Xu Zhen, Liu Qian T, Wang Xiaozhu, Liu Qian, Hean Duane, Chou Keng C, Wolf Michael O
Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver BC V6T 1Z1 Canada
Chem Sci. 2020 Feb 10;11(10):2729-2734. doi: 10.1039/c9sc05697a.
Simple structural modifications using oxidation and methylation of a quinoline-containing diarylethene result in dramatic variation of photophysical properties. Turn-on fluorescence, room temperature phosphorescence (RTP) and red-green-blue (RGB) switching were achieved in three different related compounds. Photoswitchable diarylethenes (DAEs) that exhibit turn-on fluorescence are in high demand for super-resolution microscopy, and the development of purely organic phosphorescent materials in the amorphous state is attractive but challenging. The findings reported here provide a novel toolkit for designing turn-on fluorescence DAEs for super-resolution microscopy and extending the scope of amorphous RTP materials. More importantly, we bridge between these two fundamentally significant photochemical and photophysical phenomena, and reveal structure-property relationships between DAE photochromism and RTP.
通过对含喹啉的二芳基乙烯进行氧化和甲基化等简单的结构修饰，可导致光物理性质发生显著变化。在三种不同的相关化合物中实现了荧光开启、室温磷光（RTP）以及红-绿-蓝（RGB）切换。具有荧光开启特性的光开关二芳基乙烯（DAE）在超分辨率显微镜中需求很高，而开发非晶态的纯有机磷光材料很有吸引力但具有挑战性。此处报道的研究结果为设计用于超分辨率显微镜的荧光开启型DAE以及扩展非晶态RTP材料的范围提供了一个新颖的工具包。更重要的是，我们在这两种具有根本重要性的光化学和光物理现象之间架起了桥梁，并揭示了DAE光致变色与RTP之间的结构-性质关系。
