Syntheses of Ladder-Type Oligonaphthalene Derivatives and Their Photophysical and Electrochemical Properties
作者:Jun-Chun Chen、Tse-Shi Lee、Chih-Hsiu Lin
DOI:10.1002/chem.200700830
日期:2008.3.17
Ladder-type oligophenylene derivatives are important compounds for light-emitting devices. However, the closely related ladder-type oligonaphthalene derivatives have received little attention due to the lack of synthetic accessibility. We hereby report the syntheses of these novel conjugated systems by means of an intramolecular cationic cyclization protocol. Utilizing a one-pot-multiple-component
梯型低聚亚苯基衍生物是发光器件的重要化合物。然而,由于缺乏合成可及性,密切相关的梯型低聚萘衍生物很少受到关注。我们在此通过分子内阳离子环化方案报告这些新型共轭体系的合成。利用一锅多组分反应,这些阶梯型低聚物直至五聚体的无环前体可以仅用两步或三步就可以由小片段合成。光物理和电化学研究表明,与常规的非平面化的低聚萘衍生物相比,这些化合物中的电子离域显着增强。但是,这种作用远比在完全平面的萘嵌苯衍生物中发现的作用要弱得多。