Description

1,1',3,3,3',3'-Hexamethyl-4,5,4',5'-Dibenzoindo-Dicarbocyanine is a specialized near-infrared (NIR) absorbing cyanine dye with a high molecular extinction coefficient. This compound matters for its exceptional photophysical properties, making it a critical functional material in advanced optical and electronic applications. It is primarily needed by manufacturers and researchers in the fields of optical data storage, laser technology, photodynamic therapy, and as a sensitizer for photovoltaic cells.

Application

• Optical Data Storage Media: As a key light-absorbing component in recordable (CD-R, DVD-R) and high-density optical storage disks.
• Laser Dyes and Optical Filters: Used in the formulation of tunable dye lasers and the production of specific optical filters due to its sharp absorption in the NIR region.
• Photodynamic Therapy (PDT): Investigated as a potential photosensitizer for cancer treatment, where it generates reactive oxygen species upon light irradiation.
• Non-Linear Optical Materials: A building block for advanced materials used in optical limiting, switching, and frequency conversion devices.
• Dye-Sensitized Solar Cells (DSSCs): Functions as a sensitizer to extend the light absorption spectrum of solar cells into the near-infrared range, improving efficiency.
• Biomedical Imaging Probes: Utilized in the development of contrast agents for fluorescence imaging in the NIR window, where tissue penetration is deeper.
• Security Inks and Dyes: Employed in anti-counterfeiting applications for currency, documents, and high-value products due to its unique spectral signature.

Basic Information

Item	Details
Product Name	1,1',3,3,3',3'-Hexamethyl-4,5,4',5'-Dibenzoindo-Dicarbocyanine
CAS No.	56289-64-6
Molecular Formula	C45H45N3
Molecular Weight	627.87 g/mol
Synonyms	HITC Iodide; 1,1',3,3,3',3'-Hexamethylindodicarbocyanine Iodide; 4,5,4',5'-Dibenzo-1,1',3,3,3',3'-hexamethylindodicarbocyanine Iodide; HITC Perchlorate (salt variant); IR-140; NIR Dye 140; Cryptocyanine derivative; 2-[7-(1,3-Dihydro-1,1,3-trimethyl-2H-benz[e]indol-2-ylidene)-1,3,5-heptatrienyl]-1,1,3-trimethyl-1H-benz[e]indolium Iodide
EINECS	Contact for details

Quality Control

Our 1,1',3,3,3',3'-Hexamethyl-4,5,4',5'-Dibenzoindo-Dicarbocyanine is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity, consistent spectral properties, and batch-to-batch reproducibility. Certificates of Analysis (COA) detailing purity (HPLC), identity (IR, NMR), and absorbance characteristics are available upon request. We adhere to relevant ISO standards for chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled 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 degradation.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
λmax (Absorption)	740 - 760 nm (in methanol)
Extinction Coefficient (ε)	≥ 1.8 x 105 L·mol-1·cm-1
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 1.0 %

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