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Sigma-Aldrich

Polyaniline (emeraldine base)

average Mw ~20,000

Synonym(s):

Emeraldine base polyaniline

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About This Item

CAS Number:
25233-30-1
MDL number:
MFCD00241446
UNSPSC Code:
12352103
PubChem Substance ID:
24879551
NACRES:
NA.23

mol wt

average Mw ~20,000

solubility

m-cresol: soluble
DMAC: soluble
DMF: soluble
DMSO: soluble
NMP: soluble

λmax

328 nm

InChI

1S/C3H4BrN3.ClH/c1-2-3(4)6-7-5-2;/h1H3,(H,5,6,7);1H

InChI key

LYCWKZFKTMHXQA-UHFFFAOYSA-N

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General description

Polyaniline (PAni) emeraldine salt can be prepared by protonation of PAni emeraldine base (PAni-EB). PAni-EB forms at pH>7. Its mechanism against corrosive agents has been explained in a study.
Polyaniline (emeraldine base) (PANI-EB) is a conductive polymer that can be chemically synthesized from aniline by oxidative polymerization of ammonium peroxydisulfate in acidic solution. It is widely used in electronics and optoelectronic applications.

Application

PANI-EB is a conjugating polymer that finds applications in organic light emitting diodes (OLEDs), anticorrosive coatings, chemical sensors and solar cells.

Features and Benefits

Undoped form of conducting polymer (non-conductive).

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Polyaniline/TiO2 solar cells.
Liu Z, et al.
Synthetic Metals, 156(9-10), 721-723 (2006)
Anticorrosion performances of epoxy coatings modified with polyaniline: A comparison between the emeraldine base and salt forms
Armelin E, et al.
Progress in Organic Coatings, 65(1), 88-93 (2009)
Polyaniline nanofiber gas sensors: examination of response mechanisms.
Virji S, et al.
Nano Letters, 4(3), 491-496 (2004)
Emeraldine Base Polyaniline as an Alternative to Poly(3,4-ethylenedioxythiophene) as a Hole-Transporting Layer
Higgins RWT, et al.
Advances in Functional Materials, 11(6), 407-402 (2001)
Polyaniline nanofibers: facile synthesis and chemical sensors
Huang J, et al.
Journal of the American Chemical Society, 125(2), 314-315 (2003)
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