Category: 10287-53-3

Favarao, J. published the artcileEffect of curing-light attenuation on color stability and physical and chemical properties of resin cements containing different photoinitiators, SDS of cas: 10287-53-3, the publication is Journal of the Mechanical Behavior of Biomedical Materials (2021), 104110, database is CAplus and MEDLINE.

This study aimed to evaluate the effect of light attenuation by ceramic veneers on the degree of conversion (DC), flexural strength (FS) and color change (CC) of resin cements containing different photoinitiators. Thus, samples included resin cements containing different photoinitiators: (a) camphorquinone (CQ)/ethyl 4-(dimethylamino)benzoate (EDMAB); (b) CQ/4-(N,N-dimethylamino) phenethyl alc. (DMPOH); (c) CQ/2(dimethylamino) Et methacrylate (DMAEMA); (d) CQ/ethyl 4-(dimethylamino)benzoate (EDMAB) + diphenyl(2,4,6-trimethylbenzoyl)-phosphine oxide (TPO); (e) TPO; and (f) phenylbis(2.4.6-trimethylbenzoyl)phosphine oxide (BAPO). Ceramic veneers (10 x 10 mm) were 0.4 mm, 0.7 mm, 1.0 mm or 1.5 mm thick. The light irradiance of a multiple-peak LED through ceramic veneers was measured (n = 5) using a spectrometer. DC (micro-Raman spectrometer) and FS (Bar-shaped specimens) were tested in cements with and without the veneers. Color change was evaluated before and after UV artificial aging. Data were submitted to ANOVA and Tukey’s test (α = 0.05). The violet spectrum showed the lowest irradiance values through the veneer, considering all thicknesses. BAPO had the highest DC values for all veneers. CQ/EDMAB + TPO, CQ + EDMAB, and CQ + DMPOH showed similar DC values concerning all thicknesses. TPO (1.0 mm) showed the lowest DC and FS values. CQ + TPO and CQ/amines showed similar FS values. CQ + EDMAB and CQ + DMAEMA showed the highest color change values while TPO showed the lowest. It was concluded that the phys. and chem. properties of the resin cement were improved with BAPO. CQ/EDMAB + TPO showed the greatest color stability, considering all veneer groups and control, without affecting the other properties assessed.

Journal of the Mechanical Behavior of Biomedical 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, SDS of cas: 10287-53-3.

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

Caron, Aurore published the artcileNear-Infrared Photoinitiating Systems: Photothermal versus Triplet-Triplet Annihilation-Based Upconversion Polymerization, Computed Properties of 10287-53-3, the publication is Macromolecular Rapid Communications (2021), 42(11), 2100047, database is CAplus and MEDLINE.

NIR light-induced polymerization has attracted more and more attention in the photopolymerization field due to the possibility to use safer and more penetrating wavelengths, reducing the hazardousness. Here, a novel perspective for the free radical polymerization of acrylate-based monomers based on triplet-triplet annihilation upconversion (TTA-UC) is proposed, avoiding the introduction of heavy metals, usually required in the TTA processes. Thermal imaging experiments and Fourier transform IR spectroscopy are resp. used to record the temperature during NIR irradiation and measure the reactive function conversion. The competition between the TTA-UC and the NIR photothermal activation is investigated to compare the relative efficiency of both NIR processes. In view of the results obtained by the different methods, the photothermal effect seems to get the upper hand over the photoactivation of the system.

Macromolecular Rapid Communications 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

Li, Jingfang published the artcileHydrogen bond complex used as visible light photoinitiating system for free radical photopolymerization: Photobleaching, water solubility, COA of Formula: C11H15NO2, the publication is Progress in Organic Coatings (2021), 106099, database is CAplus.

A type II photoinitiator (2E,6E)-2,6-bis((1H-pyrrol-2-yl)methylene)cyclohexan-1-one(BPC) was conveniently synthesized through Claisen-Schmidt reaction. Hydrogen bond complex BFC/TEOA not only exhibits high photo-reactivity on the visible light polymerization, but also shows rapid bleach, excellent dispersibility in water which could be potential for photo-induced organic coating.

Progress in Organic Coatings 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

Dasgupta, Sudip published the artcileHydroxyapatite-collagen nanoparticles reinforced polyanhydride based injectable paste for bone substitution: effect of dopant addition in vitro, Computed Properties of 10287-53-3, the publication is Journal of Biomaterials Science, Polymer Edition (2021), 32(10), 1312-1336, database is CAplus and MEDLINE.

