808142-24-7

Usage

Chemical structure

1,1'-(9,9-dimethyl-9H-xanthene-4,5-diyl)bis-1,1-diphenylphosphine oxide

Common use

Photoinitiator in polymerization processes

Applications

Production of coatings, inks, and adhesives

Function

Acts as a sensitizer for initiating the polymerization of various monomers when exposed to light

UV-curable systems

Particularly effective in these systems

Combination use

Often used in combination with other photoinitiators to achieve desired curing properties

Additional research

Studied for potential use in photodynamic therapy for cancer treatment

Phototoxic properties

Exhibits these properties, which contribute to its potential use in cancer treatment

Upstream product

• 19814-75-6 9,9-dimethylxanthene 
• 1079-66-9 chloro-diphenylphosphine 
• 161265-03-8 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene 

Downstream Products

• 161265-03-8 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene 

Relevant academic research and scientific papers

Polymerization of conjugated dienes and olefins promoted by cobalt complexes supported by phosphine oxide ligands

Four cobalt complexes supported by phosphine oxide (P=O) donors (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine oxide) cobalt dichloride (Co1), (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine oxide) cobalt bromide (Co2), N, N'-(pyridine-

Novel phosphine oxide bidentate neutral manganese complex as well as preparation method and application thereof

The invention provides a novel phosphine oxide bidentate neutral manganese complex as well as a preparation method and application thereof. A light-emitting manganese complex is formed through the action of a bidentate phosphine oxide bond and manganese metal, and the ligand can change two benzene rings on P into cyclohexyl to form another novel structure; the structures can be used for carrying out optical regulation and control on the metal manganese complex by adjusting a ligand field and a ligand proportion; because the metal manganese has the advantages of low price, low cost, simple synthesis and the like, the neutral manganese complex has wide application and can be applied to the fields of anti-counterfeiting printing, illumination display and the like.

One-Pot Tandem Michael Addition/Enantioselective Conia-Ene Cyclization Mediated by Chiral Iron(III)/Silver(I) Cooperative Catalysis

The first one-pot tandem Michael addition/enantioselective Conia-ene cyclization of N-protected prop-2-yn-1-amines with 2-methylene-3-oxoalkanoates promoted by chiral iron(III)/silver(I) cooperative catalysts has been developed. Alkyl 4-methylenepyrrolidine-3-acyl-3-carboxylates, which can be transformed into β-proline derivatives, are obtained in high yield with high enantioselectivity.

Chemoselective Reduction of Phosphine Oxides by 1,3-Diphenyl-Disiloxane

Reduction of phosphine oxides to the corresponding phosphines represents the most straightforward method to prepare these valuable reagents. However, existing methods to reduce phosphine oxides suffer from inadequate chemoselectivity due to the strength of the P=O bond and/or poor atom economy. Herein, we report the discovery of the most powerful chemoselective reductant for this transformation to date, 1,3-diphenyl-disiloxane (DPDS). Additive-free DPDS selectively reduces both secondary and tertiary phosphine oxides with retention of configuration even in the presence of aldehyde, nitro, ester, α,β-unsaturated carbonyls, azocarboxylates, and cyano functional groups. Arrhenius analysis indicates that the activation barrier for reduction by DPDS is significantly lower than any previously calculated silane reduction system. Inclusion of a catalytic Br?nsted acid further reduced the activation barrier and led to the first silane-mediated reduction of acyclic phosphine oxides at room temperature.

Tuning of the excitation wavelength in Eu3+-aminophenyl based polyfluorinated β-diketonate complexes: a red-emitting Eu3+-complex encapsulated in a silica/polymer hybrid material excited by blue light

We describe herein the synthesis, characterization and photophysical properties of a series of europium complexes based on three aminophenyl based polyfluorinated β-diketonates, namely, 1-(4-aminophenyl)-4,4,5,5,5-pentafluoro-3-hydroxypent-2-en-1-one, 1-(

Photoluminescent tetrazolate-based Eu(III) complexes: An outstanding impact of aromatic phosphine oxide co-ligands on the photoluminescence quantum yields

New ternary Eu(III) 5-(2-pyridyl-1-oxide)tetrazolate complexes with phosphine oxide co-ligands have been synthesized and characterized by elemental analysis, and IR and 1H NMR spectroscopic techniques. The analytical data revealed that these complexes are

RARE-EARTH COMPLEX AND USES THEREOF

The rare-earth complex of the present invention has high luminous efficiency, since it has a structure represented by the following general formula (I):

Isoprene hydroamination catalyzed by palladium xantphos complexes

Pd(II) Xantphos or Xantphos chalcogenide complexes with general folmula [PdCl2(X∩X)] (where X = P, O, S or Se) were synthesized by the addition of corresponding ligands to [PdCl2(COD)] (COD = 1,5-cyclooctadiene). Prepared Complexes [

Xanthene-based phosphine oxide host with the planar multi-insulating structure for efficient electrophosphorescence

A phosphine oxide (PO) host containing planar xanthene (XantPO) was chosen to investigate the influence of the structure of chromophores on the properties of the host. Owing to the multi-insulating linkages, the planar structure of XantPO also realizes high first triplet excited level (T1) of 2.92 eV, and supports excellent morphological and thermal stability with the high temperature of glass transition (Tg, 135°C) and temperature of decomposition (Td, 369°C). On the basis of theoretical simulation and electrochemical analysis and bright and efficient green and blue phosphorescent organic light-emitting diodes (PHOLEDs) of XantPO, it indicated that the configuration of chromophores in hosts can remarkably influence the device performance even if their optical properties were very approximate.

Remarkable luminescence properties of lanthanide complexes with asymmetric dodecahedron structures

The distorted coordination structures and luminescence properties of novel lanthanide complexes with oxo-linked bidentate phosphane oxide ligands-4,5-bis(diphenylphosphoryl)-9,9-dimethylxanthene (xantpo), 4,5-bis(di-tert-butylphosphoryl)-9,9-dimethylxanth