Category: 10287-53-3

Song, Qiuyan published the artcileNondiffusion-Controlled Photoelectron Transfer Induced by Host-Guest Complexes to Initiate Cationic Photopolymerization, Product Details of C11H15NO2, the publication is Macromolecules (Washington, DC, United States) (2021), 54(18), 8314-8320, database is CAplus.

Two novel supramol. photoinitiators (supra-photoinitiators) based on the host-guest complexation of macrocycles (pillar[6]arene, P6; prism[5]arene, NP5) and diphenyl-iodonium salt (Iod) were fabricated. Under light irradiation, macrocycle P6 or NP5 could donate electrons to the guest mol. Iod, which generated highly active free radicals and cationic fragments to achieve efficient polymerization Compared to a com. activator, the electron transfer between macrocycles and Iod were under nondiffusion control, endowing a much higher photopolymerization rate and epoxy resin final conversion. In addition, the host-guest complexation of NP5 extended the initiating wavelength of Iod from ultrashort UV to near-UV, which could better match the environment-friendly LED light source. It is anticipated that a supra-photoinitiator may open a new route for designing novel photoinitiators with high performance.

Macromolecules (Washington, DC, United States) published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C9H7NO4, Product Details of C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Shaohui published the artcileDesign of photoinitiating systems based on the chalcone-anthracene scaffold for LED cationic photopolymerization and application in 3D printing, Quality Control of 10287-53-3, the publication is European Polymer Journal (2021), 110300, database is CAplus.

In this study, light-emitting diodes (LEDs) used as secure, low-cost and possessing long emission wavelengths irradiation sources were applied in photopolymerization Seven novel anthracene derivatives were proposed and evaluated in photosensitive systems. Three of them were never synthesized before and the other derivatives were evaluated in other fields. Due to the in-silico design of mol. structure by mol. modeling, the proposed chalcone-anthracenes showed a broad absorption band in the visible region with favorable molar extinction coefficients Photoinitiation abilities of the different photoinitiating systems were examined by the Real-Time Fourier Transformed IR Spectroscopy. The free radical polymerization of acrylates under LED@405 nm irradiation in laminate was evaluated and high final function conversions (FCs) were obtained in the presence of three-component photoinitiating systems based on chalcone-anthracenes/iodonium salt/amine. Meanwhile, the chalcone-anthracene derivatives exhibited high photoinitiation abilities in cationic photopolymerization of epoxides in combination with an iodonium salt under LED@405 nm irradiation The final function conversions of epoxy using some anthracene/iodonium salt systems were even higher than the well-established dibutoxyanthracene (DBA)/iodonium salt benchmark system. In addition, due to the good light absorption properties, the cationic photopolymerization also was carried out in the presence of the chalcone-anthracene/iodonium salt systems under LED@470 nm or laser diode@447 nm irradiation (not possible to do with the reference DBA systems). Markedly, these derivatives were also able to sensitize sulfonium salts. The photochem. reactivity of anthracene derivatives was investigated through the steady state photolysis and fluorescence quenching experiments Furthermore, the proposed interaction mechanisms of chalcone-anthracene derivatives and additives (iodonium salt and amine) were discussed using the free energy changes of electron transfer reactions. Interestingly, the cationic photopolymerization of A5/iodonium salt system was applied in 3D printing and the 3D patterns showed a good spatial resolution

European Polymer Journal published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Quality Control of 10287-53-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Hong published the artcileRhenium(I) N-Heterocyclic Carbene Complexes in Photoinitiating Systems for Polymerization upon Visible Light: Development of Photosensitive Resins for 3D and 4D Applications, Computed Properties of 10287-53-3, the publication is ACS Applied Polymer Materials (2021), 3(1), 464-473, database is CAplus.

