Description

1,3,2-Dioxaborole, 2,2',2'',2'''-(9,9'-Spirobi[9H-Fluorene]-2,2',7,7'-Tetrayl)Tetrakis[4,4,5,5-Tetramethyl- is a sophisticated, high-purity organic semiconductor intermediate featuring a rigid spirobifluorene core with four pinacol boronate ester functionalities. This compound matters for its exceptional role as a key building block in the synthesis of advanced electronic materials, offering precise structural control and excellent thermal stability. It is critically needed by R&D and production teams in the organic light-emitting diode (OLED), organic photovoltaic (OPV), and organic field-effect transistor (OFET) industries.

Application

• OLED Emitter and Host Material Synthesis: Serves as a crucial monomer for constructing high-efficiency, color-pure phosphorescent and thermally activated delayed fluorescence (TADF) emitters and host materials.
• Polymer Synthesis for Electronics: Used in Suzuki-Miyaura cross-coupling polymerization to create conjugated polymers for flexible displays and printed electronics.
• Organic Photovoltaic (OPV) Active Layer Components: A fundamental precursor for synthesizing electron donor or acceptor materials in next-generation solar cells.
• Organic Field-Effect Transistor (OFET) Semiconductors: Enables the production of high-mobility p-type or n-type organic semiconductors for flexible circuits and sensors.
• Perovskite Solar Cell Additives: Employed in the development of molecular additives or interface layers to enhance perovskite crystal growth and device stability.
• Cross-coupling Reactions in Fine Chemical Synthesis: Acts as a versatile boron reagent in palladium-catalyzed cross-couplings for constructing complex biaryl structures in pharmaceutical and agrochemical research.
• Material Science Research: Used in academic and industrial labs for developing novel π-conjugated systems with tailored optical and electronic properties.

Basic Information

Product Name	1,3,2-Dioxaborole, 2,2',2'',2'''-(9,9'-Spirobi[9H-Fluorene]-2,2',7,7'-Tetrayl)Tetrakis[4,4,5,5-Tetramethyl-
CAS No.	934391-22-7
Molecular Formula	C61H68B4O8
Molecular Weight	949.59 g/mol
Synonyms	2,2',7,7'-Tetrakis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9'-spirobi[9H-fluorene]; 9,9'-Spirobi[9H-fluorene]-2,2',7,7'-tetrayltetrakis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane); 2,2',7,7'-Tetraboronic acid pinacol ester spirobifluorene; SBF-4Bpin; Spirobifluorene-2,2',7,7'-tetrayl tetrakis(boronic acid pinacol ester); 2,7-Diboronic acid pinacol ester spirobifluorene (common misnomer); 9,9'-Spirobi[fluorene]-2,2',7,7'-tetrayltetraboronic acid pinacol ester; 2,2',7,7'-Tetrakis(4,4,5,5-tetramethyl-1,3,2-dioxaboranyl)-9,9'-spirobifluorene
EINECS	Contact for details

Quality Control

This high-value electronic chemical is produced under strict quality control in dedicated facilities. Every batch is characterized using advanced analytical techniques including NMR (1H, 13C, 11B), HPLC, and GC-MS to ensure structural integrity and ultra-high purity suitable for sensitive electronic applications. Certificates of Analysis (COA) with full spectral data are provided, and materials can be supplied to meet specific customer R&D or cGMP guidelines for advanced material production.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under an inert atmosphere (argon or nitrogen) in a cool, dry place. For long-term stability, storage at 2-8°C is recommended. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (H-NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Area %)
Purity (NMR)	≥ 97.0%
Residual Solvents (GC)	Meet ICH guidelines
Heavy Metals (ICP-MS)	< 10 ppm
Chloride Content	< 50 ppm
Water Content (KF)	< 0.5%

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