Description

Ethyl 3-Ethyl-2-[5-(3-Ethyl-3H-Benzoselenazol-2-Ylidene)Penta-1,3-Dienyl]Benzoselenazolium Sulphate is a specialized organic salt belonging to the cyanine dye family, distinguished by its incorporation of selenium. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical functional material in advanced technological applications. It is primarily sought by manufacturers and researchers in the photonics, imaging, and materials science sectors for its role as a sensitizer and active component.

Application

• Optical Sensitizer for Photographic Emulsions: Used to extend the spectral sensitivity of silver halide films into the near-infrared region.
• Active Medium in Dye Lasers: Serves as a gain medium in tunable liquid lasers operating in specific wavelength ranges.
• Non-Linear Optical (NLO) Materials: A key component in the development of materials for frequency doubling, optical switching, and data storage due to its high polarizability.
• Biomedical Imaging Probes: Utilized in the synthesis of NIR-fluorescent labels and contrast agents for deep-tissue imaging and diagnostic assays.
• Organic Photovoltaic (OPV) Cells: Functions as a light-absorbing material or electron donor in the active layer of solar cells.
• Chemical Sensors: Employed in the fabrication of optochemical sensors for detecting specific ions or gases based on spectral shifts.

Basic Information

Item	Details
Product Name	Ethyl 3-Ethyl-2-[5-(3-Ethyl-3H-Benzoselenazol-2-Ylidene)Penta-1,3-Dienyl]Benzoselenazolium Sulphate
CAS No.	988-93-2
Molecular Formula	C27H31N2O4SSe2+ • SO42-
Molecular Weight	Contact for details
Synonyms	1,3-Diethyl-2-[5-(1,3-diethyl-1,3-dihydro-2H-benzoselenazol-2-ylidene)penta-1,3-dienyl]-1H-benzoselenazolium sulfate; 1,1'-Diethyl-2,2'-selenadicarbocyanine sulfate; Dye 988-93-2; NIR Cyanine Dye Sulfate Salt; Selenadicarbocyanine Dye; Benz[e]indolium, 2-[5-(1,3-diethyl-1,3-dihydro-2H-benzoselenazol-2-ylidene)-1,3-pentadienyl]-1,3-diethyl-, sulfate (1:1)
EINECS	Contact for details

Quality Control

Our production of Ethyl 3-Ethyl-2-[5-(3-Ethyl-3H-Benzoselenazol-2-Ylidene)Penta-1,3-Dienyl]Benzoselenazolium Sulphate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and UV-Vis-NIR spectroscopy to confirm identity, purity, and spectral properties. Certificates of Analysis (COA) detailing all critical specifications are 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). The product is light-sensitive and should be handled under subdued lighting conditions to prevent degradation. Keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	Conforms to reference spectrum
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 1.0%
Absorption Max (λmax)	Contact for details

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