Category: 92-71-7

Related Products of 92-71-7. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Initiator-free preparation and properties of polystyrene-based plastic scintillators. Author is Xu, Yewei; Deng, Hongyang; Lei, Hong; Chang, Guanjun.

A series of polystyrene-based scintillators have been prepared by thermal polymerization without any initiators. To investigate the influence of the primary additive and wavelength shifter on the performance of plastic scintillator, two primary additives and four wavelength shifters were added to the scintillators, resp. The results showed that 2,5-diphenyloxazole (PPO) and 5-phenyl-2-[4-(5-phenyl-1,3-oxazol-2-yl)phenyl]-1,3-oxazole (POPOP) were the most adequate fluorescent dyes for initiator-free preparation of the polystyrene-based scintillators. The plastic scintillator containing 1% PPO and 0.02% POPOP possessed the highest fluorescence intensity. Initiator-containing polystyrene-based scintillator with the same concentration of PPO and POPOP (1% PPO, 0.02% POPOP and 0.01% AIBN) was also prepared The light yield of the plastic scintillator without any initiators is 83.49% relative to the value of the standard sample EJ-200, which is higher 8% than that of initiator-containing plastic scintillator. Moreover, compared with the standard sample EJ-200 with a decay time of 2.09 s, the decay time of the initiator-free and initiator-containing plastic scintillator was 1.80s and 1.86 s, resp.

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Name: 2,5-Diphenyloxazole. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Search for reactor neutrino directionality using a LAB-based Gd-loaded liquid scintillation detector. Author is Seo, Jun Hu; Atif, Zohaib; Shin, Chang Dong; Joo, Kyung Kwang.

Recently, several interesting phenomena related to neutrinos have been found using reactor neutrinos and we have learned much about the properties of neutrinos. Ultrapure water or liquid scintillator is generally used to detect neutrinos. Since a detector filled with water can use the Cherenkov light emitted in a conical shape based on the direction of a charged particle, the direction of the incident neutrinos can be reconstructed relatively well. However, in a detector filled with the liquid scintillator, the reactor neutrino signal can be reconstructed using information from the Inverse Beta Decay (IBD) process. In this case, it is not easy to determine the direction of an incident neutrino because light is emitted in all directions. In this study, we briefly investigated the possibility of the directional reconstruction of reactor neutrinos in the Linear Alkyl Benzene (LAB)-based Gadolinium (Gd)-loaded liquid scintillator using a Monte Carlo simulation technique. The LAB was used in place of existing, conventional liquid scintillation detector solution It has a high flash point and is environmentally friendly. The purpose of this study was to show a practical and interesting application of neutrino direction reconstruction for reactor neutrinos that could be used in future large liquid scintillator neutrino detectors.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2,5-Diphenyloxazole(SMILESS: C1(C2=CC=CC=C2)=NC=C(C3=CC=CC=C3)O1,cas:92-71-7) is researched.Recommanded Product: 111-18-2. The article 《One-pot dual catalysis for the hydrogenation of heteroarenes and arenes》 in relation to this compound, is published in Catalysis Science & Technology. Let’s take a look at the latest research on this compound (cas:92-71-7).

A simple dinuclear monohydrido bridged ruthenium complex [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] acted as an efficient and selective catalyst for the hydrogenation of various heteroarenes and arenes. The nature of the catalytically active species was investigated using a combination of techniques including in situ reaction monitoring, kinetic studies, quant. poisoning experiments and electron microscopy, evidencing a dual reactivity. The results suggested that the hydrogenation of heteroarenes proceeded via mol. catalysis. In particular, monitoring the reaction progress by NMR spectroscopy indicated that [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] was transformed into monomeric ruthenium intermediates, which upon subsequent activation of dihydrogen and hydride transfer accomplish the hydrogenation of heteroarenes under homogeneous conditions. In contrast, carbocyclic aryl motifs were hydrogenated via a heterogeneous pathway, by in situ generated ruthenium nanoparticles. Remarkably, these hydrogenation reactions could be performed using mol. hydrogen under solvent-free conditions or with 1,4-dioxane, and thus gave access to a broad range of saturated heterocycles such as 1,2,3,4-tetrahydroquinoline and carbocycles such as perhydro-9-anthracenemethanol while generating no waste.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 92-71-7, is researched, Molecular C15H11NO, about Attempting to prepare a plastic scintillator from a biobased polymer, the main research direction is plastic scintillator preparation biopolymer fluorophore gamma irradiation.HPLC of Formula: 92-71-7.

