Engineering Crystal Symmetry and Polar Order in Molecular Host Frameworks

A crystal design strategy is described that produces a series of solid-state molecular host frameworks with prescribed lattice metrics and polar crystallographic symmetries. This represents a significant advance in crystal engineering, which is typically limited to manipulation of only gross structu...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 2001-11, Vol.294 (5548), p.1907-1911
Hauptverfasser: Holman, K. Travis, Pivovar, Adam M., Ward, Michael D.
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container_issue 5548
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container_title Science (American Association for the Advancement of Science)
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creator Holman, K. Travis
Pivovar, Adam M.
Ward, Michael D.
description A crystal design strategy is described that produces a series of solid-state molecular host frameworks with prescribed lattice metrics and polar crystallographic symmetries. This represents a significant advance in crystal engineering, which is typically limited to manipulation of only gross structural features. The host frameworks, constructed by connecting flexible hydrogen-bonded sheets with banana-shaped pillars, sustain one-dimensional channels that are occupied by guest molecules during crystallization. The polar host frameworks enforce the alignment of these guests into polar arrays, with properly chosen guests affording inclusion compounds that exhibit second harmonic generation because of this alignment. This protocol exemplifies a principal goal of modern organic solid-state chemistry: the precise control of crystal symmetry and structure for the attainment of a specific bulk property.
doi_str_mv 10.1126/science.1064432
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subjects Architecture
Bricks
Charge separation
Chemical engineering
Chemical engineering research
Condensed matter: structure, mechanical and thermal properties
Crystal structure
Crystallography
Crystals
Engineering
Exact sciences and technology
Experiments
Fundamental areas of phenomenology (including applications)
Inclusions
Inorganic compounds
Lattice parameters
Miscellaneous
Molecules
Nonlinear optical crystals
Optical materials
Optics
Organic Chemistry
Physics
Structure
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Symmetry
Tetrahedrons
title Engineering Crystal Symmetry and Polar Order in Molecular Host Frameworks
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