Description

3-ethyl-2-[(3-ethyl-4,5-diphenylthiazol-2(3H)-ylidene)methyl]-5-[2-(3-ethyl-6,7,8,9-tetrahydronaphtho[2,1-d]thiazol-2(3H)-ylidene)-1-(2-thienyl)ethylidene]-4,5-dihydro-4-oxothiazolium iodide is a specialized polymethine dye belonging to the cyanine class, recognized for its strong light-absorbing and emitting properties. This compound is valued for its ability to function as a near-infrared (NIR) sensitizer and photostabilizer, making it critical for advanced optical applications. It is primarily needed by manufacturers and research institutions in the photographic, optical data storage, and semiconductor industries for developing high-performance functional materials.

Application

• NIR Sensitizer for Photographic Films & Plates: Used to extend the spectral sensitivity of silver halide emulsions into the near-infrared region for specialized imaging.
• Optical Data Storage Media: A key component in the dye layer of recordable CDs, DVDs, and Blu-ray discs for laser writing and reading.
• Semiconductor & Photovoltaic Research: Investigated as a light-harvesting material in dye-sensitized solar cells (DSSCs) and organic photovoltaics.
• Laser & Nonlinear Optical Materials: Employed in the development of solid-state dye lasers and materials for frequency conversion due to its large nonlinear optical susceptibility.
• Biomedical Imaging Probes: Serves as a precursor or core structure for synthesizing fluorescent labels and contrast agents for in vivo imaging.
• Photodynamic Therapy (PDT) Agents: Utilized in research for creating photosensitizers that generate reactive oxygen species upon light activation.
• Security Inks & Dyes: Incorporated into inks for banknotes, certificates, and security markings due to its specific optical properties.
• Analytical Chemistry Reagent: Functions as a spectral sensitizer in spectroscopic methods and chemical sensors.

Basic Information

Item	Details
Product Name	3-ethyl-2-[(3-ethyl-4,5-diphenylthiazol-2(3H)-ylidene)methyl]-5-[2-(3-ethyl-6,7,8,9-tetrahydronaphtho[2,1-d]thiazol-2(3H)-ylidene)-1-(2-thienyl)ethylidene]-4,5-dihydro-4-oxothiazolium iodide
CAS No.	84254-90-0
Molecular Formula	C48H42IN3O2S3
Molecular Weight	940.94 g/mol
Synonyms	NK-2014; Cyanine dye NK-2014; 3-Ethyl-2-[(3-ethyl-4,5-diphenyl-2(3H)-thiazolylidene)methyl]-5-[2-(3-ethyl-6,7,8,9-tetrahydro-2(3H)-naphtho[2,1-d]thiazolylidene)-1-(2-thienyl)ethylidene]-4,5-dihydro-4-oxothiazolium iodide; 3-Ethyl-2-[(3-ethyl-4,5-diphenyl-2-thiazolin-2-ylidene)methyl]-5-[2-(3-ethyl-6,7,8,9-tetrahydro-2H-naphtho[2,1-d]thiazol-2-ylidene)-1-(thiophen-2-yl)ethylidene]-4,5-dihydro-4-oxothiazol-3-ium iodide; Polymethine dye 84254-90-0; NIR cyanine dye; Heptamethine cyanine dye derivative
EINECS	Contact for details

Quality Control

Our production of this high-purity cyanine dye adheres to strict in-process controls to ensure batch-to-batch consistency and performance reliability. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing purity, spectral properties, and impurity profiles is provided with each shipment to support your R&D and manufacturing 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). The product is light-sensitive (store away from light). Keep the container tightly sealed in a dry environment to prevent moisture absorption and decomposition.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area Percent)
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
UV-Vis Absorption (λmax)	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.