BOIMPYs: Rapid Access to a Family of Red-Emissive Fluorophores and NIR Dyes
作者:Lukas J. Patalag、Peter G. Jones、Daniel B. Werz
DOI:10.1002/anie.201606883
日期:2016.10.10
bridging ligand at the meso position enables the binding of two BF2 units to provide sufficient rigidity and enhanced electron‐withdrawing strength. Absorption and emission events thus take place in the red (λ≈600 nm); the fluorescence quantum yields can reach unity (0.96) and show little dependence on solvent polarity. The synthetic route was shortened to two steps starting from commercially available
Self-host yellow iridium dendrimers based on carbazole dendrons: synthesis, characterization and application in solution-processed organic light-emitting diodes
作者:Bin Wang、Shiyang Shao、Junqiao Ding、Lixiang Wang、Xiabin Jing、Fosong Wang
DOI:10.1007/s11426-016-0247-9
日期:2016.12
a series of self-host yellow Ir dendrimers (Y-G0, Y-G1 and Y-G2) have been successfully synthesized and characterized in detail. It is found that the peripheral dendrons can effectively reduce the intermolecular interactions between emissive Ir cores, as verified by the increased photoluminescence quantum yields and film lifetimes. Among these dendrimers, Y-G2 bearing the second generation dendrons
根据不同的咔唑树枝状结构,成功合成了一系列自宿主的黄色Ir树枝状聚合物(Y-G0,Y-G1和Y-G2)。发现外围树枝状结构可以有效地减少发射Ir核之间的分子间相互作用,这通过增加的光致发光量子产率和膜寿命来证明。在这些树枝状聚合物中,带有第二代树枝状分子的Y-G2表现出最佳的非掺杂器件性能,峰值发光效率为20.2 cd / A。该值几乎是没有任何树突的Y-G0的两倍,可以通过分散Y-G2将其进一步提高到32.1 cd / A。进入宿主矩阵 我们相信这项工作将为开发具有自我宿主策略的高效黄色磷光树枝状聚合物提供启示。
Synthesis of star-shaped monodisperse oligo(9,9-di-n-octylfluorene-2,7-vinylene)s functionalized truxenes with two-photon absorption properties
of new star-shaped monodisperse conjugated truxene derivatives bearing oligo(fluorene-vinylene) arms (Tr-OFVn, n = 1, 2, 3, 4) have been synthesized. It is found that the conjugation of the oligomers can be extended with prolonging the arms. Notably, the branched oligomers Tr-OFVn without strong donor and acceptor units exhibit two-photonabsorptionproperties, and the two-photonabsorption cross sections
Four new well-defined monodisperse linear oligofluorenes with anthracene core An-OFVn (n = 1–4) have been synthesized through Heck and Wittig reaction. These conjugated oligomers exhibit good solubility in common organic solvents. It is found that the conjugation length of the oligomers can be extended and the formation of excimers can be suppressed with increasing the number of fluorene–vinylene units
Porphyrins with Four Monodisperse Oligofluorene Arms as Efficient Red Light-Emitting Materials
作者:Binsong Li、Jing Li、Yaqin Fu、Zhishan Bo
DOI:10.1021/ja039832y
日期:2004.3.1
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