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C8-BTBT

C8-BTBT Structure
C8-BTBT structure
CAS No.
583050-70-8
Chemical Name:
C8-BTBT
Synonyms
BTBT8;EA506;C8-BTBT;DiC8-BTBT;C8-BTBT >=99% (HPLC);2,7-Dioctyl[1]benzothieno[3,2-b][1];2,7-Dioctyl[1]benzothieno[3,2-b][1]benzothiophene;2,7-(1-octyl)[1]benzothieno[3,2-b][1]benzothiophene;2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene;[1]Benzothieno[3,2-b][1]benzothiophene, 2,7-dioctyl-
CBNumber:
CB82734778
Molecular Formula:
C30H40S2
Molecular Weight:
464.77
MDL Number:
MFCD28016330
MOL File:
583050-70-8.mol
MSDS File:
SDS
Last updated:2025-07-29 08:42:59
Product description Number Pack Size Price
C8-BTBT ≥99% (HPLC) 747092 100mg $525
C8-BTBT ≥99% (HPLC) 747092 250mg $869
C8-BTBT C015010 100mg $420
2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene 95%+ CM336747 100mg $181
2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene 95%+ CM336747 500mg $683
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C8-BTBT Properties

Melting point 108-112°C
Boiling point 595.9±45.0 °C(Predicted)
Density 1.069±0.06 g/cm3(Predicted)
storage temp. Refrigerator, Under inert atmosphere
solubility Chloroform (Slightly), Ethyl Acetate (Slightly, Sonicated), Methanol (Slightly)
form Solid
color White to Light Yellow
semiconductor properties P-type (mobility=5.5cm2/V·s)
InChI 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
InChIKey YWIGIVGUASXDPK-UHFFFAOYSA-N
SMILES C12C3=CC=C(CCCCCCCC)C=C3SC=1C1=CC=C(CCCCCCCC)C=C1S2
UNSPSC Code 12352103
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P305+P351+P338
WGK Germany  3
HS Code  29349990

C8-BTBT price More Price(6)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 747092 C8-BTBT ≥99% (HPLC) 583050-70-8 100mg $525 2023-06-20 Buy
Sigma-Aldrich 747092 C8-BTBT ≥99% (HPLC) 583050-70-8 250mg $869 2023-06-20 Buy
TRC C015010 C8-BTBT 583050-70-8 100mg $420 2021-12-16 Buy
Chemenu CM336747 2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene 95%+ 583050-70-8 100mg $181 2021-12-16 Buy
Chemenu CM336747 2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene 95%+ 583050-70-8 500mg $683 2021-12-16 Buy
Product number Packaging Price Buy
747092 100mg $525 Buy
747092 250mg $869 Buy
C015010 100mg $420 Buy
CM336747 100mg $181 Buy
CM336747 500mg $683 Buy

C8-BTBT Chemical Properties,Uses,Production

Uses

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

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

Synthesis

[1]Benzothieno[3,2-b][1]benzothiophene, 2,7-di-1-octyn-1-yl-

1003601-92-0

C8-BTBT

583050-70-8

The general procedure for the synthesis of 2,7-dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene from the compound (CAS:1003601-92-0) is as follows: the compound of formula (5) obtained in synthetic Example 1 (300 mg, 0.66 mmol) was added to anhydrous toluene (10 mL) with Pd/C (70 mg). The reaction mixture was depressurized and purged with hydrogen using an aspirator, and this operation was repeated several times. Subsequently, the reaction mixture was stirred for 8 hours. After completion of the reaction, the solvent was removed by distillation. The product was purified by column chromatography (silica gel, hexane, Rf = 0.6) to give 286 mg of product in 94% yield. Further recrystallization from hexane gave a colorless powdery solid (250 mg, 82% yield) as shown in formula (6). This compound corresponds to compound 16 in Table 1. The characterization data were as follows: 1H-NMR (400 MHz, CDCl3): δ 7.75 (d, J = 8.2 Hz, 2H), 7.68 (d, J = 1.5 Hz, 2H), 7.26 (dd, J = 8.2, 1.5 Hz, 2H), 2.74 (t, J = 7.7 Hz, 4H). 1.69 (q, 4H), 1.27-1.34 (m, 20H), 0.88 (t, J = 6.7 Hz, 6H); 13C-NMR (400 MHz, CDCl3): 142.4, 140.0, 132.5, 131.1, 125.8, 123.3, 121.0, 36.1, 31.9, 31.7, 29.5 , 29.33, 29.27, 22.68, 14.1; MS (70 eV, DI) m/z = 464 (M+); melting point 112-113 °C; elemental analysis (C30H40S2) calculated values: C, 77.53; H, 8.67; measured values: C, 77.39; H, 8.67.

