Looking from different perspectives! Proper electronic structure of near-infrared absorbing functional dyes discovered: A big step toward the development of dyes with long-wavelength near-infrared absorption

Looking from different perspectives! Proper electronic structure of near-infrared absorbing functional dyes discovered: A big step toward the development of dyes with long-wavelength near-infrared absorption

A research group has discovered that near-infrared absorbing dyes, which had previously been considered to have closed-shell electronic structures, have an intermediate electronic structure, between closed- and open-shell structures. They also found that as the wavelength of near-infrared light that can be absorbed becomes longer the contribution of open-shell forms increases within the dye. These newly discovered characteristics are expected to…

Proper electronic structure of near-infrared absorbing functional dyes discovered

Near-infrared light, whose wavelength is longer than visible light, is invisible and can pass through many substances. Organic materials that efficiently absorb near-infrared light are essential for technological innovations that utilize near-infrared light, such as the dyes in the infrared blocking filters of smartphone cameras and security inks. These and many more technical applications make developing new dyes that can absorb longer waveleng…