Porphyrins with Four Monodisperse Oligofluorene Arms as Efficient Red Light-Emitting Materials

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• 作者：Binsong Li ; Jing Li ; Yaqin Fu ; and Zhishan Bo
• 刊名：Journal of the American Chemical Society
• 出版年：2004
• 出版时间：March 24, 2004
• 年：2004
• 卷：126
• 期：11
• 页码：3430 - 3431
• 全文大小：51K
• 年卷期：v.126,no.11(March 24, 2004)
• ISSN：1520-5126

文摘

A family of red light-emitting star-shaped porphyrins with four monodisperse conjugated oligofluorene arms was prepared by using two key reactions: Lindsey condensation and Suzuki-Miyaura cross coupling reactions. All porphyrins exhibit high quantum yields (about 0.22) and good solubility in common organic solvents, and form high-quality solid films. Optical studies showed that the star-shaped oligomers could absorb blue light and emit saturated red light via efficient energy transfer from the fluorene segments to the porphyrin core.