Description

3-Ethyl-2-([7-([3-Ethyl-6-Methyl-1,3-Benzothiazol-2(3H)-Ylidene]Methyl)-4,4A,5,6-Tetrahydro-2(3H)-Naphthalenylidene]Methyl)-6-Methyl-1,3-Benzothiazol-3-Ium Iodide is a high-purity, synthetic cyanine dye salt, a member of the benzothiazolium class, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is a critical functional material for advanced optical and electronic applications, where precise photophysical characteristics are paramount. It is primarily sought by manufacturers and research institutions in the photovoltaic, optical data storage, and biomedical imaging sectors for use as a sensitizer or a fluorescent probe.

Application

• NIR-Sensitizer for Dye-Sensitized Solar Cells (DSSCs): Used to extend the light absorption spectrum into the near-infrared region, enhancing solar energy conversion efficiency.
• Optical Recording Media: A key component in the formulation of dyes for recordable CDs, DVDs, and Blu-ray discs due to its specific light-absorption profile.
• Fluorescent Labeling and Bioimaging: Serves as a contrast agent or probe in biological research for deep-tissue imaging, leveraging its NIR fluorescence.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for targeted cancer treatments.
• Non-Linear Optical Materials: Used in the development of materials for optical limiting, switching, and frequency conversion applications.
• Chemical Sensors: Employed in the fabrication of sensor systems that detect specific analytes through changes in optical properties.

Basic Information

Product Name	3-Ethyl-2-([7-([3-Ethyl-6-Methyl-1,3-Benzothiazol-2(3H)-Ylidene]Methyl)-4,4A,5,6-Tetrahydro-2(3H)-Naphthalenylidene]Methyl)-6-Methyl-1,3-Benzothiazol-3-Ium Iodide
CAS No.	20749-81-9
Molecular Formula	C₃₄H₃₇IN₂S₂
Molecular Weight	688.70 g/mol
Synonyms	NK-2016; 3-Ethyl-2-((7-((3-ethyl-6-methylbenzothiazol-2(3H)-ylidene)methyl)-1,2,3,5,6,7-hexahydropyrido(3,2,1-ij)quinolin-9-yl)methylene)-6-methylbenzothiazol-3-ium iodide; Cyanine dye NK-2016; 1,2,3,5,6,7-Hexahydro-9-[(1,3-dihydro-3-ethyl-6-methyl-2H-benzothiazol-2-ylidene)methyl]pyrido[3,2,1-ij]quinolinium, 3-ethyl-6-methyl-2-[(3-ethyl-6-methyl-2(3H)-benzothiazolylidene)methyl]-, iodide; NK2016; Heptamethine cyanine dye salt
EINECS	Contact for details

Quality Control

Every batch of this cyanine dye is produced and analyzed under strict quality management protocols to ensure exceptional batch-to-batch consistency in its critical optical properties. Our quality assurance includes comprehensive testing for identity, purity, and impurity profiles using advanced analytical techniques. A Certificate of Analysis (COA) detailing specific results for each lot, including HPLC purity, absorbance/fluorescence maxima, and moisture content, is provided to guarantee it meets your precise technical requirements.

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 (moisture-sensitive) nature, the container must be kept tightly sealed in a desiccated environment to prevent degradation. For long-term storage, consider using an inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Absorption λmax (in solvent)	Contact for details
Fluorescence λmax (in solvent)	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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