| Identification | Back Directory | [Name]
4-bromo-9,9'-Spirobi[9H-fluorene | [CAS]
1161009-88-6 | [Synonyms]
4-BroMo-9,9'-spirobifluorene
4-DroMo-9,9'-spirobifluorene
4-DibroMo-9,9'-spirobifluorene
4-bromo-9,9'-Spirobi[9H-fluorene
9,9'-Spirobi[9H-fluorene], 4-bromo-
4-Bromo-9,9'-spirobi[9H-fluorene] | [EINECS(EC#)]
222-180-1 | [Molecular Formula]
C25H14Br2 | [MDL Number]
MFCD16660920 | [MOL File]
1161009-88-6.mol | [Molecular Weight]
474.187 |
| Chemical Properties | Back Directory | [Melting point ]
157.0 to 161.0 °C | [Boiling point ]
517.2±29.0 °C(Predicted) | [density ]
1.52±0.1 g/cm3(Predicted) | [vapor pressure ]
0-0Pa at 20-50℃ | [storage temp. ]
Sealed in dry,Room Temperature | [form ]
powder to crystal | [color ]
White to Almost white | [InChI]
InChI=1S/C25H15Br/c26-23-15-7-14-22-24(23)18-10-3-6-13-21(18)25(22)19-11-4-1-8-16(19)17-9-2-5-12-20(17)25/h1-15H | [InChIKey]
GQXFSXMUBDPXBG-UHFFFAOYSA-N | [SMILES]
C12(C3=C(C=CC=C3)C3=C1C=CC=C3)C1=C(C=CC=C1)C1=C2C=CC=C1Br | [LogP]
6.5 at 25℃ and pH6.5 |
| Questions and Answers (Q&A) | Back Directory | [Description]
4-bromo-9, 9'-Spirobi[9H-fluorene is a kind of fluorene which is a polycyclic aromatic hydrocarbon. It can be used as the intermediate of organic light-emitting diodes (OLEDs)
| [References]
Jiang, Z., et al. "Novel oligo-9, 9'-spirobifluorenes through ortho-linkage as full hydrocarbon host for highly efficient phosphorescent OLEDs."Organic Letters 11.12(2009):2607-10.
Sébastien Thiery et al. "4-Pyridyl-9, 9′-spirobifluorenes as Host Materials for Green and Sky-Blue Phosphorescent OLEDs." Journal of Physical Chemistry C 119.11(2015):150204142546002.
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| Questions And Answer | Back Directory | [Application]
4-Bromo-9,9-spirodifluorene exhibits a spiroconjugation effect and has wide applications in optoelectronic materials, organic solar cells, organic nonlinear materials, and fluorescent probes. |
| Hazard Information | Back Directory | [Synthesis]
2-Bromo-1,1'-biphenyl (0.78 g, 3.34 mmol) was dissolved in dry THF (30 mL) under argon atmosphere, cooled to -78°C and stirred for 10 min at this temperature. A 2.5 M n-BuLi THF solution (1.47 mL, 3.67 mmol, 1.10 eq.) was then slowly injected via syri | [Advantages]
4-bromo-9,9'-Spirobi[9H-fluorene has a spiro conjugation effect, which is characterized by making the molecules coplanar and the electron cloud averaged, and controlling the effective conjugation length while ensuring the length of the spiro molecular chain; rigid planar structure, high fluorescence quantum yield; compared with other positions, the position of the 4-bromo-9,9-spirobifluorene structure has higher reactivity and is extremely easy to be modified. Due to the above advantages, the synthesis of 4-bromo-9,9'-Spirobi[9H-fluorene has received more and more attention, and it has a wide range of applications in optoelectronic materials, organic solar cells, organic nonlinear materials, and fluorescent probes. |
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