作者：Yuxin Wu, Huaizhong Shen, Shunsheng Ye, Dong Yao, Wendong Liu, Junhu Zhang, Kai Zhang, and Bai Y
关键字：one-dimensional photonic crystal, ?uorescent controller, multifunctional, pH responsive, quantum dots
论文来源：期刊
具体来源：ACS Appl. Mater. Interfaces
发表时间：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.