The introduction of biuret hydrogen-bonding sites onto chiral binaphthalene-based chromophores was investigated as a route to sub-micron-sized, vesicle-like aggregates endowed with chiroptical properties. The synthesis was conducted from the corresponding chiral 4,4′-dibromo-1,1′-bis(2-naphthol) via Suzuki–Miyaura coupling to afford luminescent chromophores whose emission spectrum could be tuned from
                                    研究了将缩二
脲氢键位点引入手性联
萘基发色团,作为获得具有手性光学特性的亚微米级囊泡状聚集体的途径。合成是从相应的手性 4,4'-dibromo-1,1'-bis(2-naphthol) 通过 Suzuki-Miyaura 偶联进行的,以提供发光发色团,其发射光谱可以通过扩展从蓝色调到黄绿色共轭。对于所有化合物,自发形成直径为 ca 的空心球。扫描电子显微镜证明了 200–800 nm,以及圆偏振吸收光谱中的强不对称性。对于某些化合物,发射还显示圆偏振,其值为 glum = ca。10-3 可以在聚合时增加。