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Sigma-Aldrich

C8-BTBT

≥99% (HPLC)

Synonym(s):

2,7-Dioctyl[1]benzothieno[3,2-b][1]benzothiophene

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About This Item

Empirical Formula (Hill Notation):
C30H40S2
CAS Number:
583050-70-8
Molecular Weight:
464.77
UNSPSC Code:
12352103
PubChem Substance ID:
329765808
NACRES:
NA.23

assay

≥99% (HPLC)

form

powder

mp

108-112 °C

semiconductor properties

P-type (mobility=5.5 cm2/V·s)

SMILES string

CCCCCCCCC1=CC2=C(C=C1)C3=C(C(C=CC(CCCCCCCC)=C4)=C4S3)S2

InChI

1S/C30H40S2/c1-3-5-7-9-11-13-15-23-17-19-25-27(21-23)31-30-26-20-18-24(22-28(26)32-29(25)30)16-14-12-10-8-6-4-2/h17-22H,3-16H2,1-2H3

InChI key

YWIGIVGUASXDPK-UHFFFAOYSA-N

General description

C8-BTBT is a conducting polymer with [1]benzothieno[3,2-b][1]- benzothiophene (BTBT) as the base material for the development of air-stable semiconductors. It can form a spin coated thin film that can be used as a p-type semiconductor with charge mobility of 43 cm2V-1s-1. It exhibits highly ordered self-assembled monolayer (SAM) on graphene and hexagonal boron nitride (hBN) [1][2][3] with sheet resistance: <1,000 ohm/sq

Application

C8-BTBT is a conjugating polymer that can be used in a variety of organic electronics based applications which includes organic photovoltaic cells (OPV), organic light emitting diodes (OLEDs) and organic thin film transistors (OTFTs).[4][5][6]
High field-effect mobility of 5.5-5.7 cm2/Vs and high On/Off ratio of 109 [7]; solution-processed (solubility of 80 mg/mL) OFETs

Legal Information

Product of Nippon Kayaku

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCR1553
MKCP7411
MKCP2962
MKCM0972
MKCJ3748

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Darmawan; Peter;
Advances in Functional Materials, 22(21), 4577-4583 (2012)
Xiuzhen Xu et al.
ACS nano, 13(5), 5910-5919 (2019-05-09)
High-performance phototransistors made from organic semiconductor single crystals (OSSCs) have attracted much attention due to the high responsivity and solution-processing capability of OSSCs. However, OSSC-based phototransistors capable of dual-band spectral response remain a difficult challenge to achieve because organic semiconductors
Ultra-high mobility transparent organic thin film transistors grown by an off-centre spin-coating method.
Yuan Y, et al.
Nature Communications, 5(4), 3005-3005 (2014)
Hopping and band mobilities of pentacene, rubrene, and 2, 7-dioctyl [1] benzothieno [3, 2-b][1] benzothiophene (C8-BTBT) from first principle calculations.
Kobayashi H, et al.
J. Chem. Phys. , 139(1), 014707-014707 (2013)
Sara Pazoki et al.
The Journal of chemical physics, 154(12), 124704-124704 (2021-04-04)
Domain boundaries are a determining factor in the performance of organic electronic devices since they can trap mobile charge carriers. We point out the possibility of time-dependent motion of these boundaries and suggest that their thermal fluctuations can be a
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    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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    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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