tighten,but might result in crosslinking or degradation of particles.A suitable irradiation time ensured formation of homogeneous nanogel products,but prolonged irradiation would cause degradation of nanogels.After photo crosslinking,the products were purified with membrane filters of 0.45 μm and treated further by dialysis bags with size exclusion below 10 kDa in order to make them more stable for storage." @default.
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- W3142294562 date "2007-01-01" @default.
- W3142294562 modified "2023-09-25" @default.
- W3142294562 title "SIZE CONTROLLING OF M-PEIS NANOGELS via PHOTO-INDUCED FENTON REACTION" @default.
- W3142294562 hasPublicationYear "2007" @default.
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