| abstract |
The invention belongs to the field of organic optoelectronics, and discloses a polymer containing S,S-dioxo-thioxanthene derivative units, a preparation method and an application thereof. In the present invention, the S,S-dioxo-thioxanthene derivative unit is introduced into the main chain of the polymer through copolymerization, and the S,S-dioxo-thioxanthene derivative unit can improve the electron transport performance of the polymer while maintaining a high fluorescence quantum yield. By adjusting the proportion of copolymerized units, the luminescence spectrum of the polymer can be adjusted, and polymers with different color light emission can be obtained. Polymers containing S, S-dioxo-thioxanthene derivative units have higher fluorescence quantum yield, better thermal stability, higher and balanced carrier transport performance, easy adjustment of luminescence spectrum, higher electroluminescent properties. Such S,S-dioxo-thioxanthene derivative units can be used as light-emitting materials to prepare polymer light-emitting diodes by solution processing. |