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Construction of a Luminogen Exhibiting High Contrast and Multicolored Emission Switching through Combination of a Bulky Conjugation Core and Tolyl Groups
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-18 , DOI: 10.1002/asia.201801608 Yuxin Duan 1 , Huili Ma 2 , Haiyan Tian 1 , Jing Liu 1 , Xuebin Deng 1 , Qian Peng 2 , Yong Qiang Dong 1
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2018-12-18 , DOI: 10.1002/asia.201801608 Yuxin Duan 1 , Huili Ma 2 , Haiyan Tian 1 , Jing Liu 1 , Xuebin Deng 1 , Qian Peng 2 , Yong Qiang Dong 1
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Stimuli‐responsive luminogens may find application in highly sensitive sensors, memories and security inks. However, few examples exhibiting both high contrast and multi‐colored emission switching have been reported due to the absence of a molecular design strategy. Through combination of large conjugation core and peripheral phenyl rings, we obtained ditolyldibenzofulvene (1). Luminogen 1 is AIE active and exhibits tetracolored emission depending on its morphology. Its three single crystals emit blue, yellow and dark orange light upon excitation, exhibiting a maximal emission of 461 nm, 545 nm and 586 nm, respectively, and its amorphous solid emits at 557 nm. All the four aggregates exhibit enhanced emission intensity at lower temperature, but only the orange‐emissive crystals exhibit blue‐shifted emission. The emission of 1 can be switched reversibly between any two of the four states through morphology tuning. Finally, the potential application of 1 in optical data storage was also investigated.
中文翻译：
结合大体积共轭核和甲苯基基团的高对比度和多色发射转换的发光剂的构建
刺激性发光剂可能会在高度敏感的传感器，内存和防伪油墨中找到应用。然而，由于缺乏分子设计策略，很少有展示高对比度和多色发射切换的例子。通过大的共轭核心和外围苯环的结合，我们获得了二甲苯基二苯并富勒烯（1）。发光素1具有AIE活性，并根据其形态表现出四色发光。它的三个单晶在激发时发出蓝色，黄色和深橙色的光，分别显示最大发射461 nm，545 nm和586 nm，而其非晶态固体则发射557 nm。所有四种聚集体在较低温度下均表现出增强的发射强度，但是只有橙色发射晶体具有蓝移发射。通过形态调整，可以在四个状态的任何两个之间可逆地切换1的发射。最后，还研究了1在光学数据存储中的潜在应用。
更新日期：2018-12-18
中文翻译：
结合大体积共轭核和甲苯基基团的高对比度和多色发射转换的发光剂的构建
刺激性发光剂可能会在高度敏感的传感器，内存和防伪油墨中找到应用。然而，由于缺乏分子设计策略，很少有展示高对比度和多色发射切换的例子。通过大的共轭核心和外围苯环的结合，我们获得了二甲苯基二苯并富勒烯（1）。发光素1具有AIE活性，并根据其形态表现出四色发光。它的三个单晶在激发时发出蓝色，黄色和深橙色的光，分别显示最大发射461 nm，545 nm和586 nm，而其非晶态固体则发射557 nm。所有四种聚集体在较低温度下均表现出增强的发射强度，但是只有橙色发射晶体具有蓝移发射。通过形态调整，可以在四个状态的任何两个之间可逆地切换1的发射。最后，还研究了1在光学数据存储中的潜在应用。
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