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684465 Sigma-Aldrich

[6,6]-Phenyl C71 butyric acid methyl ester, mixture of isomers


Synonym: 3′H-Cyclopropa[8,25] [5,6]fullerene-C70-D5h(6)-3′butanoic acid, 3′Phenyl-3′H-cyclopropa[8,25] [5,6]fullerene-C70-D5h(6)-3′butanoic acid, methyl ester, [70]PCBM

  • CAS Number 609771-63-3

  • Empirical Formula (Hill Notation) C82H14O2

  • Molecular Weight 1030.99

  •  NACRES NA.23



Related Categories 3D Printing Materials for Research and Development, Acceptor Materials, Carbon Nanomaterials, Fullerene Acceptor Materials, Fullerenes,
Quality Level   100
assay   99%
solubility   chlorobenzene: soluble
  organic solvents: soluble
  toluene: soluble
Orbital energy   HOMO 6 eV 
  LUMO 3.9 eV 
semiconductor properties   N-type (mobility=0.1 cm2/V·s)
SMILES string   COC(=O)CCCC2(c1ccccc1)C34c5c6ccc7c8cc9Cc%10cc%11cc%12Cc%13cc%14c%15ccc6c3c%15c%16c%17c%18c%19c(c(c57)c8c%20c9c%10c%21c%11c%22c%12c%13c(c%14%16)c%18c%22c%21c%19%20)C24%17


General description

[6,6]-Phenyl C71 butyric acid methyl ester, a mixture of isomers ([70]PCBM) is a conductive polymer that is used as an electron acceptor based material which can provide a power conversion efficiency of 4-5%.

[6,6]-Phenyl C71 butyric acid methyl ester, mixture of isomers ([70]PCBM) is a high fullerene analog to [60]PCBM, which has an enhanced absorption of light in the visible region. It can be used in the development of electrochemical devices with a high current density.


[70]PCBM and PCDTBT can be used as an acceptor and a donor based fullerene derivative which can be used in the fabrication of organic photovoltaic. It may be used with P3HT as an electron transporting material for the fabrication of solar cells with higher power efficiency.

[70]PCBM can be blended with a variety of electron donors, which include P3HT and MDMO-PPV for the fabrication of polymeric solar cells with a high power conversion efficiency (PCE).


100, 500 mg in glass insert

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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