Abstract
High resolution electron microscopy, selected-area electron diffraction (SAD), and digital recording of electron diffraction intensities have been used to study the structure properties and electron beam sensitivity of pristine and osmium-tetroxide-treated monolayer (Langmuir-Blodgett) films of the polydiacetylene, 10, 12-nonacosadiynoic acid. Electron diffraction and computed b-c projections of the Patterson function of self-supporting polydiacetylene monolayers indicated that the packing symmetry is unaffected by the osmate ester reaction. These results are combined with published data and used to support the contention that the deleterious secondary processes which limit attainable resolution of organic polymers can be minimized by heavy-metal “staining”.
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