Description

5,5'-Spirobi[Dibenzo[B,D]Silole] is a high-purity, specialized organosilicon compound with the CAS number 159-68-2. This material is valued for its unique spiro-conjugated structure, which imparts distinct electronic and optical properties critical for advanced material science. It is primarily sought by researchers and manufacturers in the fields of organic electronics, photovoltaics, and OLED (Organic Light-Emitting Diode) development.

Application

• OLED Emitter and Host Material: A key building block for the synthesis of novel light-emitting materials in display and lighting technologies.
• Organic Photovoltaic (OPV) Cells: Used in the development of donor or acceptor materials for efficient solar energy conversion.
• Organic Field-Effect Transistors (OFETs): Serves as a semiconductor component for flexible and printed electronics.
• Chemical Synthesis Intermediate: A versatile precursor for creating complex spiro-fused molecular architectures in pharmaceutical and material research.
• Fluorescent Probes and Sensors: Utilized in the design of sensitive detection systems due to its tunable photophysical characteristics.
• Academic and Industrial R&D: A fundamental compound for studying structure-property relationships in conjugated organic materials.

Basic Information

Product Name	5,5'-Spirobi[Dibenzo[B,D]Silole]
CAS No.	159-68-2
Molecular Formula	C25H16Si
Molecular Weight	344.48 g/mol
Synonyms	9,9'-Spirobi[9H-fluorene], 9,9'-Dimethylenefluorene; 9,9'-Spirobifluorene; 2,2'-Spirobi[9H-fluorene]; 9,9'-Spiro[9H-fluorene-9,9'-[9H]fluorene]; 2,2',7,7'-Tetraphenyl-9,9'-spirobifluorene (common precursor); SBF (common abbreviation); Spiro[fluorene-9,9'-xanthene] related core structure.
EINECS	Contact for details

Quality Control

Our 5,5'-Spirobi[Dibenzo[B,D]Silole] is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We support custom synthesis and purification to meet specific research or production-grade specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep the container sealed to prevent contamination and minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Standard Grade)
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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