Functional Dyes
Functional dyes are materials that absorb light across various wavelengths and perform functionalities such as sensitization, photothermal conversion, fluorescence, and circular dichroism.
Product Overview
Our functional dyes are broadly classified into three main product groups:
Selective Wavelength Absorbing Dyes, which absorb specific wavelengths and exhibit functions such as sensitization, photothermal conversion, and fluorescence.
Dichroic Dyes, which exhibit dichroism when driven in conjunction with liquid crystal molecules.
Pressure- and Heat-Sensitive Dyes, which develop color upon contact with acids when exposed to heat or pressure.
Selective Wavelength Absorbing Dyes are used in a wide range of applications, including optical filters, photosensitive products, and diagnostic reagents, by utilizing their functions such as selective wavelength absorption, sensitization, photothermal conversion, and fluorescence.
Dichroic Dyes are used in liquid crystal–based light control devices and polarization devices.
Pressure- and Heat-Sensitive Dyes are commonly used in applications such as receipts and labels.
Benefit
Leveraging a library of over 10,000 dyes accumulated through more than 70 years of research and development about dye synthesis, we provide high-quality dyes that perform functions tailored to the needs of each application. Additionally, we ensure a stable supply of high-quality products while accommodating the production of small-batch, high-variety products, starting from gram-scale manufacturing.
Features
Specific wavelength absorption dyes
We possess a wide range of dyes that sharply absorb specific wavelengths from the ultraviolet to near-infrared regions (350–1100nm), and we are also capable of adjusting the absorption wavelengths in the nanometer range.
Circular dichroic dyes
We possess dichroism dyes with a high dichroic ratio that correspond to each wavelength in the visible light range (380–700nm). Additionally, we have a lineup of dyes that form black colors by mixing dyes.
Pressure- and Heat-Sensitive Dyes
These dyes are normally colorless or slightly colored, but develop color when they come into contact with acids under the action of heat or pressure. They provide high color density along with excellent lightfastness and solvent resistance.
In recent years, new application technologies that take advantage of their inherent reversibility have attracted increasing attention. These include temperature-indicating materials capable of reversible colorless–colored transitions, rewritable thermal paper, and erasable toner.
Value proposition
Applications utilizing specific wavelength absorption functions
Near-infrared cut filters, blue light cut filters, color filters, etc.
Applications utilizing sensitization and photothermal conversion functions
Silver halide photography, X-ray photography, photosensitive printing plates, photoresists, etc.
Applications utilizing fluorescence functions
Cell staining reagents, diagnostic reagents, etc.
Applications utilizing dichroism
Dimming devices, polarizing devices, liquid crystal display elements, etc.
Applications Utilizing Pressure- and Heat-Sensitive Dyes
Fax paper, receipts, labels
Inquiries about our products and technology
For inquiries about products (SDS, TDS, usage instructions, pricing, purchase information, catalogs, regulations, samples, technology, business collaboration, etc.), please inquire here.
Inquiries