The fabrication of helical fibers with circularly polarized luminescence via ionic linkage of binaphthol and tetraphenylethylene derivatives
The fabrication of helical fibers with circularly polarized luminescence via ionic linkage of binaphthol and tetraphenylethylene derivatives
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DOI：
10.1039/c5tc04174k
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发表时间：
2016-02
影响因子：
6.4
通讯作者：
Q. Ye;Dandan Zhu;Lianyi Xu;Xuemin Lu;Q. Lu
中科院分区：
文献类型：
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作者：
Q. Ye;Dandan Zhu;Lianyi Xu;Xuemin Lu;Q. Lu
通过阳离子四苯乙烯衍生物（TPEHexN+）和阴离子联萘衍生物（SBNPSO 3-或RBNPSO 3-）的简单离子键，制备了具有螺旋纤维纳米结构的组装体。手性研究表明，所制备的SBNP-TPEHN和RBNP-TPEHN组装体在固态下在TPE部分的吸收带处分别表现出+0.065和-0.063的高不对称因子。它们的薄膜的圆偏振发光在442 nm处也具有高的平均不对称因子（SBNP-TPEHN为+3.8 × 10 - 2，RBNP-TPEHN为-4.2 × 10 - 2）。通过扫描电子显微镜（SEM）对纤维结构进行了表征。提出了螺旋纤维形成的一种假设机制。
Assemblies with helical fiber nanostructures were fabricated via simple ionic linkage of a cationic tetraphenylethylene derivative (TPEHexN+) and an anionic binaphthyl derivative (SBNPSO3− or RBNPSO3−). Chiroptical studies showed that the as-prepared SBNP–TPEHN and RBNP–TPEHN assemblies in the solid state exhibited high dissymmetry factors of +0.065 and −0.063 at the absorption band of TPE moieties, respectively. The circularly polarized luminescence of their films also had high average dissymmetry factors at 442 nm (+3.8 × 10−2 for SBNP–TPEHN, and −4.2 × 10−2 for RBNP–TPEHN). The fiber structures were characterized by scanning electron microscopy (SEM). A hypothetical mechanism for the formation of helical fibers is proposed.