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