Multifunctional Reversible Fluorescent Controller Based On A One-Dimensional Photonic Crystal.
作者：Yuxin Wu, Huaizhong Shen, Shunsheng Ye, Dong Yao, Wendong Liu, Junhu Zhang, Kai Zhang, and Bai Y
關鍵字：one-dimensional photonic crystal, ?uorescent controller, multifunctional, pH responsive, quantum dots
論文來源：期刊
具體來源：ACS Appl. Mater. Interfaces
發表時間：2016年
With the aim to build a multifunctional solid ?uorescent
controller, a one-dimensional photonic crystal and CdSe ?uorescent
single layer were separated on the opposite sides of quartz substrates.
The separation structure remarkably facilitates materials selection for the
?uorescent controller, which allows one to freely choose the ?uorescent
substance and constituents of 1DPC from a wide range of available
materials with the best desirable properties and without caring about the
interactions between them. Fluorescent enhancement and weakened
e?ect were successfully achieved when the excitation light was irradiated
from di?erent sides of the ?uorescent device. In addition, the ?uorescent
intensity can be altered reversibly along with environmental pH values
according to the change of a pH-responsive one-dimensional photonic crystal layer, which is quite di?erent from a previously
reported quenching mode. Meanwhile, the original position of the photonic stop band is essential for deciding what pH value
would produce the best e?ect of ?uorescent control. It provides a way to adjust the e?ect of ?uorescent controller according to
certain applied situations. The mechanism of ?uorescent variation was con?rmed by the assistance of a ?nite-di?erence time-
domain simulation. Furthermore, this device is also able to modulate ?uorescent wavelength and full width at half-maximum by
overlapping the photonic stop band and the emission of CdSe. Therefore, this method o?ers a universal strategy for the
fabrication of ?uorescent controllers.