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Triplets in extended nematic liquid crystals and polarons in their blends
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Image of FIG. 1.
FIG. 1.

Chemical structures of the polymerizable liquid crystals and the perylene. Tg is the glass transition temperature, Cr is crystal, N is nematic phase, and 1 is isotropic liquid. 1 is a monotropic liquid crystal which forms nematic phase when the material is heated to form the isotropic liquid and then cooled down to the specified temperature.

Image of FIG. 2.
FIG. 2.

PIA spectrum of 1–3 at at at .

Image of FIG. 3.
FIG. 3.

PIA from compounds 1–3 as a function of frequency at using an incident irradiance of . The points represent data, and the solid lines are fits using Eq. (2).

Image of FIG. 4.
FIG. 4.

PIA vs intensity of 1 , 2 , and 3 at at .

Image of FIG. 5.
FIG. 5.

Optical absorption spectra of a homologue of 1, when undoped and mixed with different concentrations of in dichloromethane. The absorption spectrum of is shown for reference.

Image of FIG. 6.
FIG. 6.

PIA spectrum of 1 and its blend with 4 at at at .

Image of FIG. 7.
FIG. 7.

PIA of 1 and 9 blend vs frequency at 1.77 and , respectively, at at .


Generic image for table
Table I.

Summary of the optical transitions and characteristics of 1–3.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Triplets in extended nematic liquid crystals and polarons in their blends