Synthesis and Photophysical Properties of Extended π-Conjugative and Push–Pull-Type 1,4-Diaryl-1-thio-1,3-butadienes Incorporated in a Dibenzobarrelene Skeleton
作者:Tatsuro Annaka、Norio Nakata、Akihiko Ishii
DOI:10.1246/bcsj.20140351
日期:2015.4.15
1,4-Bis(p-ethynylphenyl)-1-thio-1,3-butadiene derivatives incorporated in a dibenzobarrelene skeleton were yielded by Sonogashira reactions of the corresponding 1,4-bis(p-halophenyl) derivatives, and push–pull-type sulfoxide and sulfone derivatives were obtained by oxidation of the amino derivative prepared by Buchwald–Hartwig reaction of the 1,4-bis(p-halophenyl) derivatives. These compounds show red-shifted yellow and orange fluorescence [λem(CH2Cl2) = 522–562 nm, λem(solid) = 522–580 nm] in comparing with the unsubstituted, 1,4-diphenyl-1-thio-1,3-butadiene derivative [λem(CH2Cl2) = 491 nm, λem(solid) = 483 nm].
通过相应的 1,4-双(对卤代苯基)衍生物的 Sonogashira 反应,得到了以二苯并巴比林为骨架的 1,4-双(对乙炔基苯基)-1-硫-1,3-丁二烯衍生物;通过 1,4-双(对卤代苯基)衍生物的 Buchwald-Hartwig 反应制备的氨基衍生物的氧化作用,得到了推拉型亚砜和砜衍生物。与未取代的 1,4-二苯基-1-硫-1,3-丁二烯衍生物[λem(CH2Cl2) = 491 nm,λem(solid) = 483 nm]相比,这些化合物显示出红移的黄色和橙色荧光[λem(CH2Cl2) = 522-562 nm,λem(solid) = 522-580 nm]。