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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) 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).
High field-effect mobility of 5.5-5.7 cm2/Vs and high On/Off ratio of 109 ; solution-processed (solubility of 80 mg/mL) OFETs

Legal Information

Product of Nippon Kayaku

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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Molecular ordering of high-performance soluble molecular semiconductors and re-evaluation of their field-effect transistor characteristics.
Izawa T, et al.
Advanced Materials, 20(18), 3388-3392 (2008)
Orientation-dependent energy level alignment and film growth of 2, 7-diocty [1] benzothieno [3, 2-b] benzothiophene (C8-BTBT) on HOPG.
Lyu L, et al.
J. Chem. Phys. , 144(3), 034701-034701 (2016)
Hideaki Ebata et al.
Journal of the American Chemical Society, 129(51), 15732-15733 (2007-11-30)
2,7-Dialkyl[1]benzothieno[3,2-b]benzothiophenes were tested as solution-processible molecular semiconductors. Thin films of the organic semiconductors deposited on Si/SiO2 substrates by spin coating have well-ordered structures as confirmed by XRD analysis. Evaluations of the devices under ambient conditions showed typical p-channel FET responses
Solution-processable organic single crystals with bandlike transport in field-effect transistors.
Liu C, et al.
Advanced Materials, 23(4), 523-526 (2011)
Zhimin Chai et al.
ACS applied materials & interfaces, 10(21), 18123-18130 (2018-05-09)
Assembly of organic semiconductors with ordered crystal structure has been actively pursued for electronics applications such as organic field-effect transistors (OFETs). Among various film deposition methods, solution-based film growth from small molecule semiconductors is preferable because of its low material
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