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904759

Sigma-Aldrich

Polyethylenimine, branched

average Mw ~270,000 by LS

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Synonym(s):
PEI
Linear Formula:
H(NHCH2CH2)nNH2
CAS Number:
9002-98-6
MDL number:
MFCD00084427
UNSPSC Code:
12162002

description

Identity:Conforms to structure

Assay

>93% (KFT)

form

liquid

mol wt

~90 kDa by LS
average Mw ~270,000 by LS

color

colorless to pale yellow

bp

250 °C (lit.)

SMILES string

C1CN1

InChI

1S/C2H5N/c1-2-3-1/h3H,1-2H2

InChI key

NOWKCMXCCJGMRR-UHFFFAOYSA-N

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Application

Branched polyethyleneimine (PEI) is widely used in many applications due to its polycationic character. Unlike its linear equivalent, branched PEI contains primary, secondary, and tertiary amines. Primarily utilized in industrial applications, high molecular weight PEI has been used as a flocculating agent, textile coating, adhesion promoter, enzyme carrier, and as a material for CO2 capture.
Polyethylenimine, branched (PEI) is a hydrophilic polymer and a gene carrier, which can be conjugated with dextran to enhance the stability of polycationic vectors. It is also used in the preparation of cationic poly(lactic-co-glycolic acid) (PLGA) nanoparticles for potential usage in gene therapy. PEI can also be grafted on polyacrylonitrile (PAN) fiber membrane for the removal of hexavalent chromium (VI) from wastewater.

Pictograms

Exclamation markEnvironment
GHS07,GHS09

Signal Word

Warning

Hazard Statements

H302,H317,H319,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Sens. 1

WGK

WGK 2

Certificates of Analysis (COA)

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Improved stability of polycationic vector by dextran-grafted branched polyethylenimine
Tseng W and Jong C
Biomacromolecules, 4(5), 1277-1284 (2003)
Polyethylenimine Applications in Carbon Dioxide Capture and Separation: From Theoretical Study to Experimental Work
Shen X, et al.
Energy Technology, 5, 822 -8833 (2017)
Biodegradable nanoparticles modified by branched polyethylenimine for plasmid DNA delivery
Son S and Kim WJ
Biomaterials, 31(1), 133-143 (2010)
Branched polyethylenimine grafted electrospun polyacrylonitrile fiber membrane: a novel and effective adsorbent for Cr (VI) remediation in wastewater
Zhao R, et al.
Journal of Material Chemistry A, 5(3), 1133-1144 (2017)
Polyethyleneimine-nano silica composites: a low-cost and promising adsorbent for CO2 capture
Li K, et al.
Journal of Material Chemistry A, 3, 2166-2175 (2015)

Articles

Nanoparticle-Based Drug and Gene Delivery for Tumor Targeting

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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