The present study focuses on the synthesis and characterization of hydroxyapatite-collagen nanoparticles incorporated polyanhydride paste and investigating its bone regeneration capacity in vitro. Si, Sr, and both Si/Sr doped hydroxyapatite-collagen nanoparticles to the extent 10 wt% were added to polyanhydride monomer mixture containing 40 wt% MSA, 40 wt% MCPH and 10 wt% PEGDA and subsequently photopolymerized as previously mentioned. Incorporation of hydroxyapatite-collagen nanoparticles to the extent of 10 wt% into polyanhydride matrix enhanced compressive strength of the hardened paste from 30 to 49 MPa. MTT assay showed that mesenchymal stem cell proliferation was significantly higher in Si/Sr binary doped hydroxyapatite-collagen-polyanhydride sample as compared to other samples. Again from immunocytochem. study using confocal images suggested that expression of osteocalcin, a marker indicating differentiation into osteoblast, was the highest in Si/Sr binary doped hydroxyapatite-collagen-polyanhydride sample against the other samples studied in this case. This study thus summarizes the development of photocurable biocomposites containing polyanhydride and Si, Sr doped hydroxyapatite-collagen nanoparticles that exhibited tremendous promise to regenerate bone tissues in complex-shaped musculoskeletal defect sites.

Journal of Biomaterials Science, Polymer Edition 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

Rahal, Mahmoud published the artcileNaphthalimide-Based Dyes as Photoinitiators under Visible Light Irradiation and their Applications: Photocomposite Synthesis, 3D printing and Polymerization in Water, Name: Ethyl 4-dimethylaminobenzoate, the publication is ChemPhotoChem (2021), 5(5), 476-490, database is CAplus.

In this work, six new fluorescent dyes derived from the naphthalimide scaffold (Napht1-Napht6) were synthesized and used as high-performance photoinitiating systems (PISs) in two and three-component systems (combined with iodonium salt (Iod) and/or an electron donor amine (such as N-phenylglycine[NPG])) for the radical photopolymerization of acrylate and methacrylate monomers under visible light using a light-emitting diode at 405 nm. Markedly, these dyes were never synthesized before. In fact, these PISs showed high initiation efficiency with both demonstrating high final reactive function conversions and high polymerization rates. A further interest of our study is to determine the effect of the different substituents (chromophoric group) on the naphthalimide function, concerning the efficiency of initiation of the free radical polymerization In order to improve the mech. properties of the obtained polymers, these derivatives were also tested for the photopolymerization of a blend of acrylate/epoxy monomers (TA/EPOX); these latter properties were characterized by traction tests. To demonstrate the initiation efficiency of these dyes, several methods and characterization techniques were used, including steady state photolysis, real-time Fourier transform IR spectroscopy, emission spectroscopy as well as cyclic voltammetry. In our study, these naphthalimides were used for the synthesis of photocomposites (one and multiple layers of glass fibers) using a UV@395 nm (4 W/cm2) conveyor, as well as in the preparation of 3D printed polymers. Markedly, one of the naphthalimide derivatives (Napht-4) can be used as a new high-performance water soluble photoinitiator for photopolymerization in water and hydrogel synthesis.

ChemPhotoChem 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

Champion, Aymeric published the artcileA Simple and Efficient Model to Determine the Photonic Parameters of a Photopolymerizable Resin Usable in 3D Printing, Recommanded Product: Ethyl 4-dimethylaminobenzoate, the publication is ChemPhotoChem (2021), 5(9), 839-846, database is CAplus.

This study provides insight into the relationship between the photochem. reactivity and the photonic parameters of an acrylate formulation usable in digital light processing (DLP) 3D printing. First the photoreactivity of riboflavin tetrabutyrate (RFT) used as a non-toxic photoinitiator is assessed by laser flash photolysis in the absence and in the presence of an amine as co-initiator. RFT alone is able to photopolymerize the acrylate formulation at a rate which is drastically increased when the co-initiator is added. Then, the depth of light penetration (Dp) and the critical energy (Ec) to form a polymer film were measured and compared to those determined from the Bouguer-Lambert-Beer law for Dp and from the Stockmayer equation and photopolymerization experiments for Ec. A new proposed model is able to predict the in-depth acrylate conversion within a printed part with a relatively low input of exptl. parameters. Confocal Raman microscopy is used to discuss the effect of the photobleaching of RFT in the absence of co-initiator on the photopolymerized films. Finally, it is shown that this formulation performs quite well for 3D printing with a resolution close to the best performance of the DLP printer.

ChemPhotoChem 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, Recommanded Product: Ethyl 4-dimethylaminobenzoate.

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

Palialol, Alan R. published the artcileImprovement on properties of experimental resin cements containing an iodonium salt cured under challenging polymerization conditions, Product Details of C11H15NO2, the publication is Dental Materials (2021), 37(10), 1569-1575, database is CAplus and MEDLINE.

