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Merck

763888

Sigma-Aldrich

2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene

95% (HPLC)

Sinónimos:

2,2′,7,7′-Tetrabromo-9,9′-spirobi[9H-fluorene]

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About This Item

Fórmula empírica (notación de Hill):
C25H12Br4
Número de CAS:
Peso molecular:
631.98
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

assay

95% (HPLC)

form

solid

mp

395-400 °C

SMILES string

Brc1ccc2-c3ccc(Br)cc3C4(c2c1)c5cc(Br)ccc5-c6ccc(Br)cc46

InChI

1S/C25H12Br4/c26-13-1-5-17-18-6-2-14(27)10-22(18)25(21(17)9-13)23-11-15(28)3-7-19(23)20-8-4-16(29)12-24(20)25/h1-12H

InChI key

MASXXNUEJVMYML-UHFFFAOYSA-N

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.

Application

Blue light emitting material in Organic Light Emitting Diodes (OLEDs).

Features and Benefits

High glass-transition temperature, excellent thermal stability, soluble in common organic solvents, multi-layer devices can be fabricated by thermal cross-linking of cast films. Easy colour tunability through the introduction of low band gap co-monomers.

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Organic Light Emitting Diode (OLED) materials from spirobifluorene derivatives
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Physics Express, 4(2) (2014)
Amorphous poly-2, 7-fluorene networks
Marsitzky, D., Murray, J., Scott, J. C., & Carter, K. R.
Chemistry of Materials, 13(11), 4285-4289 (2001)
Shugo Sakaguchi et al.
The journal of physical chemistry. B, 122(36), 8614-8623 (2018-08-23)
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