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408719

Sigma-Aldrich

Polyethylenimine, ethylenediamine end-capped

average Mw ~800 by LS, average Mn ~600 by GPC

Sinónimos:

PEI, ethylenediamine branched

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About This Item

Fórmula lineal:
H(NHCH2CH2)nNH2
Número de CAS:
25987-06-8
MDL number:
MFCD00084427
UNSPSC Code:
12162002
NACRES:
NA.23

form

viscous liquid

mol wt

average Mn ~600 by GPC
average Mw ~800 by LS

refractive index

n20/D 1.5240

density

1.050 g/mL at 25 °C

InChI

1S/C2H8N2.C2H5N/c3-1-2-4;1-2-3-1/h1-4H2;3H,1-2H2

InChI key

SFLOAOINZSFFAE-UHFFFAOYSA-N

Categorías relacionadas

General description

Polyethyleneimine is a hydrophilic polymerwidely used as a non-viral synthetic vector for invivo delivery of therapeutic nucleic acids. Owing to its excellentphysicochemical properties, it is applied in many fields like the separationand purification of proteins, carbon dioxide absorption, drug carriers,effluent treatment, and biological labels.

Application

Branched PEI can be used as a precursor to synthesize conjugated polyplexes for efficient gene transfection. Conjugation of PEI with Jeffamine polyether and guanidinylation of the amino groups of PEI reduce the cytotoxicity of the polyplexes and protect them from aggregation in the presence of serum proteins.

Bamboo charcoal impregnated with PEI can be used as a CO2 adsorbent. Numerous amino groups present in PEI can react with CO2 due to acid-alkali interaction and enhance the adsorption capacity of bamboo charcoal.

It can also be used to prepare cross-linked water-soluble polymers with high coordination capabilities towards organic drug molecules.

Features and Benefits

  • Branched PEI has better complexation and buffering capacity.
  • High ion exchange capacity and affinity toward proteins.
  • SignificantDNA transfer efficiency.

Physical form

Branched polymer

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

356.0 °F

flash_point_c

180 °C

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Valentina Dinca et al.
Sensors (Basel, Switzerland), 18(12) (2018-12-07)
Developing a controlled method for obtaining hybrid enzymatic-based interfaces for sensing application require the use of a multiuse, reusable sensor. By controlling the interface characteristics in terms of the surface chemistry, thickness, and roughness, a tailored response toward various toxic
Irena Mamajanov et al.
Life (Basel, Switzerland), 10(8) (2020-08-23)
Enzymes are biological catalysts that are comprised of small-molecule, metal, or cluster catalysts augmented by biopolymeric scaffolds. It is conceivable that early in chemical evolution, ancestral enzymes opted for simpler, easier to assemble scaffolds. Herein, we describe such possible protoenzymes:
Andrew Jajack et al.
PloS one, 14(1), e0210286-e0210286 (2019-01-17)
Insurmountable detection challenges will impede the development of many of the next-generation of lab-on-a-chip devices (e.g., point-of-care and real-time health monitors). Here we present the first membrane-based, microfluidic sample preconcentration method that is continuous, quantifiable, simple, and capable of working
Anna Alhaddad et al.
PloS one, 7(12), e52207-e52207 (2013-01-04)
Small interfering RNAs (siRNAs) are powerful tools commonly used for the specific inhibition of gene expression. However, vectorization is required to facilitate cell penetration and to prevent siRNA degradation by nucleases. We have shown that diamond nanocrystals coated with cationic
Xinxin Song et al.
Cancer discovery, 10(12), 1872-1893 (2020-09-18)
Despite widespread utilization of immunotherapy, treating immune-cold tumors has proved to be a challenge. Here, we report that expression of the immune checkpoint molecule B7-H4 is prevalent among immune-cold triple-negative breast cancers (TNBC), where its expression inversely correlates with that
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Professor Yoshiki Katayama (Kyushu University, Japan) discusses recent advances in drug delivery systems and strategies that exploit the EPR effect, with a special focus on stimuli-responsive systems based on novel materials.

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Polyelectrolyte Multilayer Films and Membrane Functionalization

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