Description

Spiro[4H-Cyclopenta[2,1-B:3,4-B']Dithiophene-4,9'-[9H]Fluorene] is a high-performance organic semiconductor building block, also known as a spiro-conjugated core. This compound is valued for its rigid, three-dimensional molecular structure which promotes excellent thermal stability and morphological control in thin films. It is a critical material for researchers and manufacturers developing next-generation organic electronic devices. The CAS number for this compound is 28687-00-5.

Application

This advanced organic material serves as a key component in the synthesis of high-efficiency optoelectronic materials. Its primary applications include:

• Organic Light-Emitting Diodes (OLEDs): As a core building block for host, hole-transport, or emissive materials in display and lighting technologies.
• Organic Photovoltaics (OPVs/Perovskite Solar Cells): Used in the development of donor or acceptor materials for efficient light absorption and charge transport.
• Organic Field-Effect Transistors (OFETs): As a semiconductor backbone to create high-mobility, solution-processable electronic components.
• Chemical Research & Development: A versatile intermediate for synthesizing novel spiro-fused conjugated systems and exploring structure-property relationships.
• Printed Electronics: Enables the formulation of inks for flexible and large-area electronic circuits due to its favorable solution-processing characteristics.

Basic Information

Product Name	Spiro[4H-Cyclopenta[2,1-B:3,4-B']Dithiophene-4,9'-[9H]Fluorene]
CAS No.	28687-00-5
Molecular Formula	C23H12S2
Molecular Weight	352.47 g/mol
Synonyms	Spiro(cyclopenta[2,1-b:3,4-b']dithiophene-4,9'-fluorene); 9,9'-Spirobi[9H-fluorene]-2,2',7,7'-tetrathiol; Spiro-CPDT-Fluorene; Spiro[cyclopentadithiophene-fluorene]; 4H-Cyclopenta[2,1-b:3,4-b']dithiophene, 4,9'-dihydrospiro[fluorene-9,4'-]-; Spirobifluorene-dithiophene derivative
EINECS	Contact for details

Quality Control

Our Spiro[4H-Cyclopenta[2,1-B:3,4-B']Dithiophene-4,9'-[9H]Fluorene] is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency essential for sensitive electronic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C). This material is light-sensitive (store away from light). For long-term storage, consider storing under an inert atmosphere to prevent potential oxidation.

Specification

Item	Specification
Appearance	Yellow to light brown powder or crystals
Identification (HPLC/IR)	Conforms to reference standard
Purity (HPLC)	≥ 98.0% (Standard Grade)
Purity (HPLC)	≥ 99.0% (High Purity Grade)
Melting Point	Contact for details
Residue on Ignition	< 0.1%
Heavy Metals (as Pb)	< 10 ppm

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