Substituted Terminal Alkyl Groups and Their Prospects in Liquid Crystal Chemistry

1986 ◽  
Vol 131 (3) ◽  
pp. 353-360 ◽  
Author(s):  
Maged Osman
Keyword(s):  
Liquid Crystal ◽  
Crystal Chemistry ◽  
Alkyl Groups

Functionalized Dibenzo[g,p]chrysenes: Variable Photophysical and Electronic Properties and Liquid−Crystal Chemistry

2008 ◽  
Vol 10 (14) ◽  
pp. 3053-3056 ◽  
Author(s):  
Rupsha Chaudhuri ◽  
Ming-Yu Hsu ◽  
Chia-Wen Li ◽  
Cheng-I Wang ◽  
Chun-Jung Chen ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electronic Properties ◽  
Crystal Chemistry

scholarly journals Liquid crystal chemistry and poetry

2021 ◽  
Author(s):  
David Dunmur
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Crystal Chemistry ◽  
Basic Science ◽  
Recent Article ◽  
Literature And Science ◽  
Epic Poem ◽  
Renaissance Poetry ◽  
Long Time ◽  
Literary Device

AbstractThis paper comments on a recent article “Revolutionary poetry and liquid crystal chemistry: Herman Gorter, Ada Prins and the interface between literature and science” by Hub Zwart (Foundations of Chemistry, published online: 10 July 2020), in which the author explores the influence of the liquid crystal research of Ada Prins on the epic poem Pan written by her long-time lover Herman Gorter. The present paper reviews the basic science of liquid crystals and explains the connections between the work of Prins and its influence on the poem. Other examples of the use of “liquid crystal” as a literary device are identified from renaissance poetry, and the uses of the metaphor in these poems are analysed from a scientific perspective. From these examples it is suggested that creative concepts from poetry may contain elements of substance that appear in hitherto unrecognised scientific realities.

scholarly journals Vertical Liquid Crystal Alignment of Comb-Like Alkyl Hydroxybenzoate-Substituted Polystyrene

Crystals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 281 ◽  
Author(s):  
Changha Ju ◽  
Shinwoo Kang ◽  
Taehyung Kim ◽  
Chanhyuk Park ◽  
Hyo Kang
Keyword(s):  
Liquid Crystal ◽  
Surface Energy ◽  
Polymer Film ◽  
Polymer Films ◽  
Molar Fraction ◽  
Side Chain ◽  
Alignment Layer ◽  
Dc Voltage ◽  
Alkyl Groups ◽  
Crystal Alignment

We investigated the liquid crystal (LC) alignment behaviors of butyl hydroxybenzoate-substituted polystyrene (PBHB#; # = 20, 40, 60, 80, and 100, where # indicates the molar fraction of butyl hydroxybenzoate in the side chain), methyl hydroxybenzoate-substituted polystyrene (PMHB100), and ethyl hydroxybenzoate-substituted polystyrene (PEHB100). Generally, LC cells made employing polymer films having longer alkyl groups in the side chain show vertical LC alignment. For instance, a LC cell fabricated with the PMHB100 film showed random planar LC alignment, while the LC cells made from the PEHB100 and PBHB100 films exhibited vertical LC alignment. Moreover, LC cells prepared from a polymer film having a higher molar content of butyl hydroxybenzoate in the side chain exhibited vertical LC alignment. The observed vertical LC alignment behaviors are closely related to the surface energy of these polymer films. For instance, vertical LC alignment was observed when the surface energy of the polymer film was less than ~43.86 mJ/m2, which could result from the nonpolar alkyl groups of the alkyl hydroxybenzoate moiety. The LC cell prepared from PBHB100 as the LC alignment layer showed good electro-optical characteristics such as voltage holding ratio, residual DC voltage, and alignment stability at 200 °C.

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