Category: 2909-77-5

Focsaneanu, Kathy-Sarah published the artcilePotential analytical applications of differential fluorescence quenching: Pyrene monomer and excimer emissions as sensors for electron deficient molecules, Safety of 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Photochemical & Photobiological Sciences (2005), 4(10), 817-821, database is CAplus and MEDLINE.

Quenching of the monomer and excimer emissions from pyrene allows excellent discrimination in the detection of electron-deficient mols.; this characteristic could be used to detect explosives and for rapid screening of complex samples suspected of containing explosives. The method responds to electron deficient mols. other than nitro compounds (e.g., 1,4-dicyanobenzene), giving some false positives; in this case, however, the method is unlikely to lead to false negatives, a desirable characteristic in security-related applications.

Photochemical & Photobiological Sciences published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Safety of 2,6-Diisopropyl-N,N-dimethylaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Saigusa, K. published the artcileInfluence of carboxylic acid content and polymerization catalyst on hydrolytic degradation behavior of Poly(glycolic acid) fibers, Recommanded Product: 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Polymer Degradation and Stability (2020), 109054, database is CAplus.

Poly(glycolic acid) (PGA) is an aliphatic polyester with the simplest chem. structure. Since PGA is susceptible to hydrolysis, various researchers studied the factors affecting the hydrolytic degradation behavior of PGA. The factors include the higher-order structure, pH, ionic electrolyte etc. In this study, to clarify the mechanism for the hydrolysis of PGA fibers, effect of the carboxylic acid content on the hydrolytic degradation behavior was investigated through the quant. evaluation of the amounts of the carboxylic acid end group and the PGA monomer (glycolide, GL) in the fibers. Evaluation of the hydrolysis of PGA fibers through the analyses of the mol. weight retention and tensile strength retention after immersing in the phosphate buffer solution at 37¡ãC revealed that the hydrolysis is governed by the carboxylic acid content in the PGA fibers. It was also found that the amount of GL generated during the melt spinning process is affected by the amount and type of polymerization catalyst. In addition, the exptl. results of fundamental anal. suggested that the polymerization catalyst also decomposes the GL into glycolic acid or glycolic acid dimers to generate carboxylic acid, and the rate of decomposition varies depending on the type and amount of catalyst. Based on these results, it was concluded that there is an indirect effect of the type and amount of polymerizing catalyst on the rate of hydrolysis of PGA fibers.

Polymer Degradation and Stability published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Recommanded Product: 2,6-Diisopropyl-N,N-dimethylaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Belfield, Kevin D. published the artcileNear-IR Two-Photon Photoinitiated Polymerization Using a Fluorone/Amine Initiating System, Name: 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Journal of the American Chemical Society (2000), 122(6), 1217-1218, database is CAplus.

A controlled 2-photon induced photopolymerization at 775 nm, employing the visible light-absorbing dye H-Nu 470 in the presence of an arylamine and (meth)acrylate monomers is described. Although the efficiency of initiation was not determined quant., qual. it was observed that polymerization occurred rapidly, even at higher scan rates and lower power.

Journal of the American Chemical Society published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Name: 2,6-Diisopropyl-N,N-dimethylaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Belfield, Kevin D. published the artcileMicrofabrication via two-photon photoinitiated polymerization, Name: 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Polymeric Materials Science and Engineering (1999), 79-80, database is CAplus.

Controlled two-photon induced photopolymn, using both com. monomers (e.g., acrylate, methacrylate) and initiator systems, was demonstrated. Though the efficiency of initiation was not determined quant., qual. the polymerization occurred rapidly, even at higher scanning rates and lower power. This work paves the way for three-dimensional microfabrication of microelectromech. systems and lithog. using readily available materials.

Polymeric Materials Science and Engineering published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Name: 2,6-Diisopropyl-N,N-dimethylaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Blondiaux, Enguerrand published the artcileCarbon dioxide reduction to methylamines under metal-free conditions, COA of Formula: C14H23N, the publication is Angewandte Chemie, International Edition (2014), 53(45), 12186-12190, database is CAplus and MEDLINE.

