Photonic crystals

Aggarwal, Mohan D.; Wang, W.S.; Bhat, Kamala N.; Penn, Benjamin G.; Frazier, Donald O.

doi:10.1016/b978-012513745-4/50075-5

Cited by 12 publications

(2 citation statements)

References 206 publications

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“…rystallization is a ubiquitous process that can create largescale order from atomic or molecular components 1 . Crystal growth is critical in applications such as protein 2 and molecular structure determination 3 , the manufacture of nanoparticles 4 , catalysts 5 , and photonic materials 6,7 and for the self-assembly of large-scale ordered materials from molecular components by design [8][9][10][11][12][13][14] . Living systems also form many ordered structures, such as calcium carbonate structures or cytoskeletal filaments, through crystallization [15][16][17] .…”

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confidence: 99%

Feedback regulation of crystal growth by buffering monomer concentration

Schaffter

Scalise

Murphy³

et al. 2020

Nat Commun

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Crystallization is a ubiquitous means of self-assembly that can organize matter over length scales orders of magnitude larger than those of the monomer units. Yet crystallization is notoriously difficult to control because it is exquisitely sensitive to monomer concentration, which changes as monomers are depleted during growth. Living cells control crystallization using chemical reaction networks that offset depletion by synthesizing or activating monomers to regulate monomer concentration, stabilizing growth conditions even as depletion rates change, and thus reliably yielding desired products. Using DNA nanotubes as a model system, here we show that coupling a generic reversible bimolecular monomer buffering reaction to a crystallization process leads to reliable growth of large, uniformly sized crystals even when crystal growth rates change over time. Buffering could be applied broadly as a simple means to regulate and sustain batch crystallization and could facilitate the self-assembly of complex, hierarchical synthetic structures.

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mentioning

confidence: 99%

Feedback regulation of crystal growth by buffering monomer concentration

Schaffter

Scalise

Murphy³

et al. 2020

Nat Commun

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“…Not only photonics deals with the synergy between optics and electronics, it also provides the ties between optical materials, devices and systems. The inventions of lasers and nonlinear optical phenomena (NLO) have opened up many new areas of devices and systems, like frequency conversion and optical switching, that are of practical interest to mankind [17]. The NLO effect in the organic molecules originates from a strong donoracceptor intermolecular interaction, a delocalized π-electron system, and is also due to the ability to crystallize in non-centrosymmetric manner.…”

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confidence: 99%

Synthesis and characterization of some chalcones and their cyclohexenone derivatives

2010

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A series of chalcones and their derivatives have been synthesized. Chalcones, 1-(1,3-benzodioxol-5-yl)-3-(aryl)-prop-2-en-1-ones were prepared by the aldol condensation of 1-(1,3-benzodioxol-5-yl)ethanones and aryl aldehydes. Based-catalyzed condensation of 1-(1,3-benzodioxol-5-yl)-3-(aryl)prop-2-en-1-ones with ethyl acetoacetate yields corresponding ethyl 4-(1,3-benzodioxol-5-yl)-6-(aryl)-2-oxocyclohex-3-ene-1-carboxylates. Some of the synthesized chalcones were reported in the literature; the newly synthesized compounds were characterized by single crystal X-ray studies, IR, 1 H-NMR and LCMS mass spectral analysis.

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