Pociecha Damian, Vaupotič Nataša, Majewska Magdalena, Cruickshank Ewan, Walker Rebecca, Storey John M D, Imrie Corrie T, Wang Cheng, Gorecka Ewa
Faculty of Chemistry, University of Warsaw, Zwirki i Wigury 101, Warsaw, 02-089, Poland.
Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška 160, Maribor, 2000, Slovenia.
Adv Mater. 2021 Oct;33(39):e2103288. doi: 10.1002/adma.202103288. Epub 2021 Aug 16.
Achiral mesogenic molecules are shown to be able to spontaneously assemble into liquid crystalline smectic phases having either simple or double-helical structures. At the transition between these phases, the double-helical structure unwinds. As a consequence, in some temperature range, the pitch of the helix becomes comparable to the wavelength of visible light and the selective reflection of light in the visible range is observed. The photonic bandgap phenomenon is reported for achiral liquid crystals.
非手性介晶分子能够自发组装成具有简单或双螺旋结构的液晶近晶相。在这些相之间的转变过程中，双螺旋结构会展开。因此，在某些温度范围内，螺旋的螺距变得与可见光的波长相当，并且在可见光范围内观察到光的选择性反射。报道了非手性液晶的光子带隙现象。
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