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Product Code B1021-10g
Price $194 ex. VAT

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High-Purity 9,9′-Spirobifluorene

With great thermal and chemical stabilities, spiro compounds with 9,9′-spirobifluorene core of inherent rigid structure have attracted great attention as organic functional materials.


Structurally, 9,9′-Spirobifluorene (SBF) can be considered as two fluorenes joined together at 9,9'-positions. 9,9'-Spirobifluorene has received considerable interest for organic electronics, featuring a sp3-hybridized carbon with two perpendicularly aligned π systems. The two fluorene units through a shared spiro-carbon are hence maintained in orthogonal planes.

Spiro compounds with 9,9′-spirobifluorene core of inherent rigid structure thus have attracted great attention as organic functional materials for their specific physical properties, such as high glass transition temperatures, good solubility and their amorphous nature. The prominent spiro-structure can also very effectively suppresses excimer formation frequently observed in the solid state of many fluorescent dyes. Particularly, spirobifluorenes are known for their excellent thermal and chemical stabilities, high quantum efficiencies, as well as nondispersive ambipolar carrier transporting properties.

9,9'-spirobifluorene-based conjugated microporous organic polymers (COPs) can be obtained directly from unsubstituted spirobifluorene using an inexpensive FeCl3 mediator via either oxidative polymerization, Friedel-Crafts polymerization, or competitive oxidative/Friedel-Crafts polymerization. Those COPs show large surface areas (940 – 1980 m2g-1) and high micropore volumes (0.5 – 0.9 cm3g-1).

General Information

CAS Number 159-66-0
Chemical Formula C25H16
Full Name 9,9′-Spirobifluorene
Molecular Weight 316.39 g/mol
Synonyms 9,9′-Spirobi[9H-fluorene], SBF
Classification / Family Spirobifluorene, semiconductor synthesis intermediates, low band gap polymers, OLED, OFETs, organic photovoltaics

Chemical Structure

9,9′-Spirobifluorene (SBF) chemical structure, CAS 159-66-0
9,9′-Spirobifluorene (SBF) chemical structure, CAS 159-66-0

Product Details

Purity >99% (HPLC)
Melting Point Tm = 202 °C
Appearance White powder/crystals

MSDS Documentation

9,9′-Spirobifluorene9,9′-Spirobifluorene MSDS Sheet

Literature and Reviews

  1. Hole Mobilities of 2,7- and 2,2′-Disubstituted 9,9′-Spirobifluorene-Based Triaryldiamines and Their Application as Hole Transport Materials in OLEDs, Y. Liao et al., Chem. Mater. , 19, 6350–6357 (2007); DOI: 10.1021/cm702230.
  2. 2-Substituted vs 4-substituted-9,90-spirobifluorene host materials for green and blue phosphorescent OLEDs: a structureeproperty relationship study, S. Thiery et al., Tetrahedorn, 70, 6337-6351 (2014); DOI: 10.1016/j.tet.2014.05.081.
  3. Synthesis, Structures, and Photoinduced Electron Transfer Reaction in the 9,9′-Spirobifluorene-Bridged Bipolar Systems, K. Wong et al., J. Org. Chem. 2006, 71, 456-465 (2006); DOI: 10.1021/jo0512047.
  4. Fluorinated 9,9′-spirobifluorene derivatives as host materials for highly efficient blue organic light-emitting devices, Z. Li et al., J. Mater. Chem. C, 1, 2183-2192 (2013); 10.1039/C3TC00466J.
  5. White organic light-emitting diodes based on 2,7-bis(2,2-diphenylvinyl)-9,9′-spirobifluorene: Improvement in operational lifetime, C. Chuen et al., Appl. Phys. Lett., 85, 4609 (2004); DOI: 10.1063/1.1824178.
  6. Bis(diphenylamino)-9,9′-spirobifluorene functionalized Ir(iii) complex: a conceptual design en route to a three-in-one system possessing emitting core and electron and hole transport peripherals, H. Chen et al.,J. Mater. Chem., 21, 768-774 (2011); DOI: 10.1039/C0JM02097D.
  7. 9,9′-Spirobifluorene and 4-phenyl-9,9′-spirobifluorene: pure hydrocarbon small molecules as hosts for efficient green and blue PhOLEDs, S. Thiery et al., J. Mater. Chem. C, 2, 4156-4166 (2014); DOI: 10.1039/C4TC00171K.
  8. Synthesis of 9,9'-Spirobifluorene-Based Conjugated Microporous Polymers by FeCl3-mediated Polymerization, A. Modak et al., Polym. Chem., 7, 1290-1296 (2016); 10.1039/C5PY01900A.
  9. Highly efficient and stable organic light-emitting diode using 4,4′-bis(N-carbazolyl)-9,9′-spirobifluorene as a thermally stable host material, T. Tsuzuki et al., Appl. Phys. Lett., 94, 033302 (2009); DOI: 10.1063/1.3073709.

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.

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