Oligomers with a Tetrasubstituted Benzene Core

Compound Ttiax, abs (film) max, cm (film)] 2max, cm (crystal) max, em (Solution) 

40 -nm red shift was observed. The crystalline samples were thermally cycled (melting/cooling) and their optical spectra and X-ray diffraction (XRD) patterns recorded. Examination of the powder XRD patterns revealed that 20e forms a glassy state after melting/cooling the sample. The loss of crystallinity was accom- 

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