BINOL induces chirality in polyfluorene-based electroluminescent polymers in solid state

被引：0

作者：

Yuan, Chenyuhe ^{[1
]}

Eguchi, Keitaro ^{[1
]}

Murata, Hideyuki ^{[1
]}

机构：

[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2024年 / 63卷 / 02期

关键词：

circular dichroism; chiral inducing; F8BT; BINOL; CIRCULARLY-POLARIZED ELECTROLUMINESCENCE; CONJUGATED POLYMER; LUMINESCENCE;

D O I：

10.35848/1347-4065/ad0413

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nowadays circularly polarized luminescence (CPL) gains much attraction because it can be applied to a variety of fields. An efficient method to achieve CPL is blending achiral emissive polymers with chiral small-molecule additives as a chiral inducer. In this work, we demonstrate that 1,1 '-Bi-2-naphthol (BINOL) acts as a chiral-inducer for poly (9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) in a thin film. In the thin films of F8BT/BINOL before annealing, only circular dichroism (CD) signals of BINOL were observed. After the annealing at 120 degrees C, clear CD signals of F8BT were observed indicating that the chiroptical property was induced on the F8BT thin films. The CD signal intensity was enhanced by increasing the annealing temperature up to 200 degrees C. By optimizing the concentration of BINOL and the annealing temperature, we obtained a dissymmetry CD value of 0.012. Photoluminescence quantum yield of the F8BT/BINOL thin films was also increased after the annealing.

引用

页数：6