Description

3-Ethyl-2-[2-[(3-Ethyl-5-Methoxy-3H-Benzoselenazol-2-Ylidene)Methyl]But-1-Enyl]-5,6-Dimethylbenzoselenazolium Iodide is a high-purity, specialized benzoselenazolium dye salt with a complex polymethine structure. This compound matters for its unique photophysical properties, making it a critical functional material in advanced research and development. It is primarily needed by manufacturers and R&D laboratories in the fields of nonlinear optics, photovoltaics, and as a sensitizing dye for photographic and imaging applications.

Application

• Photosensitizer and Dye Material: Used in the development of dye-sensitized solar cells (DSSCs) and other photoelectrochemical devices.
• Nonlinear Optical (NLO) Material: Serves as a key chromophore for research into second- and third-order nonlinear optical effects for telecommunications and data processing.
• Photographic Sensitization: Functions as a spectral sensitizer in silver halide photographic emulsions to extend light sensitivity into specific wavelength ranges.
• Optical Data Storage: Investigated for use in advanced optical recording media due to its light-absorption characteristics.
• Biomedical Imaging Probes: Explored in research for potential application as a contrast agent or fluorescent marker in bioimaging.
• Organic Semiconductor Research: Utilized as a building block or dopant in the study of organic light-emitting diodes (OLEDs) and thin-film transistors.

Basic Information

Product Name	3-Ethyl-2-[2-[(3-Ethyl-5-Methoxy-3H-Benzoselenazol-2-Ylidene)Methyl]But-1-Enyl]-5,6-Dimethylbenzoselenazolium Iodide
CAS No.	93857-89-7
Molecular Formula	C27H31IN2OSe2
Molecular Weight	717.37 g/mol
Synonyms	Benzoselenazolium, 3-ethyl-2-[2-[(3-ethyl-5-methoxy-3H-benzoselenazol-2-ylidene)methyl]-1-butenyl]-5,6-dimethyl-, iodide; 5,6-Dimethyl-3-ethyl-2-[2-[(3-ethyl-5-methoxy-2(3H)-benzoselenazolylidene)methyl]-1-butenyl]benzoselenazolium iodide; Se-5; Dye Se-5; NK-557; 3-Ethyl-5-methoxy-2-[(1,3,3-trimethyl-2-indolinylidene)methyl]benzoselenazolium iodide (related structure); Polymethine dye Se-5; Benzothiazolium analogue with selenium.
EINECS	Contact for details

Quality Control

Our production of this specialty chemical adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and elemental analysis. A detailed Certificate of Analysis (COA) is provided with each shipment, ensuring traceability and compliance with your research or manufacturing specifications.

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 inert atmosphere packaging.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.