Solution-Processable Core-Extended Quinacridone Derivatives with Intact Hydrogen Bonds
摘要:
A highly efficient and feasible condensation followed by annulation synthetic approach was developed to afford a subset of 9-ring-fused quinacridone derivatives on a 10 g scale. Despite the amenable intermolecular hydrogen-bonding ability of these rigid molecules, good solubility in common organic solvents and solution processability into uniformed thin films were achieved. Integrated advantages in the synthesis and properties make these compounds ideal building blocks for high-performance dyes and optoelectronic materials.
Turning-on the Quenched Fluorescence of Azomethines through Structural Modifications
作者:Satyananda Barik、William G. Skene
DOI:10.1002/ejoc.201201502
日期:2013.5
fluorene azomethines were prepared to examine the effect of structuralmodification on the absolute fluorescence quantum yields (Φfl). The change in fluorescence occurring upon reversing the orientation of the azomethine bond, the number of fluorene units, and alkylation at the 9,9′-positions of fluorene was examined. It was found that Φfl could be tailored with these structuralmodifications with 0
制备了一系列芴偶氮甲碱以检查结构修饰对绝对荧光量子产率 (Φfl) 的影响。检查了在反转偶氮甲碱键的方向、芴单元的数量和芴的 9,9'-位置的烷基化时发生的荧光变化。发现 Φfl 可以通过这些结构修改进行调整,0.05 ≤ Φfl ≤ 0.45。对于衍生自 2,7-二氨基芴的三聚体测量最高 Φfl,每个芴在 9,9'-位被烷基化。荧光量子产率在 77 K 时没有增加,这意味着不存在涉及内部转换的荧光猝灭模式。在用三氟乙酸质子化亚胺时也没有观察到荧光增强。这证实 Waldon 反转和异构化不是荧光失活模式。此外,当芴衍生物在 354 nm 下照射时,在室温或 77 K 下均未观察到光异构化。相比之下,N-亚苄基苯胺类似物的 Z 光异构体通过吸光度和 1 H NMR 光谱进行光谱检测。
Fluorene-based mononuclear gold(<scp>i</scp>) complexes: the effect of alkyl chain, aggregation-induced emission (AIE) and mechanochromism characteristics
作者:Zhao Chen、Yuting Nie、Sheng Hua Liu
DOI:10.1039/c6ra17806e
日期:——
In this paper, three fluorene-based gold(Ι) complexes have been synthesized and characterized. All of these mononuclear gold(I) complexes exhibit obvious aggregation-induced emission (AIE) behavior. Furthermore, the luminogen 3 without containing...
NOVEL ARYLAMINE POLYMER, METHOD FOR PRODUCING THE SAME, INK COMPOSITION, FILM, ELECTRONIC DEVICE, ORGANIC THIN-FILM TRANSISTOR, AND DISPLAY DEVICE
申请人:Sagisaka Toshiya
公开号:US20100219405A1
公开(公告)日:2010-09-02
A polymer containing a repeating unit expressed by General Formula (I): General Formula (I) where Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group; Ar2 and Ar3 each independently represent a divalent group of a substituted or unsubstituted aromatic hydrocarbon group; and R1 and R2 each independently represent a hydrogen atom, substituted or unsubstituted alkyl group, or substituted or unsubstituted aromatic hydrocarbon group.
CONJUGATED POLYMER, INSOLUBILIZED POLYMER, ORGANIC ELECTROLUMINESCENT DEVICE MATERIAL, COMPOSITION FOR ORGANIC ELECTROLUMINESCENT DEVICE, METHOD FOR PRODUCING POLYMER, ORGANIC ELECTROLUMINESCENT DEVICE, ORGANIC EL DISPLAY, AND ORGANIC EL ILLUMINATOR
申请人:Mitsubishi Chemical Corporation
公开号:EP2270069A1
公开(公告)日:2011-01-05
An object of the present invention is to provide a conjugated polymer which has a high hole transportability and is excellent in solubility and depositability. Another object of the present invention is to provide an organic electroluminescence element which is capable of low voltage driving and has a high luminous efficiency and drive stability. The conjugated polymer of the present invention is a conjugated polymer containing a specific structure as the repeating unit, where the conjugated polymer contains an insolubilizing group as a substituent, the weight average molecular weight (Mw) is 20,000 or more and the dispersity (Mw/Mn) is 2.40 or less.