Order Code: M2056A1
MSDS sheet


(excluding Taxes)


PJ71 is now available featuring:

  • High molecular weight, high purity (PJ71 is purified by soxhlet extraction with methanol, hexane and chlorobenzene under argon atmosphere)
  • Batch-specific GPC data (so you have confidence in what you are ordering and GPC data is always convenient for your thesis and publications)
  • Larger quantity orders (so you can plan your experiments with polymer from the same batch)


Batch Quantity Price
M2056A1 100 mg £368.3
M2056A1 250 mg £736.6
M2056A1 500 mg £1325.8
M2056A1 1 g £2386.5
M2056A1 5 g / 10 g* Please enquire

 *for 5 - 10 grams order quantity, the lead time is 4-6 weeks.

Batch Details

Batch Mw Mn PDI Stock Info
M2056A1 166,377 71,514 2.33 In stock

General Information

Full name Poly[[5,​6-​difluoro-​2-​(2-​hexyldecyl)​-​2H-​benzotriazole-​4,​7-​diyl]​-​2,​5-​thiophenediyl[4,​8-​bis[5-​(tripropylsilyl)​-​2-​thienyl]​benzo[1,​2-​b:4,​5-​b']​dithiophene-​2,​6-​diyl]​-​2,​5-​thiophenediyl]
Synonyms J71
CAS number 2035466-89-6
Chemical formula (C66H85F2N3S6Si2)n
Molecular weight See Batch Details table above
HOMO / LUMO HOMO = - 5.40 eV, LUMO = - 3.24 eV [1]
Solubility Chlorobenzene, dichlorobenzene
Classification / Family Benzodithiophene, BDT, BenzotriazoleHeterocyclic five-membered ring, Organic semiconducting materials, medium band gap polymers, Organic photovoltaics, Polymer solar cells, OFETs, Photodetectors
j71, pj71 chemical structureChemical structure of PJ71, CAS No. 2035466-89-6, Chemical formula (C66H85F2N3S6Si2)n.


PJ71, BDTT-FBTA back-boned donor-acceptor type polymer semiconductor, with tripropylsilyl substituents on thiophene groups that are conjugated side chains to the BDTT unit, it further down-shifts the HOMO energy level and thus increases the bandgap of the polymer (Eg = 2.16 eV).

The Si-binding atoms also have a significant effect on the crystallinity of the polymer thus the morphology of the device film due to the longer C–Si bond length compared with the C–C bond, giving the rise of stronger π-π stackings between each polymer chains.

Like PJ61, PJ71 is used for high efficiency polymer solar cells applications especially with ITIC series as NFAs.

Literature and Reviews

  1. 11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor, H. Bin et al., Nat. Commun., 7, 13651 (2016); doi:10.1038/ncomms13651.
  2. A near-infrared non-fullerene electron acceptor for high performance polymer solar cells, Y. Li et al., Energy Environ. Sci., 10, 1610 (2017); DOI: 10.1039/c7ee00844a.
  3. Medium Bandgap Polymer Donor Based on Bi(trialkylsilylthienyl-benzo[1,2-b:4,5-b′]-difuran) for High Performance Nonfullerene Polymer Solar Cells, H. Bin et al., Adv. Energy Mater., 1700746 (2017); DOI: 10.1002/aenm.201700746.