61102-69-0

Upstream product

• 698-00-0 2-bromo-N,N-dimethylaniline 
• 1079-66-9 chloro-diphenylphosphine 
• 107531-88-4 Dimethyl-[2-(2,2,3,4-tetraphenyl-2λ⁵-[1,2]oxaphosphetan-2-yl)-phenyl]-amine 
• 4358-50-3 N,N-dimethyl-2-(diphenylphosphino)aniline 
• 107531-90-8 benzylidene(2-N,N-dimethylaminophenyl)diphenylphosphorane 

Relevant academic research and scientific papers

Functionalized triphenylphosphine oxide-based manganese(ii) complexes for luminescent printing

Three novel neutral manganese(ii) complexes(TPhPONMe2)2MnBr2,(TPhPOOMe)2MnBr2, and(TPhPOCF3)2MnBr2have been designed and synthesized based on a functionalized Ph3PO ligand. These structures are clarified by single crystal X-ray diffraction analysis, which reveals that they crystallize in centrosymmetric space groups and feature an isolated mononuclear structure with Mn2+in a tetrahedral environment. The photoluminescence spectra and emission lifetime decay curves of three manganese(ii) complexes show distinct green emission (λem= 498-512 nm) and phosphorescence lifetime (τ= 362.0-663.0 μs). The results of DFT calculations indicate that the energy levels of(TPhPONMe2)2MnBr2and(TPhPOOMe)2MnBr2are higher than that of(TPhPOCF3)2MnBr2due to the electron-donating effect of the NMe2or OMe group, which explains the blue-shift of the emission wavelength and the increase of emission lifetime. Furthermore, the prepared neutral manganese(ii) complexes can be used for high-resolution luminescent printing.

Novel neutral monodentate chelated manganese complex as well as preparation method and application thereof

The invention discloses a novel neutral monodentate chelated manganese complex. Different electron donating and withdrawing substituents, such as N (Me) 2, OMe, CF3, OCF3, Cl, F, CN and Br, are introduced to a triphenylphosphine oxide ligand, so that the emission energy level and the luminescence life of the manganese complex can be easily adjusted, and the luminescence property of a material is further changed; and besides, information storage and protection can be realized by utilizing the neutral manganese complex.

APPARENT ABSENCE OF REVERSAL OF OXAPHOSPHETANE FORMATION IN SOME WITTIG REACTIONS

Reversal of oxaphosphetane formation in the reaction of benzaldehyde with benzylidene(2-N,N-dimethylaminophenyl)diphenylphosphorane (1) and benzylidene(4-N,N-dimethylaminophenyl)diphenylphosphorane (2), respectively, is found not to occur in tetrahydrofuran solution.The reason for this is that the rates of dissociation of the oxaphosphetanes to stilbenes and the corresponding triarylphosphine oxide are faster than reversal to the reagents.