Results 241 to 250 of about 355,560 (277)
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The role of borole in a fully conjugated electron-rich system
Chemical Communications, 2004The reaction of the 3,3[prime or minute]-dilithiobithieno complex with TipB(OMe)(2) affords a borole with an extended conjugated electron-rich [small pi]-electron system; the electronic perturbation by the introduction of push-pull substituents is described.
Sanghoon, Kim +3 more
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Optimal Shapes of Fully Embedded Channels for Conjugate Cooling
Advanced Energy Systems, 1999Abstract Optimal shapes and geometries are determined for systems involving liquid and gas coolants. The shape of the channel boundary, channel width, and wall thickness are varied to minimize overall thermal resistance under flow constraints involving pressure drop and pump work.
T.S. Fisher, K.E. Torrance
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Macrocyclic Aromaticity of Porphyrin Units in Fully Conjugated Oligoporphyrins
The Journal of Physical Chemistry A, 2012Individual porphyrin macrocycles in fully conjugated oligoporphyrins exhibit different degrees of macrocyclic aromaticity. We proposed a theoretical method for estimating the degrees of macrocyclic aromaticity of these porphyrin units. This method, based on the concept of bond resonance energy, is applicable to all types of porphyrin oligomers. We then
Masakazu, Makino, Jun-ichi, Aihara
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A novel fully conjugated phenanthroline-appended phthalocyanine: synthesis and characterisation
Chemical Communications, 2002The synthetic route to a new fully conjugated phenanthroline appended phthalocyanine is described. This compound has been fully characterised by elemental analysis, UV-VIS, IR, MS and 1H NMR spectroscopy.
Rusanova J, Pilkington M, Decurtins S
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Synthesis and characterization of fully conjugated porphyrin tapes
Israel Journal of Chemistry, 2005Abstractmeso‐meso, ß‐ß, ß‐ß Triply‐linked zinc(II) porphyrin tapes were synthesized by powerful oxidation of meso‐meso‐linked zinc(II) porphyrin arrays up to tetramers with DDQ‐Sc(OTf)3. Coordination of butylamine to zinc(II) ions of porphyrin rings dissociates their aggregation, resulting in clear NMR spectra and sharper red‐shifted absorption bands.
Takahisa Ikeue +2 more
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Synthesis and Properties of a New Class of Fully Conjugated Azahexacene Analogues
Angewandte Chemie, 2014AbstractAcenes are a traditional class of polycyclic aromatic hydrocarbons (PAHs) which attracted considerable interest during the last decade because of their outstanding p‐channel semiconductor properties. More recently, N‐heteroacenes have been prepared.
Wan, Yue +4 more
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Fully automated synthesis of peptide-oligonucleotide conjugates
2002An efficient synthetic strategy for the on-line preparation of oligonucleotide-peptide conjugates is here presented.
ROMANELLI, ALESSANDRA +8 more
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Synthesis and polymerisation of fully conjugated polyether-substituted terthiophenes
Synthetic Metals, 2003A range of 3'-styryl polyether-functionalised terthiophene monomers were synthesised via Horner-Emmons reactions, and electrochemical and chemical polymerizations were carried out on some of these compounds. Analysis of the products by UV/VIS, MALDI-MS and NMR revealed that they exclusively form 'head-to-head' dimers.
D.K. Grant, D.L. Officer, A.K. Burrell
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Fully numerical solution of photorefractive phase conjugation of pulses
Optical Society of America Annual Meeting, 1991We present a full numerical solution of phase conjugation of pulses in photorefractive media by four-wave mixing, solving the linearized Kukhtarev equations.1 The procedure avoids analytical reflectivity and its complexity as a required intermediate step by directly producing final data, in either the stable and unstable regimen.1 We compare our ...
L. A. Diaz-Torres +2 more
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