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Product Code B561-500mg
Price £300 ex. VAT

IDTB6-2CHO, high purity monomer

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


Specifications | MSDS | Literature and Reviews


4,4,9,9-Tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-dicarbaldehyde (IDTB6-2CHO), CAS number 1884694-93-2, 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

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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.
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