Abstract
The topochemical polymerization of a diacetylenic lipid with two chains is studied by fluorescence and electron microscopy, electron diffraction, spectroscopic and film balance techniques. It is shown that, dependent on the temperature of pressure-induced crystallization, two different crystallographic structures result. Their crystalline nature is reflected in their morphology as well as in electron diffraction patterns with very sharp regions. The differences in the lattice structure correspond to differences in polymer structure as revealed by distinct absorption and emission spectra and emission intensities that are different by a factor of 100. Polymerization of the low temperature structure proceeds faster than that of the high temperature modification by more than a factor of 5.
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