题目：

Controllable Synthesis of Organic Microcrystals with

Tunable Emission Color and Morphology Based on

Molecular Packing Mode

作者：

Zhi-Zhou Li¹, Liang-Sheng Liao^1,2,* and Xue-Dong Wang^1,3*

单位：

¹Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano and Soft Materials (FUNSOM) Soochow University Suzhou, Jiangsu 215123, P. R.

²Jiangsu Industrial Technology Research Institute (JITRI)Wujiang, Suzhou, Jiangsu 215211, P. R. China

³National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093, China

摘要：

Organic microcrystals are of essential importance for high fluorescence efficiency, ordered molecular packing mode, minimized defects, and smooth shapes, which are extensively applied in organic optoelectronics. The molecular packing mode significantly influences the optical/electrical properties of organic microcrystals, which makes the controllable preparation of organic microcrystals with desired molecular packing mode extremely important. In the study, yellow-emissive α phase organic microcrystals with rectangular morphology and green-emissive β phase perylene microcrystals with rhombic morphology are separately prepared by simply controlling the solution concentration. The distinct molecular staking modes of the H/J-aggregate are found in these two types of perylene microcrystals, which contribute to the different emission color, morphology, and radiative decay rate. What is more interesting, the α-doped β phase and the β-doped α phase organic microcrystals can also be fabricated by modulating the evaporation rate from 100 to 10 µL min⁻¹. The findings can contribute to the future development of organic optoelectronics at the microscale.

影响因子：

8.643

分区情况：

一区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/smll.201702952/abstract;