[LCT2-2(Invited)] Fluorinated Tolane-Based Photoluminescence Liquid Crystals with Both Photoluminescence and Room-Temperature Smectic Liquid-Crystalline Properties | The 32nd International Display Workshops (IDW '25)

The 32nd International Display Workshops (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

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The 32nd International Display Workshops (IDW '25)

Dec 2 - Dec 5, 2025International Convention Center Hiroshima

[LCT2-2(Invited)]Fluorinated Tolane-Based Photoluminescence Liquid Crystals with Both Photoluminescence and Room-Temperature Smectic Liquid-Crystalline Properties

*Shigeyuki Yamada¹, Motohiro Yasui¹, Tsutomu Konno¹(1. Kyoto Institute of Technology (Japan))

https://doi.org/10.36463/idw.2025.0032

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Keywords:

Liquid Crystal,Smectic LC,Photoluminescence,Fluorinated Tolane

In this study, we observed different photoluminescence (PL) behaviors and the formation of enantiotropic smectic A (SmA) phases in the crystalline (Cr) phase for fluorinated tolane derivatives with imidazolium salts at the end of the decyleneoxy flexible chains. Notably, the derivatives with large counteranion formed the SmA phase in the room temperature region, and the PL behaviors were found to significantly change via phase transition between Cr and SmA phases.

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