Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

735817

Sigma-Aldrich

Polypyrrole-block-poly(caprolactone)

0.3-0.7 wt. % (dispersion in nitromethane), contains p-toluenesulfonate as dopant

Synonym(s):

Biotron PP-NM, PCL-block-PPy

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
12352103
NACRES:
NA.23

form

liquid (dispersion)

Quality Level

100

contains

p-toluenesulfonate as dopant

composition

Biotron PP polymer, 0.3-0.7 wt. %
ethanol, 4-8 wt. %
nitromethane, 90-95 wt. %

concentration

0.3-0.7 wt. % (dispersion in nitromethane)

conductivity

10-40 S/cm (bulk)

General description

Sheet resistance, spin cast thin films: 10,000-50,000 Ohms/sq

Average transmittance: 70-90%

Biodegradble conducting polymer for bomedical applications. PCL diol blocks have average molecular weight 2000 and PPy block have an average molecular weight of 4000 with a 25% doping level. Good biocompatibility with expected weight loss of 40% at 200 days in pH=7 buffer.

Application

Thin films can be prepared by spin casting the nitromethane dispersion at 1000 rpm. To spin coat a thin film at 1000 RPM, 30 seconds to 1 minute is usually enough time to spread this dispersion. Thicker and more conducting films can be prepared by air spraying the dispersion on a substrate. Any substrate that is compatible can be used. Sprayed films can be dried at 30-40 °C, then pressed between two polished dye plates at 1000-10,000 psi to increase film density, strength and scratch resistance. The drying time of the air sprayed film depends on the thickness of the prepared film. Try weighing the sample periodically during drying.

Features and Benefits

The block copolymer structure renders the conducting polymer polypyrrole dispersible in organic solvents and biodegradable.

Caution

Store this product at room temperature (do not refrigerate or freeze). Severe settling and separation will normally occur. Agitate, sonicate, and filter prior to use. A plug of glass wool in a pipette can be used for easy filtration. The shelf life of this product will vary depending on how it is stored and handled. Product should be discarded if heavy aggregation occurs, or if sonication / filtering are inadequate to produce a good casting solution. When spray coating is used, the user should take every precaution necessarily to prevent exposure to solvent vapors from this product

Other Notes

Will settle over time. Must be sonicated before use

Legal Information

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Carc. 2 - Flam. Liq. 2 - Repr. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

66.9 °F

Flash Point(C)

19.4 °C

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCG1949
MKCF7670
MKBS2719V
MKBH7133V
MKBH7133

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Polypropylene composites for polymer electrolyte membrane fuel cell bipolar plates.
Yeetsorn R, et al.
Macromolecular Symposia, 264(1) (2008)
Synergic effect in electrical conductivity using a combination of two fillers in PVDF hybrids composites.
da Silva AB, et al.
European Polymer Journal, 49(10), 3318-3327 (2013)
Chemical Synthesis and Morphology of b?Naphthalene Sulfonic Acid-Doped Polypyrrole Micro/Nanotube.
Akinyeye R, et al.
Fullerenes, Nanotubes, and Carbon Nanostructures, 14 (2006)
Materials for Bioelectronic and
Biomedical Applications
Zhang Y, et al.
Material Matters, 8(1) null
Synthesis and characterization of polypyrrole-polyvinyl alcohol composite film with various organic acids dopants and theri gas sensing behaviour
Dupare DB and Aswar AS
Indian Journal of Chemical Technology, 18, 446-450 (2011)
View All Related Papers

Articles

Conducting Polymer Device Applications

The application of conducting polymers at the interface with biology is an exciting new trend in organic electronics research.

Optoelectronic Devices Based on Diketopyrrolopyrrole (DPP)-containing Conjugated Small Molecules

Optoelectronic Devices Based on Diketopyrrolopyrrole (DPP)-containing Conjugated Small Molecules

Understanding and Successfully Applying Materials for Dye-Sensitized Solar Cells

While dye sensitization as the basis for color photography has been accepted for a very long time,1 attempts to use this principle for the conversion of solar light to electricity generally had resulted only in very low photocurrents, below 100 nA/cm2.2

Progress for High Performance Tandem Organic Solar Cells

Professor Chen (Nankai University, China) and his team explain the strategies behind their recent record-breaking organic solar cells, reaching a power conversion efficiency of 17.3%.

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service