Results 81 to 90 of about 4,846,198 (334)
Angewandte Chemie, EarlyView.The synthesis of electron‐deficient azulene‐embedded polycyclic aromatic hydrocarbons has been achieved by the rhodium‐catalyzed intermolecular arylative [2 + 2 + 1] annulation of teraryl diynes with dialkyl acetylenedicarboxylates followed by oxidation at room temperature.
Yoshinobu Kamiya +9 more
wiley +2 more sources
Woven, In‐Air, Textile Actuators by Conjugated Polymers and Solid‐State Electrolyte Tape Yarns
Advanced Intelligent Systems, EarlyView.Herein, the concept of fabric actuators with trilayer tape yarns is reported. The tape yarns consist of conjugated polymer layers and ionogel, as an ion reservoir, enabling actuation in‐air. Using textile techniques to create actuators offer many advantages, such as parallel assembly for increased force output, conductive yarns for electrical control ...
Carin Backe +5 more
wiley +1 more source
Stepwise Acetylene Insertion and Ammonia Activation at a Digallene and Diindene
Angewandte Chemie, EarlyView.The stepwise insertion of acetylene into the E═E bonds of digallenes and diindenes is reported. This leads to the selective formation of four‐ and six‐membered rings with 2π E2C2 and 4π E2C4 cores. The six‐membered cyclohexadiene analogues are Lewis‐acidic and can form stable, isolable adducts with ammonia, which—upon heating—undergo ammonolysis ...
Álvaro García‐Romero +2 more
wiley +2 more sources
Zhejiang Daxue xuebao. Lixue ban, 2017 Recently, CAO et al introduced a generalized shift-splitting preconditioner for saddle point problems with nonsymmetric positive definite (1, 1)-block.
ZHANGLitao(张理涛) +2 more
doaj +1 more source
Tuning Antiaromaticity Through Meso‐Substituent Orientation in Core‐Modified Isophlorins
Asian Journal of Organic Chemistry, EarlyView.The antiaromaticity of dithiadioxaisophlorins is controlled by the steric bulkiness of meso‐substituents through their tilt angle relative to the macrocycle. Bulkier substituents maintain larger angles, preserving stronger antiaromaticity, while smaller groups facilitate π‐conjugation with the macrocycle, diminishing antiaromaticity.
Maika Isoda +3 more
wiley +1 more source
Angewandte Chemie, EarlyView.Single‐crystal X‐ray diffraction analysis revealed a reduction‐induced ring cleavage with subsequent hydrogenation of a bilayer spironanographene upon treatment with alkali metals. Density Functional Theory (DFT) calculations suggested localized spin density on the C‐atom at the central spirocycle upon one‐fold reduction, facilitating a site‐specific ...
Juan Lión‐Villar +7 more
wiley +2 more sources
An accelerated minimax algorithm for convex-concave saddle point problems with nonsmooth coupling function. [PDF]
Comput Optim Appl, 2023 Boţ RI, Csetnek ER, Sedlmayer M.
europepmc +1 more source
Thiophene Containing Polycyclic Aromatic Hydrocarbon Monkey Saddles
Asian Journal of Organic Chemistry, EarlyView.A series of thiophene containing polycyclic aromatic hydrocarbon monkey saddles is presented. The core structure was successfully functionalized to tune the optoelectronic properties and furthermore path the way to use these monkey saddles as building block, for example for oligomeric structures as well as organic cage compounds.
Tobias Kirschbaum +6 more
wiley +1 more source
Saddle point theorems on generalized convex spaces
Journal of Inequalities and Applications, 2000 A sharpened extension of Komiya's saddle point theorem is obtained for generalized convex spaces. Moreover, we show that convexity of the involved sets in his theorem can be replaced by acyclicity, and continuity of the involved functions by lower and ...
Park Sehie, Kim In-sook
doaj
Field-Theoretic Simulations for Block Copolymer Melts Using the Partial Saddle-Point Approximation. [PDF]
Polymers (Basel), 2021 Matsen MW, Beardsley TM.
europepmc +1 more source