FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code B561-500mg
Price $375 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


IDTB6-2CHO, high purity monomer

For the synthesis of non-fullerene acceptors used in highly efficient organic solar cell devices


4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-dicarbaldehyde (IDTB6-2CHO), is a derivative of indacenodithiophene (IDT) with extended conjugation to the hexylphenyl side chains. IDT derivatives are electron rich and used as building blocks for the synthesis of non-fullerene acceptors (NFAs) that are employed in highly efficient organic solar cells devices.

Fused IDT core of IDTB6-2CHO is believed to have the function of facilitating π-electron delocalization and improving intermolecular π–π stacking, thus, to promote the intrinsic charge carrier mobility.

IDTB6-2CHO Electron-rich building block

Electron-rich building block

For preparation of non-fullerene acceptors (NFAs)

Enhanced intermolecular π–π stacking

Enhanced intermolecular stacking

Facilitated by the π-electron delocalisation

Worldwide shipping for 1884694-93-2

Worldwide shipping

Quick and reliable shipping

Excellent charge carrier mobility

Excellent charge carrier mobility

Induced by the optimal electron-hopping

General Information

CAS Number 1884694-93-2
Chemical Formula C66H74O2S2
Molecular Weight 963.42 g/mol
Full Name 4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-dicarbaldehyde
Synonyms IDT6B-2CHO
2,7-dicarbaldehyde-4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene
Classification / Family Indacenodithiophene (IDT), Monomer and intermediates, ITIC, None-fullerene acceptors (NFAs), NFA-OSCs, printing electronics 

Chemical Structure

idtb6-2cho, 1884694-93-2
Chemical structure of IDTB6-2CHO, 1884694-93-2

Product Details

Purity >98% (by NMR)
Melting Point N/A
Appearance Yellow powder/crystals

MSDS Documentation

IDTB6-2CHO MSDSIDTB6-2CHO MSDS Sheet

Literature and Reviews

  1. The Crucial Role of End Group Planarity for Fused-Ring Electron Acceptors in Organic Solar Cells, J. Rech et al., Mater. Chem. Front., 2019,3, 1642-1652 (2019); DOI: 10.1039/C9QM00314B.
  2. An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses, Z. Fei et al., Adv.Mater.2018, 30, 1705209 (2018); DOI: 10.1002/adma.201705209.
  3. Achievement of High Voc of 1.02 V for P3HT-Based Organic Solar Cell Using a Benzotriazole-Containing Non-Fullerene Acceptor, B. Xiao et al., Adv. Energy Mater., 1602269 (2017); DOI: 10.1002/aenm.201602269.
  4. Extension of indacenodithiophene backbone conjugation enables efficient asymmetric A–D-A type non-fullerene acceptors, J. Song et al., J. Mater. Chem. A, 6, 18847-18852 (2018); DOI:10. 1039/C8TA07334A.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top