Browsing Chemistry (Scholarly Publications) by Title
Now showing items 80-99 of 876
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Characterization of graphene-silicon Schottky barrier diodes using impedance spectroscopy
(2013)We investigate the interface characteristics of graphene-silicon Schottky barrier diodes using dc current-voltage measurements and ac impedance spectroscopy (IS). Diode parameters, including the ideality factor and the ... -
Charge localization increases chemical expansion in cerium-based oxides
(2012)In this work, we demonstrate the mechanism by which electronic charge localization increases the chemical expansion coefficient in two model systems, CeO 2-? and BaCeO 3-?. Using Density Functional Theory calculations, we ... -
Charge-modulated self-assembly and growth of conjugated polyelectrolyte-polyoxometalate hybrid networks.
(2014)Self-assembly of an anionic polyoxometalate with cationic conjugated polyelectrolytes leads to hybrid supramolecular networks whose dimensionality is controlled by the chain length and steric charge distribution. -
Chemical bonding in copper-based transparent conducting oxides: CuMO(2) (M = In, Ga, Sc)
(Institute of Physics, 2011)The geometry and electronic structure of copper-based p-type delafossite transparent conducting oxides, CuMO(2) (M = In, Ga, Sc), are studied using the generalized gradient approximation (GGA) corrected for on-site Coulomb ... -
Chemical microscopy and nanoscopy of bio-materials and living cells, IRMMW-THz
(IEEE, 2010)Raman microspectroscopy of human sperm cells and nearfield infrared microscopy of nanoscale biomaterials like nanografted DNA have been performed. A newly developed station for the ANKA-IR2 beamline combines several ... -
Chemical synthesis and medicinal applications of glycoporphyrins
(2015)This review presents an in-depth overview of the modification of porphyrins with bioconjugates and their applications in medicine today. Porphyrin bioconjugates ranging from nucleotides to steroids are under active ... -
Chemical Synthesis in Solution and Porphyrin Nanostructures on Surfaces - Similar Concepts, Different Results.
(2013)The chemistry of porphyrins is reaching out to more complex and ever larger polyporphyrin arrays. In solution the synthesis of porphyrin arrays is greatly aided by recent advances in organometallic chemistry which now ... -
Chemically Modulated Graphene Diodes
(2013)We report the manufacture of novel graphene diode sensors (GDS), which are composed of monolayer graphene on silicon substrates, allowing exposure to liquids and gases. Parameter changes in the diode can be correlated with ... -
Chemoselective crossed acyloin condensations: catalyst and substrate control
(2011)The interplay between catalyst and substrate control in crossed acyloin condensation reactions has been studied. It was found that a pentafluorophenyl-substituted triazolium ion derived catalyst was capable of catalyzing ... -
Chiral luminescent CdS nano-tetrapods
(Royal Society of Chemistry, 2010)The utilisation of chiral penicillamine stabilisers allowed the preparation of new water soluble white emitting CdS nano-tetrapods, which demonstrated circular dichroism in the band-edge region of the spectrum. -
Chiral nanoparticle assemblies: circular dichroism, plasmonic interactions, and exciton effects
(2011)The paper reviews recent progress on chiral nanocrystal assemblies with induced optical chirality and related circular dichroism. Many natural molecules and biomolecules are chiral and exhibit remarkably strong optical ... -
Chiral quantum supercrystals with total dissymmetry of optical response
(2016)Since chiral nanoparticles are much smaller than the optical wavelength, their enantiomers show little difference in the interaction with circularly polarized light. This scale mismatch makes the enhancement of enantioselectivity ... -
Chloro(2,3,7,8,12,13,17,18-octaethylporphyrinato)iron(III)
(2005)The molecular structure of the title compound, [Fe(C36H44N4)Cl], was determined by single-crystal X-ray diffraction at 130 K. The compound is characterized by an average Fe?N bond length of 2.071 (2) A E and an Fe?Cl ... -
Chlorophylls, Symmetry, Chirality, and Photosynthesis.
(2014)Chlorophylls are a fundamental class of tetrapyrroles and function as the central reaction center, accessory and photoprotective pigments in photosynthesis. Their unique individual photochemical properties are a consequence ... -
Classic highlights in porphyrin and porphyrinoid total synthesis and biosynthesis
(2021)Porphyrins feature prominently in nature, be it as enzymatic cofactors, electron and exciton shuffles, as photoactive dyes, or as signaling substances. Their involvement in the generation, storage and use of oxygen is ... -
Co-percolation to tune conductive behaviour in dynamical metallic nanowire networks
(2016)Nanowire networks act as self‐healing smart materials, whose sheet resistance can be tuned via an externally applied voltage stimulus. This memristive response occurs due to modification of junction resistances to form a ... -
Cobalt-catalyzed ammonia borane dehydrogenation: Mechanistic insight and isolation of a cobalt hydride-amidoborane complex
(2020)A Co(I) complex featuring the electron-rich monoanionic bis(carbene) aryl pincer ligand (MesCCC) (MesCCC = bis(2,4,6-trimethylphenyl-benzimidazol-2-ylidene)phenyl), (MesCCC)Co-py (1), was found to catalytically dehydrogenate ... -
Collective capacitive and memristive responses in random nanowire networks: Emergence of critical connectivity pathways
(2018)Random nanowire networks (NWNs) are promising synthetic architectures for non-volatile memory devices and hardware-based neuromorphic applications due to their history-dependent re- sponses, recurrent connectivity, and ...