期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 17, 页码 14956-14965出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b13444
关键词
BODIPY; intramolecular charge transfer; solid emission; twisting vibration; electroluminescence
资金
- National Natural Science Foundation of China [51573055, 21334002, 21733005, 51761135101, 51473052, 51521002]
- Ministry of Science and Technology of China [2015CB655003]
- Fundamental Research Funds for the Central Universities
- Major Science and Technology Project of Guangdong Province [2015B090913002]
- Key Program of Guangzhou Scientific Research Special Project [201707020024]
A new way to approaching highly emissive BODIPY dyes in both solution and solid state is achieved by introducing intramolecular charge transfer (ICT). A hybrid excited state that shows behaviors of both the ICT excited state and local excited state is discovered to be beneficial in avoiding the disturbance from the rotation vibration of the flexible phenyl substituents. Thus, the nonradiative transition process is suppressed, and the fluorescence efficiency goes up. By modification of the excited state, we realize emission enhancement of crystalline BODIPY derivatives with a PLQY from 0.08 to 0.27, and the compound expresses a good potential application prospect in organic semiconductors.
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