Two fac-rhenium tris-carbonyl complexes bearing a π-accepting pyridoannelated N-heterocyclic carbene (NHC) ligand with general formula Re(CO)₃(pyipy)X, where pyipy is 2-pyridil-imidazo[1,5-a]pyridine-3-ylidene and X = Cl (Re1) and Br (Re2), are investigated as photoredox catalytic systems in light-promoted polymerization reactions. Both rhenium(I) complexes are able to efficiently generate radicals to initiate free radical polymerization Remarkably, excellent radical polymerization profiles and final conversions are obtained under soft irradiations (LED lamp, λ_exc = 405 nm) by using the proposed complexes with iodonium salt and amine as photoinitiating systems (PISs) for polyethyleneglycol (PEG)-acrylate monomers. The involved mechanism is investigated by means of different spectroscopic techniques and further supported by electrochem. data. In addition, using the prepared three-component PISs, outstanding 3D patterns with spatial resolution could be obtained through direct laser write experiments Remarkably, the resulting material displays reversible deformation that can be controlled with heating-hydration cycles due to stimuli-responsiveness of PEG chains of the polymeric network, thus opening the way for innovative smart and stimuli-responsive 4D-printed materials and soft actuators.

ACS Applied Polymer Materials published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Computed Properties of 10287-53-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Qi, Yujie published the artcileHigh-efficient lignin-based polymerizable macromolecular photoinitiator with UV-blocking property for visible light polymerization, Safety of Ethyl 4-dimethylaminobenzoate, the publication is International Journal of Biological Macromolecules (2022), 234-244, database is CAplus and MEDLINE.

Developing high-efficient visible light macromol. photoinitiator (macro PI) with excellent initiation performance, low migration, high biosafety and multi-function is beneficial to broaden the application of photopolymer. Lignin contains chromophores which could generate free radicals under light irradiation In this study, a lignin-based polymerizable macro PI (DAL-11ene-amine) was designed and synthesized through covalent grafting 10-undecenoyl chloride (11ene) and hydrogen donor 4-(dimethylaminobenzoic acid) Et ester (EDAB) into dealkaline lignin (DAL) skeleton. The structure of DAL-11ene-amine was characterized by UV-vis, FTIR, ¹H NMR, GPC, and ³¹P NMR spectra. Under the irradiation of a 405 nm LED, DAL-11ene-amine can directly produce active species and initiate the polymerization of acrylate monomers or thiol-ene click reaction. The photoinitiation efficiency of DAL-11ene-amine is higher than that of DAL-11ene or the two-component combination of DAL-11ene and EDAB. Using DAL-11ene-amine as PI, the prepared polymer films exhibit excellent UV-blocking property. With only 0.5 weight% addition of DAL-11ene-amine, nearly 100% of UVB + UVC and the most of UVA can be blocked by the films. Moreover, DAL-11ene-amine exhibits higher migration stability and biosafety because it can be covalently linked into polymer crosslinking networks. The results indicate that DAL-11ene-amine has great application potentials in preparing environmentally friendly UV-blocking films and biosafety coatings.

International Journal of Biological Macromolecules published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Safety of Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Juan published the artcileDetermination of 21 photoinitiators in human plasma by using high-performance liquid chromatography coupled with tandem mass spectrometry: A systemically validation and application in healthy volunteers, Synthetic Route of 10287-53-3, the publication is Journal of Chromatography A (2021), 462079, database is CAplus and MEDLINE.

In the present study, a comprehensive and sensitive method for simultaneous determination of 21 PIs (nine benzophenones, eight amine co-initiators, and four thioxanthones) in human plasma using high-performance liquid chromatog. coupled with tandem mass spectrometry was developed and validated. Two different pre-treatment approaches (liquid-liquid extraction (LLE) and LLE coupled with solid-phase extraction (SPE)) and eight extraction solvents were studied to optimize sample treatment to obtain good recoveries and reduce any matrix effects. The procedure of LLE+SPE was selected as final sample treatment procedure because it obtained higher recoveries as well as lower matrix effects than that performed by LLE alone. The recoveries of 21 target analytes at three spiked concentrations (0.05, 0.5, and 5 ng/mL) ranged from 81% to 109%. The intra- and inter-day relative standard deviations were between 2.5% and 13%. Accuracy and precision data indicated that the detection method was accurate and precise for most of the PIs. The linearities of the labeled dilution calibration curves at 10 concentration levels (iLOQ to 100 ng/mL or iLOQ to 200 ng/mL) were good with correlation coefficients ranged from 0.995 to 0.999. The method quantification limits were in the range of 1.7-16 pg/mL. The anal. method was applied to the anal. of PIs in 14 human plasma samples collected from pregnant women in Guangdong Province, China. Fifteen PIs were detected with total concentrations ranging from 318 to 2772 pg/mL. The ubiquitous contamination of human plasma with PIs suggests that there is widespread exposure to these compounds Consequently, there should be increased awareness of these pollutants in the environment.

