作者:Florian May、Michael Peter、Andreas Hütten、Luca Prodi、Jochen Mattay
DOI:10.1002/chem.201102961
日期:2012.1.16
Switchable fluorescent silica nanoparticles have been prepared by covalently incorporating a fluorophore and a photochromic compound inside the particle core. The fluorescence can be switched reversibly between an on‐ and off‐state via energy transfer. The particles were synthesized using different amounts of the photoswitchable compound (spiropyran) and the fluorophore (rhodamine B) in a size distribution
通过将荧光团和光致变色化合物共价结合到颗粒核内,已经制备了可转换的荧光二氧化硅纳米颗粒。荧光可以通过能量转移在开启和关闭状态之间可逆地切换。使用不同量的光可切换化合物(spiropyran)和荧光团(若丹明B)合成颗粒,其粒径分布在98至140 nm之间,并通过TEM和UV \ n表征了粒径,开关性能和荧光效率。可见光谱和荧光光谱。