The method and materials used to produce this product are considered proprietary. Note that Polyaniline (emeraldine base) is typically fabricated using aniline monomer with oxidizing agents such as ammonium persulfate in an acidic aqueous medium. The commonly reported oxidant used for the polymerization is ammonium persulfate (APS/ammonium peroxydisulfate).
https://www.intechopen.com/chapters/38965
https://pmc.ncbi.nlm.nih.gov/articles/PMC6648476/
576379
Polyaniline (emeraldine base)
average Mw ~100,000
Synonym(s):
Emeraldine base polyaniline
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| Size/SKU | Availability | Price |
|---|---|---|
5 g | Check Cart for Availability | $235.00 $176.25 |
About This Item
$176.25
List Price$235.00Save 25%Web-Only Promotion
Check Cart for Availability
mol wt
average Mw ~100,000
Quality Segment
conductivity
1 × 10-9 S/cm (pressed pellet, ASTM F8)
solubility
m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble
λmax
324 nm
SMILES string
Brc1n[nH]nc1C.Cl
InChI
1S/C3H4BrN3.ClH/c1-2-3(4)6-7-5-2;/h1H3,(H,5,6,7);1H
InChI key
LYCWKZFKTMHXQA-UHFFFAOYSA-N
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 an intrinsically conducting polymer (ICP) that can be formed by oxidative polymerization of aniline. Emeraldine base contains oxidized diimine and reduced diamine. PANI can be modified into the conjugating emeraldine base form by p-type doping with protonic acid.
Application
PANI-EB can form a nanocomposite with multi-walled carbon nanotubes (MWCNTs) that can be used to functionalize glassy carbon electrodes for the electro-sensitive detection of cadmium (Cd(II)) and lead (Pb(II)). Carbon nanofibers may be reinforced on PANI-EB to yield a specific capacitance of 95 F/g and a 92% retention over 3000 cycles as observed in supercapacitor applications. It may be used with heptamethyleneimine as an inhibitor to form stable fuel cell membranes.
Features and Benefits
Undoped form of conducting polymer (non-conductive).
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This Item | |||
|---|---|---|---|
| description average Mw ~100,000 | description average Mw ~20,000 | description average Mw ~65,000 | description average Mw ~10,000 |
| solubility m-cresol: soluble, DMF: soluble, NMP: soluble, DMAC: soluble, DMSO: soluble | solubility m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble | solubility m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble | solubility m-cresol: soluble, DMAC: soluble, DMF: soluble, DMSO: soluble, NMP: soluble |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level - |
| conductivity 1 × 10-9 S/cm (pressed pellet, ASTM F8) | conductivity - | conductivity - | conductivity - |
| mol wt average Mw ~100,000 | mol wt average Mw ~20,000 | mol wt average Mw ~65,000 | mol wt average Mw ~10,000 |
| λmax 324 nm | λmax 328 nm | λmax 331 nm | λmax - |
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Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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What is the reactants and mediums used for fabrication? Most importantly for me, the oxidant used for polymerisation?
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Is the molecular weight absolute molecular weight?
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The average molecular weight value of approximately 100,000 daltons. This value is not an absolute molecular weight.
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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