トピック
蛍光性ジアリールエテンナノ粒子を用いた非線形蛍光スイッチング
2018 年 49 巻 2 号 p. 86-89
詳細
2018 年 49 巻 2 号 p. 86-89
Fluorescent photochromic molecules that reversibly switch the fluorescence property upon photoirradiation are one of the most attractive targets for several applications, such as optical memory, switches and molecular probes for imaging technologies. Recently, we successfully prepared a highly fluorescent photoswitchable nanoparticle (NP), in which a photochromic diarylethene is combined with a highly fluorescent molecule. Such NPs exhibit the complete fluorescence quenching even at very low conversion (less than 5%) of the diarylethene unit. Furthermore, we tried to prepare several photoswitchable NPs, that have a different emission maximum in the fluorescence unit and a different absorption maximum in the closed-ring isomer of the diarylethene unit, and successfully demonstrated high-contrast and wavelength-selective multicolor fluorescence photoswitching in a mixture of these NPs upon irradiation with appropriate wavelength of light.
