Microscopic observations of RGB circularly polarized luminescence from solid microspheres with liquid crystalline molecular order

Micro-particles with an internal helical liquid crystalline (LC) molecular order serve as efficient and highly compact circularly polarized luminescence (CPL) emitters. However, the coupling between CPL emission and the interior LC molecular order remains poorly understood at the single particle level. Here, we synthesized microspheres from an LC monomer RM23 together with a fluorescent dye and a chiral additive (R/S-BPy) and investigated their CPL properties. Polarized optical microscopy and angle-dependent CPL observations at a single-particle level revealed randomly distributed one-handed helical domains in each sphere, leading to CPL emission with an average dissymmetry factor value |<i>g</i> <sub>lum</sub>| of 0.05 regardless the observation angle. The color of the CPL emission is tunable in the range of 450-700 nm by varying the fluorescent dyes doped in the spheres.

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Publication Details

Journal
Science and Technology of Advanced Materials
Published
2025-05-28
DOI
https://doi.org/10.1080/14686996.2025.2509486
Citations
2
Primary Topic
Synthesis and Properties of Aromatic Compounds
Type
article
Field-Weighted Citation Impact
1.87

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article

Microscopic observations of RGB circularly polarized luminescence from solid microspheres with liquid crystalline molecular order

Wey Yih Heah, Reïko Oda, Wijak Yospanya, Chunya Fu et al.
2 citations
Science and Technology of Advanced Materials
Synthesis and Properties of Aromatic Compounds
1.87
article

Microscopic observations of RGB circularly polarized luminescence from solid microspheres with liquid crystalline molecular order

Wey Yih Heah, Reïko Oda, Wijak Yospanya, Chunya Fu, Hiroshi Yamagishi, Yohei Y. Yamamoto, Kun Li, Yixiang Cheng, Sota Nakayama
article en
2 citations

Abstract

Micro-particles with an internal helical liquid crystalline (LC) molecular order serve as efficient and highly compact circularly polarized luminescence (CPL) emitters. However, the coupling between CPL emission and the interior LC molecular order remains poorly understood at the single particle level. Here, we synthesized microspheres from an LC monomer RM23 together with a fluorescent dye and a chiral additive (R/S-BPy) and investigated their CPL properties. Polarized optical microscopy and angle-dependent CPL observations at a single-particle level revealed randomly distributed one-handed helical domains in each sphere, leading to CPL emission with an average dissymmetry factor value |<i>g</i> <sub>lum</sub>| of 0.05 regardless the observation angle. The color of the CPL emission is tunable in the range of 450-700 nm by varying the fluorescent dyes doped in the spheres.

Science and Technology of Advanced MaterialsVol. 26(1)
Centre National de la Recherche Scientifique (FR), University of Tsukuba (JP), Université de Bordeaux (FR), Tohoku University (JP), Advanced Institute of Materials Science (JP), Chimie et Biologie des Membranes et des Nanoobjects (FR), Institut Polytechnique de Bordeaux (FR), Nanjing University (CN)
Hirose Foundation, Japan Society for the Promotion of Science, Japan Science and Technology Agency, Core Research for Evolutional Science and Technology, ACT-X, Fusion Oriented REsearch for disruptive Science and Technology
Openalex Percentile: Top 15%
Synthesis and Properties of Aromatic Compounds
1.87
DOIOpen Access PDFOpenAlex
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