Phasing up to matters: Hexagonal columnar mesophases have been formed by polysilacage compounds based on 1-alkyl-2,3,5,6,7,8-hexasilabicyclo[2.2.2]octanes that contain neither aromatic rings nor long alkyl chains. These mesophases have been characterized by polarizing optical photomicroscopy (see picture), differential scanning calorimetry, and diffraction studies.
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Shimizu et al. (2007) studied this question.
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