Description

3-Ethyl-2-[2-[(3-Ethylnaphtho[2,3-D]Thiazolin-2-Ylidene)Methyl]-1-Butenyl]Naphtho[2,3-D]Thiazolium p-Toluenesulphonate is a specialized organic salt belonging to the cyanine dye family, valued for its unique photophysical properties. This compound is a critical functional material, primarily serving as a near-infrared (NIR) absorbing dye and photosensitizer. It is essential for manufacturers and researchers in advanced technology sectors requiring precise light absorption and energy transfer capabilities.

Application

• Optical Data Storage: As a key component in recordable CD-R and DVD-R media for its strong absorption in the NIR region.
• Photodynamic Therapy (PDT): Investigated as a potential photosensitizer for cancer treatment due to its ability to generate reactive oxygen species upon light activation.
• Non-Linear Optics (NLO): Used in the development of materials for optical limiting, switching, and frequency conversion applications.
• Laser Dyes & Sensors: Employed in tunable dye lasers and as a sensing element in chemical or biological detection systems.
• Organic Photovoltaics (OPV): As an electron donor or acceptor material in the active layer of solar cells to enhance light harvesting.
• Industrial Imaging & Printing: Utilized in infrared-sensitive films and specialty inks for security or technical printing.

Basic Information

Product Name	3-Ethyl-2-[2-[(3-Ethylnaphtho[2,3-D]Thiazolin-2-Ylidene)Methyl]-1-Butenyl]Naphtho[2,3-D]Thiazolium p-Toluenesulphonate
CAS No.	18420-56-9
Molecular Formula	C37H34N2O3S3
Molecular Weight	650.87 g/mol
Synonyms	NK-2014; NK 2014; 3-Ethyl-2-[2-[(3-ethylnaphtho[2,3-d]thiazolin-2-ylidene)methyl]-1-buten-1-yl]naphtho[2,3-d]thiazolium 4-methylbenzenesulfonate; 3-Ethyl-2-[2-[(3-ethyl-2(3H)-naphtho[2,3-d]thiazolylidene)methyl]-1-butenyl]naphtho[2,3-d]thiazolium p-toluenesulfonate; Cyanine dye NK-2014; Naphthothiazolium cyanine dye; IR-absorbing cyanine dye; Benzenesulfonic acid, 4-methyl-, 3-ethyl-2-[2-[(3-ethyl-2(3H)-naphtho[2,3-d]thiazolylidene)methyl]-1-butenyl]naphtho[2,3-d]thiazolium
EINECS	Contact for details

Quality Control

Our production of this high-purity functional dye adheres to strict batch-to-batch consistency protocols. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and UV-Vis-NIR spectroscopy to confirm identity, purity, and critical optical properties. Certificates of Analysis (COA) detailing assay, impurity profile, and absorbance characteristics are provided with each shipment to ensure it meets your specific research or 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 and should be handled under appropriate conditions to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	Conforms
Assay (HPLC)	≥ 98.0%
λmax (Absorption Maximum)	780 - 810 nm (in specific solvent)
Loss on Drying	≤ 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.