2014年5月1日 · Branched Polyethyleneimine (PEI) is biocompatible material and has strong adsorption towards heavy metal ions for abundant amount of primary, secondary and tertiary …

2017年5月1日 · In the present study, we created a facile, direct, and rapid spectrophotometric method for sensing copper (II) ion in aqueous media by using PEI, as shown in Scheme 1. …

2003年2月5日 · Polyethylenimine (PEI) is a cationic polymer that can be associated to oligonuclotides to promote their transfection both in vitro and in vivo. The controlled release of …

2021年2月1日 · The optical properties of PEI-CDs were researched by recording UV–vis absorption and fluorescence spectra. The UV–vis absorption spectrum of PEI-CDs ( Fig. 5 a) …

PEI also lacks a UV chromophore, making it difficult to analyze with a standard UV detector. SIELC’s new PEI column was designed specifically for the analysis of PEI by ion-exclusion …

In this work, we developed a facile, sensitive, and rapid spectrophotometric method for copper (II) ion detection in aqueous media using polyethyleneimine. Polyethyleneimine is a cationic …

2016年4月13日 · A new method of determination of polyethylenimine (PEI) is presented. The method is fast, reliable, and easy to perform. It is based on a creation of a complex between …

SIELC developed a new methodology and a corresponding HPLC column to address these difficulties and offer a simple and reliable method for PEI quantitation in any liquid samples. …

1 天前 · At the same time, the original cotton fabric, PEI modified and dyed cotton fabric exhibit lower UPF values, only 10.23, 8.48 and 12.53, 49.08 respectively, without UV protection …

SIELC developed a new methodology and a corresponding HPLC column to address these difficulties and offer a simple and reliable method for PEI quantitation in any liquid samples. …