α-Periodicity is Spontaneously Phased in an Acicular Sulfuric-Recrystallized Precipitate of Copper Phthalocyanine
A persuasive α-polymorphous inherency in sulfuric-recrystallized phthalocyanine materials is rooted out. The tessellation is a transformational and heritable hybrid from a phthalocyanine representative’s sulfate state to its sulfate-free one in spontaneous α-recrystallization. The structural hallmark of a residual precursor is absent as long as the anhydrous sulfuric-acid molecules are allowed for coordinate phthalocyanine material bases. In the exclusion from powdery remains, our devotional interpretation of acicular sulfate provides the less incautious fidelity. In the 7-day-open systems, the slurry of acicular sulfate is IR-behaviorally and tinctorially analogous to its rinsed one. The IR-analogy intuitively embodies the interplay among sulfate sediment, separative liquid layer and extraterritorial air contact. To undermine the open slurry less intricately, the strategy relies on the removal of sulfuric liquid in the IR-incident as-precipitated sulfuric slurry. A fall in the liquid neighbor shifts and intensifies the pivot fingerprint from 729-close slide to 720-close one (cm-1) with a green-bluish shade in the sulfate cluster. A puny blue variation in hue indicates that an acicula is in partial distress of sulfate species during β-to-α alignment. We suggest a convincing path for the coexistence of a crystalline manifold in the acicula. Mobile water and active sulfuric-acid molecules interdiffuse at the surface of a sulfate when the sulfate experiences an unbearably compositional change in the vicinal sulfuric liquid. The interdiffusion rearranges the newborn β-stack into α-dominant, β-runner-up, and their intermediate in the acicular sulfate. The contractile convective convert infers the tendency of outright α-arrangement no longer lingers under spontaneous dilution.
Copyright (c) 2020 Kai-Wei Liu
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