What Are Fluorescent Pigments and Dyes?
Pigments and dyes are chemical substances used to color another material (often referred to as colorants). Fluorescent Pigment Manufacturer and dyes are special colorants that absorb light energy at one wavelength, such as invisible ultraviolet light (UV), and then emit light at a longer wavelength, producing a specific color.
Another way of describing the fluorescence process is that higher energy light (shorter wavelength = higher energy) excites fluorescent material to emit lower energy visible light (longer wavelength = lower energy). Fluorescent materials can emit different colors throughout the visible color spectrum depending upon their physical and chemical properties.
The Two Main Types of Fluorescent Colorants
Visible Fluorescent Pigments and Dyes
Visible fluorescent pigments and dyes are visible colorants that become brighter when excited by light. These colors are usually referred to as daylight-fluorescent colors and enhance the visible color reflected by the material to produce an intense glow.
The primary characteristic of daylight-fluorescent materials is their extremely high visibility and ability to attract attention. This attribute makes them ideal for:
- Advertising
- Road safety
- Protective clothing
- Theater/performing arts
- Consumer products (toys, paints, highlighter pens, tags, and labels)
Invisible Fluorescent Pigments and Dyes
Invisible fluorescent pigment and dyes are colorants that possess little or no visible color under standard white light. The material will only emit a visible color while excited by light of a shorter wavelength, such as invisible ultraviolet light (UV). The color is only visible for as long as the excitation is maintained. Once removed from the excitation light, the material stops producing the visible color.
In addition, some materials will emit different colors depending on the specific wavelength of UV light. This characteristic makes invisible fluorescent pigments and Dyes for seed Coatings ideal for applications requiring hidden or covert features.
Source Url: https://angtech.com/ultimate-guide-to-fluorescent-pigments-and-dyes/
Comments
Post a Comment