Synthesis and Luminescent Properties of Poly(alkylated indenopyrazine) and Its Copolymer Containing an Alkylated Spirofluorene Moiety

Abstract

We have synthesized new alkylated indenopyrazine homopolymer and its copolymer having an alkylated spirofluorene moiety. Poly(6,6,12,12-(Tetra-2-ethylhexyl)-6,12-Dihydrodiindeno[1,2-b:1,2-e]pyrazine-2,8-diyl) [PEHIP] and Poly(6,6,12,12-(tetra-2-ethylhexyl)-6,12-dihydrodiindeno[1,2-b:1,2-e]pyrazine-co-2′,3′,6′,7′-tertrakis-octyloxy-9-spirofluorene) [PEHIPSF] were polymerized by using Yamamoto reaction. PEHIP and PEHIPSF showed the PL maximum values of 470 nm and 454 nm in PL spectra. The PEHIPSF was fabricated into an EL device and it exhibited the EL maximum value of 463 nm.

Keywords:

• blue emitting material
• indenopyrazine
• OLED
• PLED
• spirofluorene
• Yamamoto polymerization

Acknowledgments

This reserarch was supported by a grant (Catholic Univ.) from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE), Republic of Korea. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (No. M2009A010800007). This study was supported by a grant (Hanyang Univ.) from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE), Republic of Korea. This study was supported by a grant from the Strategy Project funded by the Ministry of Knowledge Economy (MKE), Republic of Korea.