Results 161 to 170 of about 157,779 (296)

Oxygen plasma resistant phosphine oxide containing imide/arylene copolymers [PDF]

A series of oxygen plasma resistant imide/arylene ether copolymers were prepared by reacting anhydride-terminated poly(amide acids) and amine-terminated polyarylene ethers containing phosphine oxide units. Inherent viscosities for these copolymers ranged
Jensen, Brian J.
core   +1 more source

Dual Circularly Polarized Luminescence from Chiral Boron‐Embedded Polycyclic Aromatic Hydrocarbons

Angewandte Chemie, EarlyView.
Boron‐embedded polycyclic aromatic hydrocarbons featuring an asymmetric boron center coordinated by a proximal P═O group were synthesized. Anthracene‐fused boracyclic derivatives show dual circularly polarized luminescence (CPL) arising from excited‐state P═O⋯B dissociation, which converts point chirality into C−B axial chirality.
Tatsuya Mori, Yoshiharu Sano, Tomoyuki Ikai, Yuuya Kawasaki, Katsuhiko Tomooka, Takahiro Sasamori, Shigehiro Yamaguchi   +6 more
wiley   +2 more sources

Recovery of Spectra of Phosphine in Venus' Clouds [PDF]

, 2021
J. S. Greaves, A. M. S. Richards, William Bains, Paul B. Rimmer, D. L. Clements, Sara Seager, Janusz J. Petkowski, Clara Sousa‐Silva, Sukrit Ranjan, H. J. Fraser   +9 more
openalex   +1 more source

Temperature‐Responsive Near‐Infrared Emission Enabled by Reversible π‐Umpolung with an Alkenyl‐Strapped Diarylboryl Unit

Angewandte Chemie, EarlyView.
Coordination of a Lewis base switches an electron‐accepting tricoordinate boron center into an electron‐donating tetracoordinate one. An alkenyl‐strapped diphenylthienylboryl π‐system undergoes phosphine‐induced reversible π‐umpolung, where transformation from an acceptor–acceptor–acceptor framework to a donor–acceptor–donor system gives rise to ...
Satoru Kitamura, Mika Sakai, Shigehiro Yamaguchi   +2 more
wiley   +2 more sources

Ru₄(CO)₈(μ-OOCAd)₄(PPh₃)₂: Phosphine Derivative of an Electron-Deficient Linear Tetraruthenium Cluster

, 2011
Suat Ping Oh, Bo Yang Chor, Wai Yip Fan, Yongxin Li, Weng Kee Leong   +4 more
openalex   +2 more sources

Recent Advances in Asymmetric Synthesis of P-Chiral Phosphine Oxides [PDF]

, 2023
Cheng Luo, Yanli Yin, Zhiyong Jiang
openalex   +1 more source

Boosting the Nucleophilicity of the Diphenylphosphide Anion with Crown Ether Supported Heavy Alkali Metals to Facilitate Highly Efficient Catalytic Alkene Isomerisation

Angewandte Chemie, EarlyView.
Here, we report a breakthrough study in catalytic alkene isomerisation using crown ether‐supported alkali metal phosphides in which the activity increases sequentially and significantly as Group One is descended with Cs(18‐crown‐6)PPh2 (1Cs) performing best.
Felix Krämer, Thomas M. Horsley Downie, Robert E. Mulvey   +2 more
wiley   +2 more sources

Numerical investigation on phosphine flow during fumigation of wheat in a Chinese horizontal warehouse

, 2019
Xi Chen, Guixiang Chen, Longfei Yue, Deqian Zheng, Haitao Wang, Minmin Jiang   +5 more
openalex   +1 more source

Leveraging Diamines to Unlock the Mn‐MACHO Catalyst in the Reduction of CO2 to Methanol

Angewandte Chemie, EarlyView.
CO2 hydrogenation to methanol using a Mn–MACHO catalyst was achieved without Lewis acid promoters, delivering TONs up to 45.2. Diamines, by driving a highly exergonic double amidation reaction, divert formate resting states toward the active catalyst. The correlation between ΔGamidation and methanol productivity enables the rational design of the amine
Mohamed E. A. Safy, Raquel J. Rama, Niklas F. Both, David Balcells, Kathrin Junge, Matthias Beller, Ainara Nova   +6 more
wiley   +2 more sources

Sustained effective use of phosphine in stored product protection in India: Role of UPL Limited

, 2018
Ujjwal Kumar
openalex   +2 more sources