A new plastic scintillator was prepared from a renewable polymer source. It is composed of the mighty 2,5-diphenyloxazole and 1,4-bis(2-methylstyryl)benzene mols. (PPO and bis-MSB), acting as primary and secondary fluorophores, resp., together dissolved in a polylactic acid matrix-PLA. This polymer is indeed considered as the biomass-based equivalent of petroleum-derived plastics in terms of mech. and optical properties. Subsequent to the bis-MSB emission, the emission wavelength is centered around 424 nm and the fluorescence decay time is in the nanosecond range. The material was fully characterized, and its scintillation performances were compared to a com. PVT-based plastic scintillator: EJ-200. Like polystyrene- or polyvinyltoluene-based scintillators, the material displayed a good response linearity with the energy of the incident gamma-ray. However, the observed scintillation yield was rather modest, with a reported 500 ph/MeV value when excited with a gamma-ray-emitting 60Co source. This preliminary test could pave the way to new and renewable polymers for unexpected applications such as nuclear physics.

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Karimi, M.; Raeisi, M.; Bagherzadeh, M.; Payami, F. published the article 《Enhancement in photoluminescence properties of organic compound PS/PPO by cerium fluoride nanoparticles doping》. Keywords: diphenyloxazole polystyrene doping cerium fluoride photoluminescence property.They researched the compound: 2,5-Diphenyloxazole( cas:92-71-7 ).Reference of 2,5-Diphenyloxazole. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:92-71-7) here.

Herein, a new polymeric nanocomposite of 2,5-diphenyloxazole (PPO) and polystyrene (PS) doped with cerium fluoride (CeF3) nanoparticles (PS/PPO/CeF3) was prepared, characterized and its photoluminescence property was reported for the first time. The PS as a base matrix and PPO as a fluor were chose for a scintillator solution substrate and CeF3 nanoparticles dispersed into it to construct a new nanocomposite scintillator. The PS liquid polymeric matrix with 0.5 wt% of PPO was loaded with different percentage of CeF3 nanoparticles. Structural characterizations showed successful preparation of nanocomposites and a mean size of CeF3 nanoparticles as (13 ± 3) nm in the base polymer matrix. The measured photoluminescence showed an enhancement about 3 times in comparison to PS/PPO composite when 10% of CeF3 nanoparticles doped into the polymeric composite matrix under UV excitation. This effect is due to fluorescence resonance energy transfer in Ce3+ ions (5d → 4f transition energy) to the PPO within the PS/PPO/CeF3 nanocomposite. Observed results were presented and discussed.

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Liang, Ya-Ru; Si, Xiao-Ju; Zhang, He; Yang, Dandan; Niu, Jun-Long; Song, Mao-Ping published an article about the compound: 2,5-Diphenyloxazole( cas:92-71-7,SMILESS:C1(C2=CC=CC=C2)=NC=C(C3=CC=CC=C3)O1 ).Application of 92-71-7. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:92-71-7) through the article.

A thiocarbamate-directed Cp*Co(III)-catalyzed C-H oxidative amidation of olefins is achieved to synthesize a series of enamines. The key feature of this protocol is the use of earth-abundant cobalt as catalyst and thiocarbamate as directing group, which provides an efficient and simple manner to synthesize enamines in good yields with high (Z)-selectivity. This reaction proceeds smoothly under very mild conditions (rt and air), and a wide range of functionalized alkenes, as well as dioxazolones, were compatible with the standard reaction conditions.

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Klitting, Olivia; Sguerra, Fabien; Bertrand, Guillaume H. V.; Villemot, Vincent; Hamel, Matthieu published the article 《Preparation and characterization of cross-linked plastic scintillators》. Keywords: crosslinked plastic scintillator radiation detector.They researched the compound: 2,5-Diphenyloxazole( cas:92-71-7 ).Quality Control of 2,5-Diphenyloxazole. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:92-71-7) here.

