Description

(2Z)-3-Ethyl-2-[(2E,4E,6E)-7-(3-Ethylbenzothiazol-2-Yl)Hepta-2,4,6-Trienylidene]Benzothiazole Iodide is a specialized cyanine dye salt, a high-value organic compound prized for its strong light absorption and fluorescence properties in the near-infrared (NIR) region. This compound matters for its critical role as a functional material in advanced photonic and electronic applications, where precise optical characteristics are non-negotiable. It is primarily needed by manufacturers and research institutions in the fields of optical data storage, laser technology, and as a sensitizer for dye-sensitized solar cells (DSSCs).

Application

• Optical Data Storage Media: As a key NIR-absorbing dye layer for recordable (R) and rewritable (RW) optical discs (e.g., CD-R, DVD±R).
• Laser Technology & Optical Filters: Used in the formulation of laser dyes and for creating selective optical filters due to its sharp absorption bands.
• Dye-Sensitized Solar Cells (DSSCs): Functions as a photosensitizer to absorb sunlight and initiate electron transfer in next-generation photovoltaic devices.
• Non-Linear Optical (NLO) Materials: A candidate component for devices requiring frequency doubling and other NLO effects.
• Biomedical Imaging Probes: Potential use in developing NIR fluorescent tags and contrast agents for in-vivo imaging, given its spectral properties.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer agent for targeted cancer treatments.
• Chemical Sensors: Employed in the development of optochemical sensors for detecting specific ions or molecules.
• Academic & Industrial R&D: Serves as a reference standard and building block for synthesizing novel functional dyes and conjugated materials.

Basic Information

Product Name	(2Z)-3-Ethyl-2-[(2E,4E,6E)-7-(3-Ethylbenzothiazol-2-Yl)Hepta-2,4,6-Trienylidene]Benzothiazole Iodide
CAS No.	89013-15-0
Molecular Formula	C25H25IN2S2
Molecular Weight	544.51 g/mol
Synonyms	NK-2016; 3-Ethyl-2-[7-(3-ethyl-2(3H)-benzothiazolylidene)-1,3,5-heptatrienyl]benzothiazolium iodide; 2-[7-(3-Ethyl-2-benzothiazolinylidene)-1,3,5-heptatrienyl]-3-ethylbenzothiazolium iodide; NK 2016; Heptamethine cyanine dye iodide salt; Benzothiazolium, 3-ethyl-2-[(1E,3E,5E,7Z)-7-[3-ethyl-2(3H)-benzothiazolylidene]-1,3,5-heptatrien-1-yl]-, iodide; Cyanine dye NK-2016; 89013-15-0
EINECS	Contact for details

Quality Control

Our production of this high-purity cyanine dye adheres to stringent quality protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity, UV-Vis/NIR spectroscopy for optical performance validation, and NMR for structural confirmation. We provide detailed Certificates of Analysis (COA) with each shipment, ensuring traceability and compliance with your research or manufacturing specifications. For custom grades or specific impurity profiles, our technical team is available for consultation.

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) and should be handled under inert atmosphere when appropriate to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0% (Area %)
UV-Vis Absorption (λmax)	Specified per customer grade (typically ~780-820 nm in solution)
Moisture Content (KF)	≤ 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.