The metal-free catalysts are reported for the methylation of amines with carbon dioxide. Proazaphosphatrane superbases prove to be highly active catalysts in the reductive functionalization of CO₂, in the presence of hydroboranes. The new methodol. enables the methylation of N-H bonds in a wide variety of amines, including secondary amines, with increased chemoselectivity.

Angewandte Chemie, International Edition published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, COA of Formula: C14H23N.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Paczkowski, Jerzy published the artcileGeneralization of the Kinetic Scheme for Photoinduced Polymerization via an Intermolecular Electron Transfer Process. 2. Application of the Marcus Theory, Formula: C14H23N, the publication is Macromolecules (1996), 29(15), 5057-5064, database is CAplus.

A theor. description of the kinetics of free-radical dye-initiated photopolymerization via an intermol. electron transfer process is given. Anal. considers the properties of organic redox pair forming initiating radicals. An application of the Marcus theory gives the kinetic scheme, which considers both the thermodn. and kinetic aspects of the electron transfer process. The anal. shows that both the reactivity of free radicals resulting from the photoinduced intermol. electron transfer (PET) process and the rate of the PET process can limit the rate of the polymerization initiation process. The theory is supported by exptl. data. Several organic redox pairs forming free radicals were tested. As the electron-accepting mols., xanthene dyes and camphorquinone were tested. As the electron donors, tertiary aromatic amines (TAAs) and N-phenylglycines (NPGs) were used. Several important conclusions are drawn from the theor. and exptl. data. For the process with the rate of PET much lower than the rate of the diffusion-controlled process, the Marcus theory can be used for analyzing or predicting the ability of organic redox systems for light-induced free radical polymerization For the process controlled by the diffusion, the reactivity of radicals formed as a result of the PET process limits the rate of the polymerization initiation. This relationship can also be presented as a function of thermodn. driving forces of the photoredox reaction (-¦¤G¡ã). The rate of photoinitiated polymerization can be described as a function of thermodn. driving forces of the photoredox reaction (-¦¤G¡ã; described by the Rehm-Weller equation) of the organic donor-acceptor pair. For the photoinduced electron transfer occurring much slower than diffusion-controlled processes, the relationship between the rate of polymerization and -¦¤G¡ã presents a classical Marcus parabolic relationship. For PET controlled by diffusion, the relationship between the rate of polymerization and -¦¤G¡ã is dependent on the reactivity of free radicals resulting from the PET process and gives a linear relationship indicating the inverted region-like kinetic behavior.

Macromolecules published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Formula: C14H23N.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Howell, Barbara F. published the artcileRadiation cured, environmentally compliant, pigmented coatings, Synthetic Route of 2909-77-5, the publication is Proceedings – Electrochemical Society (1997), 29-39, database is CAplus.

Pigmented epoxy acrylate coatings were developed which could be successfully cured using a xenon or mercury lamp. Coatings applied to grit blasted steel panels passed crosshatch adhesion, impact, balanced beam scrape adhesion, and 500-h 49¡ã salt fog tests. A pigment formulation suitable for radiation curing was found. In addition, visible light-sensitive, photobleaching photoinitiators were tested, and it was found that the pigmented coating formulation could be successfully cured with a metal halide electrodeless bulb, which emits light in the short visible wavelength range, as well as with a sufficiently intense tungsten halogen lamp. Because of the photobleaching, the coating did not yellow, and problems with exposure to UV radiation were minimized with visible radiation bulbs.

Proceedings – Electrochemical Society published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Synthetic Route of 2909-77-5.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Bi, Yubai published the artcileA Visible Light Initiating System for Free Radical Promoted Cationic Polymerization, Application In Synthesis of 2909-77-5, the publication is Macromolecules (1994), 27(14), 3683-93, database is CAplus.

A visible light initiator system (containing a xanthene dye, an aromatic amine, and a diaryliodonium salt) for the photoinduced cationic polymerization of epoxides is reported. The polymerization in the radicals generated from the visible-light absorber starts a chain process which, after oxidation of the formed radicals, produces a cationic chain initiating carbocation. The system can efficiently photoinitiate the polymerization of certain cyclic ethers at any wavelength of the visible spectrum depending on the dye’s absorption spectrum and its oxidation/reduction potentials. Epoxides do not polymerize in the absence of any of the 3 components or in the absence of light. Aromatic amines of low basicity containing ¦Á-Hs are the preferred coinitiators for the polymerization of cyclohexene oxide (I). Studies on photochem. reactions between each 2 of the 3 components demonstrate that both oxidative bleaching of the dye by the diaryliodonium salt and reductive bleaching by the aromatic amine contribute to ¦Á-amino radical formation. The radical formed can be easily oxidized into an ¦Á-aminocarbocation by an onium salt of proper potential. Characterization of the polymer formed from I indicates that all the xanthene dye and appreciable amounts of the aromatic amine are incorporated in the polymer. It is believed that the ¦Á-aminocarbocation initiates the ring opening cationic polymerization Dye mols. are incorporated into the polymer in chain-terminating processes.

Macromolecules published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C14H23N, Application In Synthesis of 2909-77-5.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Torres-Filho, A. published the artcileMechanical Properties of Acrylate Networks Formed by Visible Laser-Induced Polymerization. 2. Control of the Mechanical Properties, Category: catalysis-chemistry, the publication is Chemistry of Materials (1995), 7(4), 744-53, database is CAplus.

The mech. properties of some acrylate networks formed by visible laser-induced polymerization were studied as a function of the initial mol. composition of the reacting mixture The study included, besides some changes in the monomer composition, the influence of the acidity of the medium when ionizable dyes were used as photoinitiators. It was also shown that the mech. strength of the network polymers can be significantly improved by the addition of inorganic fillers which have been surface treated with silane coupling agents containing polymerizable groups or by adding to the multifunctional acrylate monomers a solution containing a stronger performed polymer. It was further observed that some of the phys. properties of the parts formed may be anisotropic depending on the direction of laser scanning for photopolymer formation. The work also describes different attempts to obtain an elastomeric material by copolymerizing a flexible acrylated oligomer with the networking monomers.

Chemistry of Materials published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C6H8O6, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Torres-Filho, a. published the artcileMechanical properties of acrylate networks formed by visible laser-induced polymerization. I. Dependence on photopolymerization parameters, Recommanded Product: 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Journal of Applied Polymer Science (1994), 51(5), 931-7, database is CAplus.

The mech. properties of network mol. systems, prepared through visible (Ar⁺) laser-induced polymerization of multifunctional acrylates, were studied as a function of some of the photopolymerization parameters. Acrylate monomers used were 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, dipentaerythritol pentaacrylate, and polyethylene glycol diacrylate. The properties investigated were the Young’s modulus of elasticity and the stress-at-break, both derived from the stress vs. strain test of dogbone-shaped photopolymerized samples. The parameters studied included the fluorone dye and co-initiator concentrations, and the laser power. The authors also compared the mech. properties of samples made using different types of fluorone dyes and using two different amines as co-initiator. Better polymers are formed by dyes with lower fluorescence quantum yield. The three photopolymerization parameters modify the mech. properties in a very similar way: they initially tend to increase both the Young’s modulus and the stress-at-break but have a deleterious effect on the material strength if used in excess. N-phenylglycine used as a co-initiator formed stronger polymers (higher Young’s modulus) than N,N-dimethyl-2,6-diisopropylaniline. The authors discussed possible mol. mechanisms for such observations.

Journal of Applied Polymer Science published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C15H24O2, Recommanded Product: 2,6-Diisopropyl-N,N-dimethylaniline.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia