Substitution effect of super hydrophobic units: A new strategy to design deep blue fluorescent emitters

作者：Li, Ke; Liu, Ming; Yang, Shuai; Chen, Yantong; He, Yaowu; Murtaza, Imran; Goto, Osamu; Shen, Clifton; Meng, Hong^*; He, Gufeng^*

来源：Dyes and Pigments, 2017, 139: 747-755.

DOI：10.1016/j.dyepig.2016.12.034

• Deep blue
• Intermolecular packing
• Material chemistry
• OLED
• Photoluminescence
• Super hydrophobic

Fluorescent deep-blue emitters consisting of arylamine chrysene have attracted immense commercial interest in organic light-emitting devices (OLEDs). Herein, we endeavor to design emitters with super hydrophobic groups, namely trifluoromethoxy (-OCF3) or trifluoromethylsufanyl (-SCF3) substituted on 6,12-diarylamine chrysene. Surprisingly, the new materials show highly efficient and substantial blue shift in fluorescence spectra with more pure color quality, higher thermostability and better moisture resistant properties. Astonishing electroluminescence performance is envisioned by promoting the molecular design based on experience and theoretical calculations along with the single crystal X-Ray analysis. The CIE coordinate values for 6, 12-diamine-N,N,N',N'-tetra(p-trifluordmethoxyphenyl)chrysene (DATPC-OCF3) and 6,12-diamine-N,N,MN'-tetra(p-trifluoromethylsulfanylphenyl)chrysene (DATPC-SCF3) are (0.14, 0.09) and (0.15, 0.06), respectively, which exactly match with the National Television System Committee (NTSC) and High-Definition Television requirements for unprecedented deep-blue emission.

• 出版日期2017-4
• 单位上海交通大学; 北京大学深圳研究生院