The use of resin cements in clin. practice entails photopolymerization through prosthetic devices, which precludes light penetration. The objective of this study was to modify exptl. resin cements (ERCs) with diphenyliodonium hexafluorophosphate (DPI) in an attempt to improve chem. and mech. properties of materials cured with reduced irradiance and final radiant exposure.A co-monomer base containing A 1:1 mass ratio of 2.2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (bis-GMA) and triethyleneglycol dimethacrylate (TEGDMA) was prepared, with 1 mol% of camphorquinone and 2 mol% of Et 4-(dimethylamino)benzoate as initiator system. The resin was divided into 4 fractions according to the DPI concentrations (0, 0.5, 1 and 2 mol%). The challenging polymerization condition was simulated performing the light activation (12, 23 and 46 s) through a ceramic block (3 mm thick). The irradiance was assessed with a calibrated spectrometer (1320 mW/cm²), resulting in three levels of radiant exposure (0.58, 1.1 and 2.2 J/cm²). The polymerization kinetics was evaluated in real-time using a spectrometer (Near-IR). Water sorption and solubility was analyzed and the cohesive strength of resins obtained through the microtensile test. Polymerization stress was assessed by Bioman method.Resins containing DPI had higher degree of conversion and rate of polymerization than the control (without DPI). The use of DPI reduced water sorption and solubility, and led to higher cohesive strength compared to resins without the iodonium salt. However, the stress of polymerization was higher for exptl. resins with DPI.Even under remarkably reduced irradiance, cements containing A ternary initiating system with an iodonium salt can present an optimal degree of conversion and chem./mech. properties.

Dental 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, Product Details of C11H15NO2.

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

Hu, Ying published the artcileCsp³-H monofluoroalkenylation via stereoselective C-F bond cleavage, Formula: C11H15NO2, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(16), 2734-2737, database is CAplus and MEDLINE.

A practical nickel- and photoredox-catalyzed Csp³-H monofluoroalkenylation through chelation-assisted Csp²-F bond cleavage of gem-difluoroalkenes for the synthesis of stereodefined tetrasubstituted fluoroalkenes were developed. Moreover, the gem-difluoroalkenes could also undergo photoredox-catalyzed cascade twofold C-F diaminomethylation.

Chemical Communications (Cambridge, United Kingdom) 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, Formula: C11H15NO2.

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

Zhao, Menglu published the artcile3D-printed strong hybrid materials with low shrinkage for dental restoration, Safety of Ethyl 4-dimethylaminobenzoate, the publication is Composites Science and Technology (2021), 108902, database is CAplus.

Flowable photocurable resins can be printed effectively by stereolithog. 3D printing for dental applications; however, the 3D-printed objects′ mech. properties cannot meet the requirements for the dental restorative materials. In this study, a strong customized crown for tooth repair was first prepared via direct ink writing 3D printing from a high-viscosity hybrid paste of acrylic monomer and multi-scale inorganic particles. The results showed that the hybrid resin-based composites (RBCs) could be printed successfully and smoothly through a metal nozzle with a gradually shrinking channel. The theor. simulation of finite element methods was consistent with the experiment results. The printed objects were preliminarily cured incrementally and exhibited a low shrinkage ratio of only 2.58 ± 0.11%. The printed samples with criss-crossed layers by interrupting crack propagation exhibited superior mech. properties (a flexural strength of 120.8 ± 4.1 MPa and a compressive strength of 323.6 ± 5.6 MPa) than their traditional molding counterparts. Since the deposited layers exhibited improved resistance to bending forces, the flexural strength of the sample with a print orientation in adjacent layers (45-135°) even reached 145.5 ± 8.7 MPa. The RBCs were successfully used to print strong, high-performance and biocompatibility dental crowns, expected to provide a customized component for the clin. restoration of teeth.

Composites Science and Technology 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 C10H18O4, Safety of Ethyl 4-dimethylaminobenzoate.

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

Tang, Zhaoxian published the artcileCinnamoylformate derivatives photoinitiators with excellent photobleaching ability and cytocompatibility for visible LED photopolymerization, Safety of Ethyl 4-dimethylaminobenzoate, the publication is Progress in Organic Coatings (2022), 106969, database is CAplus.

In this work, four Et cinnamoylformate derivatives photoinitiators (ECFs), which have good photobleaching ability and excellent cytocompatibility in LED-triggered photopolymerization, were designed and synthesized by a simple two-step reaction. The potential initiating and photobleaching mechanisms of ECFs under visible LED were researched by UV-visible absorption spectroscopy, NMR, high-resolution mass spectroscopy and ESR. The as-prepared photoinitiators Et p-methoxycinnamoyl formate (O-ECF) and Et p-methylmercaptocinnamoyl formate (S-ECF) exhibited much higher initiating rate under 405 nm and 455 nm LED compared to the com. photoinitiator 2-isopropylthioxanthone (ITX). More significantly, carbon-carbon double bonds of ECFs can polymerize in the presence of tertiary amine under the irradiation of 455 nm or 405 nm LED, which endows ECFs with good photobleaching performance and excellent migration stability and cytocompatibility. Furthermore, ECFs are able to greatly initiate deep-layer photopolymerization under 455 nm LED and the photopolymerization depth reached 7.0 cm after the irradiation for 20 min. This work also affords a new perspective for designing photoinitiators with good photobleaching performance.

Progress in Organic Coatings 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 C9H11BO4, Safety of Ethyl 4-dimethylaminobenzoate.

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