Journal of Chromatography A published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Synthetic Route of 10287-53-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zhang, Huiyuan published the artcileA Sprayable and Visible Light Rapid-Cured Strippable Film for Surface Radioactive Decontamination, SDS of cas: 10287-53-3, the publication is Polymers (Basel, Switzerland) (2022), 14(5), 1008, database is CAplus and MEDLINE.

Strippable film is effective for removing radioactive contamination. However, it still has some limitations, such as the long curing time (about 30 min∼24 h) and the requirement of organic solvents. To address these issues, we report a simple protocol to prepare strippable decontamination films using liquid polybutadiene (LPB) and tert-Bu acrylate (TBA) as the raw materials without solvent and using camphorquinone/ethyl 4-dimethylaminobenzoate (CQ/EDB) as a photoinitiator, where the film was formed under household LED panel light or daylight irradiation for about 540 s. After a thorough study of viscosity, real-time Fourier transform IR (RT-FTIR spectra), gel and volatile organic compound (VOC) contents, mech. properties and decontamination efficiency, the optimum composition and curing conditions were determined for the decontamination strippable film. VOC content is as low as 12.7 ± 0.7and the resultant strippable film exhibits good mech. performances with a tensile strength of up to 5.4 ± 0.4 MPa and elongation of up to 66.6 ± 13. Most important, the decontamination efficiencies of this strippable film for 133CsCl on glass, ceramic and metal surfaces reach up to 98.1, 94.3and 97.6, resp.

Polymers (Basel, Switzerland) published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C18H28N2O7, SDS of cas: 10287-53-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Liu, Jie published the artcileDesign, synthesis, in vitro and in vivo evaluation against MRSA and molecular docking studies of novel pleuromutilin derivatives bearing 1, 3, 4-oxadiazole linker, COA of Formula: C11H15NO2, the publication is Bioorganic Chemistry (2021), 104956, database is CAplus and MEDLINE.

A class of pleuromutilin derivatives containing 1,3,4-oxadiazole were designed and synthesized as potential antibacterial agents against Methicillin-resistant staphylococcus aureus (MRSA). The ultrasound-assisted reaction was proposed as a green chem. method to synthesize 1,3,4-oxadiazole derivatives Among these pleuromutilin derivatives, compound 133 (I) was found to be the strongest antibacterial derivative against MRSA (MIC = 0.125μg/mL). Furthermore, the result of the time-kill curves displayed that compound 133 could inhibit the growth of MRSA in vitro quickly (-4.36 log10 CFU/mL reduction). Then, compound 133 (-1.82 log₁₀ CFU/mL) displayed superior in vivo antibacterial efficacy than tiamulin (-0.82 log₁₀ CFU/mL) in reducing MRSA load in mice thigh model. Besides, compound 133 exhibited low cytotoxicity to RAW 264.7 cells. Mol. docking studies revealed that compound 133 was successfully localized in the binding pocket of 50S ribosomal subunit (ΔG_b = -10.50 kcal/mol). The results indicated that these pleuromutilin derivatives containing 1,3,4-oxadiazole might be further developed into novel antibiotics against MRSA.

Bioorganic Chemistry published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, COA of Formula: C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Matic, Tamara published the artcileSr,Mg co-doping of calcium hydroxyapatite: Hydrothermal synthesis, processing, characterization and possible application as dentin substitutes, Product Details of C11H15NO2, the publication is Ceramics International (2022), 48(8), 11155-11165, database is CAplus.

The aim of this study was to investigate the influence of binary Sr, Mg ion-doping compared to the single-ion doping effects on the phase composition and morphol. of hydrothermally obtained calcium hydroxyapatite (HAP) powders and on the phase composition, microstructure, and mech. properties of the sintered materials. Addnl., the focus of this study was to investigate the possible utilization of the binary doped Sr,Mg-HAP compacts as dentin substitutes in restorative dentistry by evaluating their bonding ability with com. available restorative materials using the shear bond strength test (SBS). The hydrothermally obtained mono-doped Mg5 and Sr5 showed the monophasic apatite structure, while in all co-doped samples β-TCP phase was formed, resulting in biphasic calcium phosphate (BCP) powders. It was confirmed that co-doping with Sr and Mg ions led to the thermal stabilization of the β-TCP phase by suppressing the phase transition into α-TCP when sintered at 1200 βC. Moreover, the co-presence of Mg ions significantly improved the hardness of Sr-doped HAP from 3.74 to 5.02 GPa. Sr,Mg-HAP dental inserts were found to achieve sufficient bonding (13.53 MPa) through the micromech. interlocking with Z250 dental composite and Single Bond Universal dental adhesive applied with a total etch approach. The SBS values obtained for the SrMg-HAP insert were similar to the literature data on bonding ability with human dentin, indicating that binary doped Sr,Mg-HAP ceramics present a promising material for application in restorative dentistry as dentin substitutes.

Ceramics International published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Product Details of C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Blanco-Zubiaguirre, L. published the artcileMigration of photoinitiators, phthalates and plasticizers from paper and cardboard materials into different simulants and foodstuffs, Name: Ethyl 4-dimethylaminobenzoate, the publication is Food Chemistry (2021), 128597, database is CAplus and MEDLINE.

The migration of photoinitiators, phthalates and plasticizers from two paper and cardboard materials into food simulants (50% and 95% EtOH and Tenax) and foodstuffs (rice, cereals and milk powder) was studied. In the case of liquid simulants migration was observed to reach the equilibrium after 60 min and depended on the material type and the physicochem. parameters of the migrants, whereas the temperature (room temperature and 60°C) did not show significant effects. The study of migration of the compounds from a baking paper to Tenax at high temperatures (150 and 250°C) evidenced an increment of migration when increasing temperature, except for the most volatile analytes. Finally, the migration to foodstuffs was studied using fully validated anal. protocols. Overall, the comparison of the migration rates demonstrated that Tenax was adequate for the simulation of the migration to rice and cereals, but underestimated the migration to infant milk powder, for which 95% EtOH resulted a more suitable simulant.

Food Chemistry published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Name: Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Peng, X. published the artcileNewly Synthesized Chromophore-linked Iodonium Salts as Photoinitiators of Free Radical Photopolymerization, SDS of cas: 10287-53-3, the publication is Macromolecular Chemistry and Physics (2021), 222(9), 2100035, database is CAplus.

Iodonium salts are the topic of interest in the field of photopolymerization as they act as effective photoinitiators and generators of photoacid. Yet, the current com. available iodonium salts have low absorption above 300 nm whereby limiting the use of the long-wavelength of light irradiations to trigger polymerization Iodonium salts are thus generally used in couples with photosensitizers (e.g., dyes) to extend the usage under irradiation of red-shifted light wavelength. In this research, the synthesis of chromophore-linked (anthraquinone-based and flavone-based chromophores) iodonium salts is present. They can initiate free radical polymerization with 320-480 nm irradiation and show much better photoinitiation ability as compared to com. iodonium salts, especially when they act as mono-component photoinitiators. Steady-state photolysis and ESR spin trapping experiments are also carried out to evaluate the relevant photochem. mechanism.

Macromolecular Chemistry and Physics published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, SDS of cas: 10287-53-3.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics