Phosphorescence from a pure organic fluorene derivative in solution at room temperature.
A fluorene derivative having both bromo and formyl groups exhibited bright phosphorescence emission in common organic solvents at room temperature. The absolute phosphorescence quantum yield reached 5.9% in chloroform at 298 K. When the fluorene derivative was incorporated into a poly(methyl methacrylate) film, the phosphorescence emission was similarly observed even under air at room temperature for over five days.
Organic Materials Group, Polymer Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan. TAKEUCHI.Masayuki@nims.go.jp.
Jinjia
J
Xu
Atsuro
A
Takai
Yuka
Y
Kobayashi
Masayuki
M
Takeuchi