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Product Details
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Description |
2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene is a spirobifluorene (SBF) derivative and is used as a blue-emitting material in electroluminescent devices. The spirobifluorene linkage in the molecule helps in decreasing the crystallization tendency and also increases the colour stability by preventing the formation of aggregates or excimers. They possess high photoluminescence efficiency and good chemical stability. |
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Chemical Properties |
White to light yellow powder |
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Uses |
2,2',7,7'-Tetrabromo-9,9'-spirobifluorene is used in the preparation of OLEDs using amorphous compounds with spiro-bifluorene core. |
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Application |
Blue light emitting material in Organic Light Emitting Diodes (OLEDs). |
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General Description |
2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene is a spirobifluorene (SBF) derivative and is used as a blue-emitting material in electroluminescent devices. The spirobifluorene linkage in the molecule helps in decreasing the crystallization tendency and also increases the colour stability by preventing the formation of aggregates or excimers. They possess high photoluminescence efficiency and good chemical stability. |
Conjugated polymer networks based on spi...
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π-Expanded butterfly-like 2D fluorenes a...
Grubbs-type, Hoveyda-type, cyclic alkyl ...
We present here the synthesis of one ena...
A novel electron-rich small-molecule, 4,...
Heteroatomic hole transport materials ar...
A Lewis base catalyst Trip-SMe (Trip = t...
9,9'-spirobifluorene
2,2',7,7'-tetrabromo-9,9'-spirobifluorene
| Conditions | Yield |
|---|---|
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With bromine; iron(III) chloride;
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100% |
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With bromine; iron(III) chloride; In chloroform; for 3h; Ambient temperature;
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100% |
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With iron(III) chloride; bromine; In chloroform; at 0 - 20 ℃; for 4h;
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98% |
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With N-Bromosuccinimide; silver hexafluoroantimonate; 1-methylthiotriptycene; In 1,2-dichloro-ethane; at 20 ℃; for 15h; Inert atmosphere; Schlenk technique;
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97% |
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With iron(III) chloride; bromine; at 0 - 20 ℃; for 5h;
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95% |
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With iron(III) chloride; bromine; In chloroform; at 0 - 20 ℃; for 3h; Inert atmosphere; Schlenk technique;
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93% |
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With iron(III) chloride; bromine; In chloroform; at 0 - 20 ℃; for 3h; Inert atmosphere;
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91% |
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With bromine; iron(III) chloride; In chloroform; at 0 ℃;
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87% |
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With sulfuric acid; dihydrogen peroxide; sodium bromide; In water; 1,2-dichloro-ethane; at 20 ℃; for 48h;
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80% |
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With iron(III) chloride; bromine; In chloroform; at 20 ℃; for 120h; Inert atmosphere; Darkness;
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55% |
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With FeCl3; bromine; In dichloromethane;
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6.0 g (95%) |
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With bromine; iron(III) chloride; In chloroform;
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0.63 g (100%) |
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With bromine; In dichloromethane;
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With bromine; iron(III) chloride; In chloroform; at 20 ℃;
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With bromine; In dichloromethane;
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With bromine; acetic acid; Inert atmosphere;
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With iron(III) chloride; bromine;
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With iron(III) chloride; bromine; In chloroform;
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2,7-dibromo-9,9'-spirobi[fluorene]
2,2',7,7'-tetrabromo-9,9'-spirobifluorene
| Conditions | Yield |
|---|---|
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With bromine; In chloroform; at 0 ℃; for 3h;
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85% |
9,9'-spirobifluorene
9-fluorenone
2-Bromobiphenyl
9-((1,1'-biphenyl)-2-yl)-9H-fluoren-9-ol
2,2',7,7'-tetrakis(4''-(trimethylsilyl)phenyl)-9,9'-spirobifluorene
2,2',7,7'-Tetraphenyl-9,9'-spirobifluorene
2,2',7,7'-tetrakis(3,4,5-trifluorophenyl)spiro-9,9'-bifuorene
2,2',7,7'-tetrakis(3,5-bis(trifluoromethyl)phenyl)spiro-9,9'-bifuorene
CAS:28320-31-2
Molecular Formula:C<sub>15</sub>H<sub>13</sub>Br
Molecular Weight:273.17
CAS:171408-84-7
Molecular Formula:C25H14Br2
Molecular Weight:474.2
