Results 211 to 220 of about 353,613 (251)

Optimal Shapes of Fully Embedded Channels for Conjugate Cooling

Advanced Energy Systems, 1999
Abstract 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
openaire   +1 more source

Macrocyclic Aromaticity of Porphyrin Units in Fully Conjugated Oligoporphyrins

The Journal of Physical Chemistry A, 2012
Individual 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, 2002
The 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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Linear fully conjugated meso-aryl pentapyrrins

Tetrahedron Letters, 2009
A meso-2,6-dichlorophenyl pentapyrrin was prepared using a modified method for dipyrrane synthesis followed by simple DDQ oxidation. The fully conjugated structures formed via redox inter-conversions were studied using crystallographic as well as observed and calculated spectral data.
Shin, JY, Hepperle, SS, Dolphin, D
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Synthesis and characterization of fully conjugated porphyrin tapes

Israel Journal of Chemistry, 2005
Abstractmeso‐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, Naoki Aratani, Atsuhiro Osuka   +2 more
openaire   +1 more source

Synthesis and Properties of a New Class of Fully Conjugated Azahexacene Analogues

Angewandte Chemie, 2014
AbstractAcenes 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, Sabin-Lucian, Suraru, David, Bialas, Matthias, Müller, Frank, Würthner   +4 more
openaire   +2 more sources

Fully automated synthesis of peptide-oligonucleotide conjugates

2002
An efficient synthetic strategy for the on-line preparation of oligonucleotide-peptide conjugates is here presented.
ROMANELLI, ALESSANDRA, DE NAPOLI, LORENZO, Messere A., MONTESARCHIO, DANIELA, PICCIALLI, GENNARO, ZACCARO, LAURA, PEDONE, CARLO, ROSSI, FILOMENA, BENEDETTI, ETTORE   +8 more
openaire   +3 more sources

Fully numerical solution of photorefractive phase conjugation of pulses

Optical Society of America Annual Meeting, 1991
We 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, J. J. Sanchez-Mondragon, G. E. Torres-Cisneros   +2 more
openaire   +1 more source

Two Regioisomeric Ladder Polymers with a Fully Conjugated or Cross-Conjugated Polyacene-Type Skeleton

Macromolecules
Two regioisomeric ladder polymers with a fully conjugated or cross-conjugated polyacene-type skeleton have been made by combining transition-metal-catalyzed aryl–aryl coupling and dehydrating post-polymerization cyclization. The regioisomeric variation results from a simple change in the monomers’ substitution pattern and gives rise to a fully ...
Mischa Bonn, Ullrich Scherf, Silvio Osella   +2 more
exaly   +3 more sources

Synthesis and polymerisation of fully conjugated polyether-substituted terthiophenes

Synthetic Metals, 2003
A 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
openaire   +1 more source