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702471

Sigma-Aldrich

PTAA

greener alternative

a poly(triaryl amine) semiconductor

Synonym(s):

Poly(triaryl amine), Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]

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About This Item

Linear Formula:
[C6H4N(C6H2(CH3)3)C6H4]n
CAS Number:
1333317-99-9
MDL number:
MFCD28045008
UNSPSC Code:
32111503
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

100

form

solid

mol wt

average Mn 7,000-10,000 (GPC)

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

mp

>400 °C
>400 °C

Mw/Mn

2‑2.2

application(s)

battery manufacturing
semiconductor

greener alternative category

, Enabling

semiconductor properties

P-type (mobility=10−3 - 10−2 cm2/V·s)

General description

PTAA, poly(triaryl amine), semiconductor is an organic p-type semiconductor with hole mobilities of 10−3 up to 10−2 cm2 V−1 s−1 which results in a high carrier mobility. It is a stable glassy polymer and has good ionization potential for thick film diodes.[1][2]
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to Enabling category of greener alternatives thus aligns with "Design for energy efficency". Hole transport organic materials allow perfect energy level alignment with the absorber layer and therefore efficient charge collection, are prone to degradation in ambient conditions.Click here for more information.

Application

Polytriarylamine Semiconductors
PTAA can be coated as a substrate material which is used for the transportation of hole in the fabrication of many devices like perovskite solar cells,[3][4][5] polymeric light emitting diodes[6] and organic field effect transistors.[7]

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCX0255
MKCV4252
MKCT2184
MKCS9014
MKCV1873

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Triarylamine-containing poly (perfluorocyclobutane) as hole-transporting material for polymer light-emitting diodes.
Liu S, et al.
Macromolecules, 33(10), 3514-3517 (2000)
Dielectric function and degradation process of poly (triarylamine)(PTAA).
Sendner M, et al.
Organic Electronics, 15(11), 2959-2963 (2014)
Solvent engineering for high-performance inorganic-organic hybrid perovskite solar cells.
Jeon NJ, et al.
Nature Materials, 13(9), 897-897 (2014)
Enhanced charge separation in ternary P3HT/PCBM/CuInS2 nanocrystals hybrid solar cells.
Lefrancois A, et al.
Scientific Reports, 5(9), 7768-7768 (2015)
Enhanced infrared spectroscopy of organic field effect transistor (OFET) materials
Sendner M and Pucci A
AIP Conference Proceedings, 1646(1), 115-121 (2015)
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Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

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  3. What is the molecular weight of PTAA with product no. 702471? and how much-optimized quality of this product is needed in one milliliter of solvent (Toluene) to coat it as a Hole transporting layer for perovskite solar cells. share some PSCs articles.

    1 answer

    1. The number molecular weight is reported in the lot-specific Certificate of Analysis. Please access the link below to review a sample or lot specific Certificate:
      https://www.sigmaaldrich.com/product/aldrich/702471#product-documentation

      The average molecular weight of this material is not reported. However, historical data indicates a range of 17,000 - 20,000 g/mol.

      Unfortunately, the concentration of PTAA in toluene for Hole transporting layer coating is not tested. Here is a review paper as a reference:
      PTAA as Efficient Hole Transport Materials in Perovskite Solar Cells: A Review
      Sol. RRL 2022, 6, 2200234.

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