Enhancing Organic Phosphorescence by Manipulating Heavy-Atom Interaction
Enhancing Organic Phosphorescence by Manipulating Heavy-Atom Interaction
复制标题
通过操纵重原子相互作用增强有机磷光
DOI：
10.1021/acs.cgd.5b01400
复制
发表时间：
2016-02-01
影响因子：
3.8
通讯作者：
Zhao, Yanli
中科院分区：
文献类型：
--
作者：
Shi, Huifang;An, Zhongfu;Zhao, Yanli
在环境条件下实现无金属材料的高效磷光仍然是有机光电子学的主要挑战。在此，我们报告了一种简洁的方法，以获得高量子效率高达21.9%和毫秒级寿命的纯有机磷光通过操纵重原子相互作用的基础上，一类二溴苯衍生物在室温下的固态。通过对两对所设计的有机化合物的比较，烷基端多两个溴原子的化合物（PhBr_2C_6Br_2/PhBr_2C_8Br_2）的发光效率高于另一个（PhBr_2C_6/PhBr_2C_8）。通过单晶分析，提出磷光增强是由于有机晶体中分子间重原子相互作用增强所致。此外，通过使用这种有机磷光晶体的模型探针，演示了温度传感器。这项工作不仅提供了一个简洁的替代方案，以提高磷光…
Achieving highly efficient phosphorescence in metal-free materials under ambient conditions remains a major challenge in organic optoelectronics. Herein, we report a concise approach to obtaining pure organic phosphorescence with high quantum efficiency of up to 21.9% and millisecond-scale lifetime by manipulating heavy-atom interaction based on a class of dibromobenzene derivatives in the solid state under ambient conditions. By comparing two pairs of the organic compounds designed, the one with two more bromine atoms on the alky terminals (PhBr2C6Br2/PhBr2C8Br2) showed higher luminescence efficiency than the other one (PhBr2C6/PhBr2C8). From the single-crystal analysis, it was proposed that the enhancement of phosphorescence resulted from increased intermolecular heavy-atom interaction in the organic crystals. Furthermore, a temperature sensor was demonstrated by using a model probe of this kind of organic phosphorescent crystals. This work not only provides a concise alternative to enhance phosphoresce...