The fabrication of helical fibers with circularly polarized luminescence viaionic linkage of binaphthol and tetraphenylethylene derivatives

July 28, 2017

Title

The fabrication of helical fibers with circularly polarized luminescence viaionic linkage of binaphthol and tetraphenylethylene derivatives

Author

Qiang Ye, Dandan Zhu, Lianyi Xu, Xuemin Lu, Qinghua Lu

Year

2016

Journal

Journal of Materials Chemistry C

Abstract

Assemblies with helical fiber nanostructures were fabricated via simple ionic linkage of a cationic tetraphenylethylene derivative (TPEHexN+) and an anionic binaphthyl derivative (SBNPSO3− orRBNPSO3−). 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.

Instrument

J-815

Keywords

Circular dichroism, Nanostructures, Circularly polarized luminescence, Materials