作者:Johannes Christian Haenle、Yannick Stöckl、Robert Forschner、Elena Haenle、Sabine Laschat
DOI:10.1002/cphc.201800449
日期:2018.10.19
for the first time in donor acceptor dyes. Thus, a series of mono‐, bi‐, and tricyclic donor acceptor dyes with 1H,1H‐perfluorinated alkyl chains of different lengths as donor units and nitrile, malononitrile or barbiturate as acceptor units was synthesized in 5 steps and 1.4–6.6 % overall yield. UV/Vis and fluorescence spectroscopy, cyclic voltammetry and DFT calculations revealed that absorption and
为了在同一分子中结合液晶和线性光学特性,首次在供体受体染料中检测了疏水效应。因此,一系列具有1 H,1 H的单环,双环和三环供体受体染料以5个步骤合成了长度不同的全氟化烷基链作为供体单元,并以腈,丙二腈或巴比妥酸酯为受体单元,总收率为1.4–6.6%。UV / Vis和荧光光谱,循环伏安法和DFT计算表明,吸收和发射最大值,斯托克斯位移和LUMO能量主要受发色团尺寸和受体强度的控制。与烷基取代的对应物相比,全氟化链几乎与剩余的生色团在电子上解偶联,并且仅引起吸收最大值的轻微变化。但是,与非亚晶型烷基供体取代的衍生物相反,全氟供体根据差示扫描量热法(DSC)导致自组装成部分相互交叉的SmA双层,