Skip to Content
Merck
All Photos(1)

Documents

763888

Sigma-Aldrich

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

95% (HPLC)

Synonym(s):

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

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C25H12Br4
CAS Number:
128055-74-3
Molecular Weight:
631.98
MDL number:
MFCD08704220
UNSPSC Code:
12352103
PubChem Substance ID:
329767083
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
GHS07

Signal Word

Warning

Hazard Statements

H302,H319

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Organic Light Emitting Diode (OLED) materials from spirobifluorene derivatives
R. N. Jana, S. Chakraborty, R. Banerjee
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)
Nanostructures composed of conjugated polymers or π-conjugated molecules provide sensing platforms with large specific surface areas. One of the feasible approaches to accessing such nanostructured miniaturized sensors with ultrahigh sensitivity is to develop a network of organic nanowires with optical/electronic

Articles

Stretchable Electroluminescent Devices

Self-healing soft electronic materials offer potential cost savings and reduced electronic waste.

Stretchable Electroluminescent Devices

Self-healing soft electronic materials offer potential cost savings and reduced electronic waste.

Stretchable Electroluminescent Devices

Self-healing soft electronic materials offer potential cost savings and reduced electronic waste.

Stretchable Electroluminescent Devices

Self-healing soft electronic materials offer potential cost savings and reduced electronic waste.

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

Contact Technical Service