product

TopwellChem’s Infrared Fluorescent Pigment IR980 Blue engineered with nanoscale rare-earth doping technology (e.g., Yb³⁺/Tm³⁺ co-doped systems), this pigment utilizes upconversion luminescence to convert 980nm NIR light into intense blue visible light (450-480nm), achieving 1.5x higher fluorescence intensity than conventional solutions. The core-shell structure ensures environmental resistance, maintaining ＞99% fluorescence stability under extreme conditions (-40℃ to 260℃), UV exposure (UV-A/B/C), and chemical corrosion (pH 3-12).

Compatible with inks, coatings, plastics, and resins, it adheres to ASTM D3359 4B standards post-curing and complies with RoHS/REACH/FDA indirect food contact regulations. Customizable particle sizes (3-10μm) suit diverse applications from inkjet printing to injection molding. Lab tests confirm ＜2% intensity loss after 1000-hour continuous excitation, meeting military-grade durability requirements.

Featuring unclonable spectral fingerprints, it enables multi-layer authentication (visible-UV-NIR channels) with dedicated detectors, widely adopted in currency security, electronic component tracking, and biosensor labeling

• Financial Security: Covert fluorescent codes on banknotes/cards to combat sophisticated counterfeiting
• Electronics: Invisible traceability marks on PCBs, resistant to reflow soldering temperatures
• Biomedical: In vivo cell labeling and NIR imaging with minimized phototoxicity
• Luxury Packaging: Anti-counterfeiting tags verifiable via smartphone NIR cameras
• Aerospace: Extreme-temperature-resistant part IDs compatible with automated inspection systems

Infrared excitation ink/pigment: Infrared excitation ink is a printing ink giving off visible, bright and dazzling light (red, green and blue) when exposed to infrared light (940-1060nm). With the features of high technology content, difficulty in copying and high anti-forgery capability, it can be applied in anti-forgery printing widely, especially in RMB notes and gasoline vouchers.

Product characteristics
1. Photoluminescent pigment is a light-yellow powder, turns to yellow green, blue green, blue, and purple etc colors after being excited by light.
2. The smaller the particle size, the lower the luminance is.
3. Compared with other pigments, photoluminescent pigment can be easily and widely used in many fields.
4. High initial luminance, long afterglow time (Test according to DIN67510 Standard, its afterglow time can be 10, 000 minutes)
5. Its light-resistance, aging-resistance and chemical stability are all good (more than 10 years of life span)
6. It is a new type of environmentally friendly photoluminescent pigment with the characteristics of non-toxicity, non-radioactivity, non-flammability and non-explosibility.