Description

1-Butyl-2-(2-[3-[2-(1-Butyl-1H-Benzo[Cd]Indol-2-Ylidene)Ethylidene]-2-Phenylcyclopent-1-Enyl]Vinyl)Benzo[Cd]Indolium Tetrafluoroborate is a specialized near-infrared (NIR) absorbing cyanine dye salt, valued for its exceptional photophysical properties and stability. This compound is a critical functional material for advanced optical and electronic applications, where precise light absorption and emission characteristics are paramount. It is primarily sought by researchers and manufacturers in the fields of optical data storage, photodynamic therapy, and as a sensitizer for dye-sensitized solar cells (DSSCs).

Application

• Optical Data Storage Media: As a key NIR-absorbing dye for recordable (R) and rewritable (RW) optical discs, including CD-R, DVD-R, and Blu-ray formats.
• Photodynamic Therapy (PDT): Utilized as a photosensitizer agent in medical research for targeted cancer cell destruction upon activation by specific light wavelengths.
• Dye-Sensitized Solar Cells (DSSCs): Functions as a light-harvesting sensitizer to improve the photon-to-electron conversion efficiency of next-generation solar panels.
• Non-Linear Optics (NLO): Employed in the research and development of optical limiters, switches, and other photonic devices due to its strong optical nonlinearity.
• Laser Technology: Used as a gain medium or saturable absorber in the tuning and stabilization of NIR laser systems.
• Biomedical Imaging: Serves as a contrast agent or fluorescent probe in the development of bio-imaging and diagnostic assays.
• Security Inks & Taggants: Incorporated into inks for anti-counterfeiting applications, currency, and secure documents due to its unique spectral signature.

Basic Information

Product Name	1-Butyl-2-(2-[3-[2-(1-Butyl-1H-Benzo[Cd]Indol-2-Ylidene)Ethylidene]-2-Phenylcyclopent-1-Enyl]Vinyl)Benzo[Cd]Indolium Tetrafluoroborate
CAS No.	913627-83-5
Molecular Formula	C46H45BF4N2
Molecular Weight	688.48 g/mol
Synonyms	NIR Cyanine Dye BF4 Salt; 1-Butyl-2-[(1E,3E)-3-(2-{3-[(1E)-2-(1-Butyl-1H-benzo[cd]indol-2-ylidene)ethylidene]-2-phenylcyclopent-1-en-1-yl}ethenyl)-1H-benzo[cd]indol-1-ium-2-yl] Tetrafluoroborate; Benzo[cd]indolium, 1-butyl-2-[2-[3-[2-(1-butyl-1H-benzo[cd]indol-2-ylidene)ethylidene]-2-phenyl-1-cyclopenten-1-yl]ethenyl]-, tetrafluoroborate(1-); Cyanine dye 5; NIR-absorbing heptamethine cyanine salt; Tetrafluoroborate salt of a benzo[cd]indole-based cyanine dye.
EINECS	Contact for details

Quality Control

Our production of this high-purity functional dye adheres to strict quality management protocols, ensuring batch-to-batch consistency for research and industrial applications. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and UV-Vis-NIR spectroscopy to confirm identity, purity, and key photophysical properties. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption, which can affect performance. For long-term storage, consider storing under an inert atmosphere such as argon or nitrogen.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to reference standard
Purity (HPLC, Area %)	≥ 98.0%
UV-Vis-NIR Absorption (λmax)	750 - 850 nm (Solvent dependent)
Moisture Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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