References

[1] Journal of the American Chemical Society, 2007, vol. 129, # 51, p. 15732 - 15733
[2] Patent: EP2077590, 2013, B1. Location in patent: Paragraph 0059

C8-BTBT Preparation Products And Raw materials

Raw materials

[1]Benzothieno[3,2-b][1]benzothiophene, 2,7-di-1-octyn-1-yl- Hydrogen Palladium hydroxide Toluene

Preparation Products

C8-BTBT Suppliers

Global( 86)Suppliers
Supplier Tel Email Country ProdList Advantage
April Scientific Inc.
+886919825322 sales@aprilsci.com China 301 58
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD 		+86-13017695106 +86-13676922317 jiuyitime@fdachem.com China 16515 58
Yunbio Tech Co.,Ltd. 		+86-010-60605551 +86-18046518538 yunbiochem@126.com China 321 58
career henan chemical co 		+86-0371-86658258 +8613203830695 factory@coreychem.com China 29799 58
SHANGHAI T&W PHARMACEUTICAL CO., LTD. 		+86-021-61551413 +8618813727289 contact@trustwe.com China 5743 58
Zhengzhou Alfa Chemical Co.,Ltd 		+8618530059196 sale04@alfachem.cn China 11907 58
Shanghai UCHEM Inc. 		+862156762820 +86-13564624040 sales@myuchem.com China 8422 58
Hefei Hirisun Pharmatech Co., Ltd 		+8615056975894 shawn@hirisunpharm.com CHINA 9911 58
Suzhou Laing Biotechnology Co.,Ltd 		+86-13004516015 +86-18149392822 christina@laingbiotec.com China 777 58
Hangzhou MolCore BioPharmatech Co.,Ltd. 		+86-057181025280; +8617767106207 sales@molcore.com China 49734 58
Supplier Advantage
April Scientific Inc.
58
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD 		58
Yunbio Tech Co.,Ltd. 		58
career henan chemical co 		58
SHANGHAI T&W PHARMACEUTICAL CO., LTD. 		58
Zhengzhou Alfa Chemical Co.,Ltd 		58
Shanghai UCHEM Inc. 		58
Hefei Hirisun Pharmatech Co., Ltd 		58
Suzhou Laing Biotechnology Co.,Ltd 		58
Hangzhou MolCore BioPharmatech Co.,Ltd. 		58

View Lastest Price from C8-BTBT manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2,7-(1-octyl)[1]benzothieno[3,2-b][1]benzothiophene pictures 2025-10-13 2,7-(1-octyl)[1]benzothieno[3,2-b][1]benzothiophene
583050-70-8
 US $3.00-9.00 / kg 1kg 99%min 50kg ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
C8-BTBT pictures 2025-07-25 C8-BTBT
583050-70-8
 US $0.00 / kg 1kg 99% 10000KGS Shaanxi Dideu New Materials Co. Ltd
[1]Benzothieno[3,2-b][1]benzothiophene, 2,7-dioctyl- pictures 2019-12-26 [1]Benzothieno[3,2-b][1]benzothiophene, 2,7-dioctyl-
583050-70-8
 US $0.10 / KG 1KG 95%-99% 1kg; 100kg Career Henan Chemical Co
  • C8-BTBT pictures
  • C8-BTBT
    583050-70-8
  • US $0.00 / kg
  • 99%
  • Shaanxi Dideu New Materials Co. Ltd
2,7-Dioctyl[1]benzothieno[3,2-b][1]benzothiophene DiC8-BTBT C8-BTBT C8-BTBT >=99% (HPLC) [1]Benzothieno[3,2-b][1]benzothiophene, 2,7-dioctyl- 2,7-Dioctyl[1]benzothieno[3,2-b][1] 2,7-Dioctylbenzo[b]benzo[4,5]thieno[2,3-d]thiophene BTBT-C8 2,7-Dioctyl[1]benzothieno[3,2-b][1]benzothiophene EA506 BTBT8 2,7-(1-octyl)[1]benzothieno[3,2-b][1]benzothiophene 583050-70-8 C30H40S2