792071 Sigma-Aldrich


Green Alternative

99% (HPLC)

Synonym: N2,N2,N2′,N2′,N7,N7,N7′,N7′-octakis(4-methoxyphenyl)-9,9′-spirobi[9H-fluorene]-2,2′,7,7′-tetramine, Spiro-OMeTAD

  • CAS Number 207739-72-8

  • Empirical Formula (Hill Notation) C81H68N4O8

  • Molecular Weight 1225.43

  •  MDL number MFCD12022511

  •  PubChem Substance ID 329768312

  •  NACRES NA.23



Related Categories Chemical Synthesis, Enabling Products, Greener Alternative Products, Hole Transport (HT) & Hole Injection Layer (HIL) Materials, Hole Transport Materials,
assay   99% (HPLC)
greener alternative product characteristics   Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
mp   243-248 °C
λmax   306 nm in dichloromethane
  385 nm in dichloromethane
fluorescence   λem 429 nm in dichloromethane
greener alternative category   Enabling
SMILES string   COC(C=C1)=CC=C1N(C2=CC=C(C=C2)OC)C(C=C3)=CC4=C3C(C=CC(N(C5=CC=C(C=C5)OC)C6=CC=C(C=C6)OC)=C7)=C7C84C9=C(C=CC(N(C%10=CC=C(C=C%10)OC)C%11=CC=C(C=C%11)OC)=C9)C%12=C8C=C(N(C%13=CC=C(C=C%13)OC)C%14=CC=C(C=C%14)OC)C=C%12
InChI   1S/C81H68N4O8/c1-86-65-29-9-53(10-30-65)82(54-11-31-66(87-2)32-12-54)61-25-45-73-74-46-26-62(83(55-13-33-67(88-3)34-14-55)56-15-35-68(89-4)36-16-56)50-78(74)81(77(73)49-61)79-51-63(84(57-17-37-69(90-5)38-18-57)58-19-39-70(91-6)40-20-58)27-47-75(79)76-48-28-64(52-80(76)81)85(59-21-41-71(92-7)42-22-59)60-23-43-72(93-8)44-24-60/h9-52H,1-8H3


General description

We are committed to bringing you Greener Alternative Products,which adhere to one or more of The 12 Principles of Greener Chemistry. This product is an enabling product used as a Hole Transport Material for high-performance solar cells and thus has been enhanced for energy efficiency. Click here for more information.


High-mobility material used for white OLEDs to increase hole injection and transport. It is the best solid-state hole transporting material, to date, used to replace the liquid electrolyte for DSSC solar cells, due to an excellent pore-filling property in nanoporous TiO2 film with pore size of around 30-50 nm; attributed to its small molecular size.


1, 5 g in glass bottle

Safety & Documentation

Safety Information

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


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number
Protocols & Articles


Organic Optoelectronics on Shape Memory Polymers

Center for Organic Photonics and Electronics (COPE), School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA *E-mail: bernard.kippelen@ece.gatech.e...
Canek Fuentes-Hernandez, Bernard Kippelen*
Material Matters, 2017, 12.3
Keywords: AGE, Adhesion, Atomic layer deposition, Biological processes, Catalysis, Ceramics, Deposition, Electronics, Environmental, Nanomaterials, Nanotubes, Oxidations, Photovoltaics, Polymerization reactions, Reductions, Semiconductor, Separation

Perovskite Solar Cells

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
Keywords: Crystallization, Degradations, Deposition, Materials Science, Nucleic acid annealing, Photovoltaics, Recombination, Reductions, Renewable energy, Solar cells

Recent Advances in Hybrid Halide Perovskites-based Solar Cells

Kuppuswamy Kalyanasundaram, Shaik. M. Zakeeruddin, Michaël Grätzel* Laboratory for Photonics and Interfaces (LPI) Swiss Federal Institute of Technology at Lausanne (EPFL) 1015 Lausanne, Switzerland *...
Kuppuswamy Kalyanasundaram, Shaik. M. Zakeeruddin, Michaël Grätzel
Material Matters, 2016, 11.1, 3
Keywords: Absorption, Atomic layer deposition, Capillary electrophoresis, Degradations, Deposition, Diffusion, Environmental, Infrared spectroscopy, Nanomaterials, Nanotubes, Nucleic acid annealing, Recombination, Semiconductor, Separation, Sol-gel, Solar cells, Solvents, Spectroscopy, Spin coating, Substitutions

The Use of Perovskite Metal Complexes in Photovoltaic Cells

Solar panels for homes and businesses have seen a rise in demand over the past few years as we move toward more environment-friendly and sustainable energy sources. In 2010, the average power from so...
Dr. Avery Luedtke
Senior Scientist, Sigma-Aldrich Materials Science.
Keywords: Deposition, Semiconductor, Solar cells

Ultra-High Efficiency Perovskite-Perovskite Tandem Solar Cells

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA *Email:
Zhen Li and Kai Zhu*
Material Matters, 2018, 13.1
Keywords: Absorption, Adhesion, Degradations, Deposition, Diffraction, Evaporation, Infrared spectroscopy, Nanotubes, Nucleic acid annealing, Oxidations, Photovoltaics, Recombination, Renewable energy, Semiconductor, Solar cells, Solvents, Ultraviolet-Visible spectroscopy, X-Ray diffraction

Understanding and Successfully Applying Materials for Dye-Sensitized Solar Cells

Hans Desilvestro, Yanek Hebting, Mikael Khan, Damion Milliken Dyesol, Queanbeyan NSW 2620, Australia Email:
Keywords: Absorption, Adhesion, Adsorption, Bacterial conjugations, Calorimetry, Deposition, Diffusion, Electronics, Extinction coefficient, Hydroxylations, Ligands, Mass spectrometry, Nucleic acid annealing, Oxidations, PAGE, Printed electronics, Recombination, Reductions, Semiconductor, Solar cells, Solvents

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?