18708-44-6

Upstream product

• 80-10-4 diphenylsilyl dichloride 
• 106-38-7 para-bromotoluene 
• 2417-95-0 p-tolyllithium 
• 18708-42-4 bis(4-methylphenyl)diphenylsilane 
• 18708-43-5 4,4'-(diphenylsilanediyl)dibenzoic acid 

Downstream Products

• 119897-05-1 C₅₀H₂₈O₈Si 
• 119898-97-4 (4-{[4-(Acenaphthene-5-carbonyl)-phenyl]-diphenyl-silanyl}-phenyl)-acenaphthen-5-yl-methanone 
• 1345456-85-0 diphenylbis(4-(5-phenyl-1,3,4-oxadiazol-2-yl)phenyl)silane 
• 25530-66-9 C₂₆H₂₄N₄O₂Si 

Relevant academic research and scientific papers

Radical-forming polyamides for self-decontamination coatings

Design and synthesis of thermally stable polyamides with improved solubility based on an asymmetrical aromatic diamine containing phenoxy substituted benzophenone segment was the main objective of this work. These polymers were easily soluble at room temperature in polar aprotic solvents and even in less polar solvents, such as tetrahydrofuran. The polymers showed excellent thermal stability, up to 385°C, and exhibited glass transition in the range of 225-256°C. All the polymers emitted an intense blue light upon irradiation with UV light, due to the emission from the benzophenone chromophore. The free-standing films having the thickness in the range of tens of micrometers obtained from these polymers were flexible, tough, and maintained their integrity after repeated bendings. To investigate the radical-forming ability of the polyamides for decomposing surrounding harmful materials, degradation of methylene blue by the polymer films was studied.

1,3,4-oxadiazole containing silanes as novel hosts for blue phosphorescent organic light emitting diodes

Five rigid oxadiazole (OXD) containing silanes, denoted 1-5, have been developed with high morphological stability. Disruption of the π-aromatic conjugation by introduction of Si atoms leads to a large band gap and high triplet energy. Among the OXDs we s

Blue fluorescent polyamides containing naphthalene and oxadiazole rings

New polyamides containing 1,3,4-oxadiazole and naphthalene rings were prepared by low-temperature solution polycondensation reaction of a new diamine containing preformed oxadiazole ring with various aromatic diacid chlorides. Elemental analysis, mass, infrared, and nuclear magnetic resonance spectroscopy were used to confirm the structure of the monomers and corresponding polymers. The thermal stability and glass transition temperatures of these poly(oxadiazole-amide)s were measured and compared with those of related polymers. Their good solubility allows them to be processed in very thin films with smooth surfaces, without pinholes or cracks, when studied by atomic force microscopy. Upon irradiation with UV light the polymers showed photoluminescence maxima in the blue spectral range, both in solution and in solid state. Cyclic voltammetry (CV) was performed in order to obtain information about the electrochemical stability and reversibility of the redox processes of these polyamides. The highest occupied molecular orbital and the lowest unoccupied molecular orbital energy levels, and electrochemical and optical band gap values were calculated by using the results of CV and UV/vis, respectively, showing very good electron and hole injection and transport characteristics. These properties make the present polymers suitable for application in electroluminescent devices.

Aromatic polyoxadiazoles with silicon in the main chain

This article presents a review on aromatic polymers which contain 1,3,4-oxadiazole rings and diphenylsilylene units in the main chain. These polymers have been synthesized by polycondensation reactions of certain monomers containing silicon, such as dicarboxylic acids, diacid chlorides, diesters or dihydrazides, with conventional aromatic dihydrazides or with aromatic diamines containing preformed oxadiazole rings. The properties of these polymers, such as solubility, film forming ability, thermal stability, electrochemical behavior and photoluminescence properties, and their potential applications are discussed.

Chelate polymers. VI. New copolymers of the some siloxane containing bis(2,4-dihydroxybenzaldehyd-imine)Me2+ with bis(p-carboxyphenyl)diphenylsilane

New high complex polymeric structures containing metal chelate sequences alternating, through esteric bridges, with silane units were obtained. The azomethine of 2,4-dihydroxybenzaldehyde with 1,3-bis(aminopropyl)tetramethyldisiloxane has been synthesized