Herein, we report a stimulus-responsive supercooled πconjugated liquid and the possibility of its application in rewritable media. Supercooled liquid 1 showed a dramatic change in its photoluminescent color upon the transformation from liquid 1l (yellow emission) to solid 1s (green emission). These phenomena were revealed by fluorescence spectra as well as lifetime decay profiles.
We report the circularly
polarized luminescence (CPL) for [Ru(bpy)3]I2 (1) and [Ru(bpy)3][M2(ox)3] (M = Zn (2), Mn (3)). Whereas
compound 1 is a simple salt of [Ru(bpy)3]2+, 2 and 3 are MOFs
in which the chiral [Ru(bpy)3]2+ ions are encapsulated
in a homochiral gyroidal skeleton of [M2(ox)3]2–. Whereas the solution of 1 exhibited
weak CPL with a luminescence dissymmetry factor of |g
lum| ∼ 10–4, the CPL was significantly
enhanced in solid-state 1–3 with
|g
lum| = 2 × 10–2 for 1, 4 × 10–2 for 2, and 1 × 10–1 for 3. The enhanced
CPL in 3 was attributable to an energy transfer between
the homochiral guest and host in 3.
We synthesized chiral dimeric chiral nematic (N*) liquid crystals bearing tri(p-phenylene vinylene) units. The mixture of the dimeric compounds and monomeric chiral liquid crystal exhibited a glassy N* phase at...
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