نتایج جستجو برای: polyethylenimine

تعداد نتایج: 1240  

2017
Qing-Ying Yu Yu-Rong Zhan Ji Zhang Chao-Ran Luan Bing Wang

Low molecular weight polyethylenimine (1800 Da, also referred to as oligoethylenimines, OEI) was modified with amino acids, including two aromatic amino acids (tryptophan, phenylalanine) and an aliphatic amino acid (leucine). The substitution degree of amino acids could be controlled by adjusting the feeding mole ratio of the reactants. Fluorescence spectroscopy and circular dichroism experimen...

2015
YounJung Jung Chang-Beom Park Youngjun Kim Sanghun Kim Stephan Pflugmacher Seungyun Baik Mónica Amorim

Four different manufactured surface-coated silver nanoparticles (AgNPs) with coating of citrate, tannic acid, polyethylene glycol, and branched polyethylenimine were used in this study. The toxicity of surface-coated AgNPs was evaluated by a luminous microbial array for toxicity risk assessment (LumiMARA) using multi-species of luminescent bacteria. The salt stability of four different AgNPs wa...

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