Research Institute for Biomimetics and Soft Matter, College of Materials, College of Physical Science and Technology, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Xiamen University, Xiamen, 361005, China.
Advanced Soft Matter Group, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ Delft, The Netherlands.
Small. 2019 Mar;15(13):e1804171. doi: 10.1002/smll.201804171. Epub 2019 Feb 20.
This work examines the self-collimation effect of silk materials on fluorescence emission/detection. A macroscopic regulation strategy, coupled with meso-reconstruction and meso-functionalization, is adopted to amplify the fluorescence emission of organic fluorescent dyes (i.e., Rhodamine 6G (R6G)) using silk photonic crystal (PC) films. The fluorescence emission can be linearly enhanced or inhibited by a PC as a result of the photonic bandgap coupling with the excitation light and/or emission light. Depending on the design of the silk fluorescence collimator, the emission can reach 49.37 times higher than the control. The silk fluorescence collimator can be applied to achieve significant benefits: for instance, as a humidity sensor, it provides good reproducibility and a sensitivity of 28.50 a.u./% relative humidity, which is 80.78 times higher than the sensitivity of the control, and as a novel curtain, it raises the energy conversion efficiency of the semitransparent dye-sensitized solar cells (DSSCs) by 16%.
这项工作研究了丝材料对荧光发射/检测的自准直效应。采用宏观调控策略，结合介观重构和介观功能化，使用丝光子晶体（PC）薄膜放大有机荧光染料（如罗丹明 6G（R6G））的荧光发射。荧光发射可以通过 PC 线性增强或抑制，这是由于光子带隙与激发光和/或发射光的耦合。根据丝荧光准直器的设计，发射可以达到对照的 49.37 倍以上。丝荧光准直器可用于实现显著的效益：例如，作为湿度传感器，它提供了良好的重现性和 28.50 a.u./%相对湿度的灵敏度，比对照的灵敏度高 80.78 倍，作为一种新型窗帘，它将半透明染料敏化太阳能电池（DSSC）的能量转换效率提高了 16%。
