Results 161 to 170 of about 51,028 (331)

Counteranion-induced structural isomerization of phosphine-protected PdAu8 and PtAu8 clusters [PDF]

open access: gold, 2023
Yu Fujiki   +9 more
openalex   +1 more source

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

open access: yesAngewandte 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   +6 more
wiley   +2 more sources

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

open access: yesAngewandte 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   +2 more
wiley   +2 more sources

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

open access: yesAngewandte 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   +2 more
wiley   +2 more sources

Poisoning with Phosphine Gas Result the Rice Tablet, Report of Two Cases

open access: yesپزشکی بالینی ابن سینا, 1996
Rice tablets which are also with trade names of “Celphos” and / or “Quick phos”, will release dangerous gas of phosphine (PH3), after ingestion and contact with gasterointestinal and even environmental humidity.
Abdolkarim Pezhomand   +2 more
doaj  

Singlet Fission in Push–Pull Para‐Azaquinodimethane Films under the Gaze of Time Resolved Optical and Magnetic Spectroscopy

open access: yesAngewandte Chemie, EarlyView.
New push–pull para‐azaquinodimethane derivatives were synthetized through a sustainable protocol. Transient absorption results showed ultrafast intermolecular singlet fission (SF) in film and demonstrated for AsOMe higher triplet energy than for literature SF materials, with intriguing perspectives for photovoltaics toward silicon matched SF.
Martina Alebardi   +11 more
wiley   +1 more source

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