Description

4-Bromo-Spiro[9H-Fluorene-9,9'-[9H]Xanthene] is a high-purity spiro-conjugated organic semiconductor building block featuring a rigid, orthogonal biaryl architecture that enables exceptional thermal stability and tunable optoelectronic properties. It serves as a critical intermediate for synthesizing advanced hole-transport materials (HTMs), thermally activated delayed fluorescence (TADF) emitters, and high-efficiency perovskite solar cell components. This compound is essential for R&D laboratories and specialty chemical manufacturers developing next-generation OLED displays, photovoltaic devices, and organic light-emitting transistors. Its structural precision and batch-to-batch consistency directly support reproducible device performance and scalable material synthesis.

Application

• Key precursor for high-performance hole-transport materials (HTMs) in perovskite solar cells (e.g., analogues of spiro-OMeTAD)
• Synthetic building block for TADF emitters in energy-efficient OLED displays and lighting panels
• Core scaffold in the development of organic photodetectors and phototransistors requiring high charge-carrier mobility
• Monomer for cross-coupling reactions (Suzuki, Stille, Buchwald–Hartwig) to construct spiro-conjugated polymers and dendrimers
• Research reagent for studying structure–property relationships in spirobifluorene-based optoelectronic materials
• Intermediate in the synthesis of non-doped emissive layers for solution-processed OLEDs
• Component in multi-resonant TADF (MR-TADF) systems leveraging its steric hindrance and electronic isolation

Basic Information

Product Name	4-Bromo-Spiro[9H-Fluorene-9,9'-[9H]Xanthene]
CAS No.	1609484-45-8
Molecular Formula	C27H15BrO
Molecular Weight	443.31 g/mol
Synonyms	4-Bromo-spiro[fluorene-9,9'-xanthene]; 4-Bromo-SFX; 4-Bromospiro[9H-fluorene-9,9'-xanthene]; 4-Bromo-9,9'-spirobi[fluorene-9,9'-xanthene]; 4-Bromo-9,9′-spirobifluorene-xanthene; 4-Bromo-SpiroF-X; 4-Bromo-Spiro[9H-fluorene-9,9′-xanthene]; 4-Bromo-9,9′-spirobi[9H-fluorene-9,9′-xanthene]
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Each batch is verified for identity, purity, and structural integrity using orthogonal analytical methods including HPLC, NMR, mass spectrometry, and elemental analysis. Certificates of Analysis (COA) are available upon request and include full chromatographic traces, spectral data, and impurity profiling. All manufacturing adheres to ISO 9001-certified quality management systems and supports compliance with REACH and applicable regional chemical regulations.

Storage

Preserve in a tightly closed container, protected from light. Store at 15–25°C under inert atmosphere (argon or nitrogen) to prevent oxidation. Keep away from moisture and direct sunlight. Ensure adequate ventilation in storage areas.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Assay (HPLC)	≥ 99.5%
Identity (NMR, MS)	Conforms
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Water (Karl Fischer)	≤ 0.2%
Residual Solvents (GC)	Meets ICH Q3C guidelines
Particle Size (D90)	≤ 50 µm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.