Plastic scintillators are efficient and low-cost detectors suitable for radiation detection. Obviously and as for all detectors, plastic scintillators display both advantages and drawbacks. Among disadvantages, it is known that their use is prohibited at elevated temperatures (e.g. 100°C) due to their organic, polymeric nature. Com. providers recommend therefore using plastic scintillators at temperatures below 60°C to mitigate this degradation Herein, the authors present the preparation and the characterization of plastic scintillators based from crosslinked polystyrene derivatives, which allow them stability at high temperatures (i.e., tested up to 110°C) while maintaining their scintillation properties. Their preparation, phys. characterization, and relative scintillation yield estimated by radioluminescence is reported, so as to determine the influence of the crosslinking on these properties. In addition, the materials are bench marked with two com. plastic scintillators from Eljen technol.: all-purpose EJ-200 and cross-linked EJ-244.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2,5-Diphenyloxazole( cas:92-71-7 ) is researched.Safety of 2,5-Diphenyloxazole.Nabha-Barnea, Shiran; Gotleyb, Dor; Yonish, Adi; Shikler, Rafi published the article 《Relating transient electroluminescence lifetime and bulk transit time in OLED during switch-off》 about this compound( cas:92-71-7 ) in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. Keywords: electroluminescence transient lifetime bulk transit time organic LED switchoff; diode light emitting organic transient lifetime transit time switchoff; electroluminescent device organic transient lifetime transit time switchoff. Let’s learn more about this compound (cas:92-71-7).

A study on the dependence of the transient electroluminescence lifetimes in polyfluorene blend-based LEDs on the injection efficiency during the turn-off cycle is presented. Using a specially designed driver that minimizes the interaction of the outer switch-off circuit with the diode, were able to keep the light intensity continuous during the switching and allow the study of the dynamic mechanisms of intrinsic charge. A bi-exponential decay of the transient electroluminescence, a fast decay with a lifetime of tens of nanoseconds, followed by a slow decay with a lifetime of hundreds of nanoseconds was observed The slow lifetime increases, by >25%, with the increase in the injection efficiency, controlled by varying the thickness of a LiF injection layer. The slow decay is attributed to the transit time via the drift of the mobile charges between the space charge regions during discharge. This hypothesis was tested and verified using 2 methods that affect the elec. field in the bulk region. In the 1st the thickness of the active layer was controlled, and in the 2nd the applied operation voltage was varied. Based on this model, the variation in the thickness of the injection layer influences the width of the space-charge region and hence influences the division of the voltage drop between the space charge regions and the bulk. Under a constant applied voltage, devices with higher injection efficiency have a smaller elec. field in the bulk, and therefore, a longer transit time, which correlates with the EL decay lifetime. These observations are supported by simulation based on the drift-diffusion model.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Review of Scientific Instruments called Range measurement and fluorescence imaging analysis using electron beams with new liquid scintillator based on alcohol, Author is Kim, Byoung Chan; Kim, Ye Ji; Choi, Ji Young; Joo, Kyung Kwang; Park, Seon Yeoung; Song, Ye Sung; Woo, Hee Jin, which mentions a compound: 92-71-7, SMILESS is C1(C2=CC=CC=C2)=NC=C(C3=CC=CC=C3)O1, Molecular C15H11NO, Category: thiazole.

This paper proposes a new base material, a mixture of alc. and water, for liquid scintillators. To date, there are no previous R&D studies for particle detectors with alc. In this study, 2-ethoxyethanol, which has a higher d. than ethanol, was used to make an equivalent substance to the human body, namely, the skin or epidermis. This paper describes the brief synthesizing process of the alc.-based liquid scintillator that was investigated and presents some of the feasible results. As one of its applications, a range (beam-path-length) measurement using an electron beam in medical physics is also described. Then, Monte Carlo simulation was performed for comparison with several other measurement results in medical physics. One of the intriguing results is that liquid scintillator component anal. can be performed through the pixel information stored in a mobile digital camera. Through the emission spectra of light, the component of the wavelength converting substances dissolved in the liquid scintillator can be known in the visible region without opening the sealed liquid scintillator. In the near future, the new alc.-based liquid scintillator currently developed could be used for particle detector or medical imaging applications. (c) 2021 American Institute of Physics.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Banerji, Biswadip; Adhikary, Saswati; Majumder, Leena; Ghosh, Saswati researched the compound: 2,5-Diphenyloxazole( cas:92-71-7 ).Product Details of 92-71-7.They published the article 《A Green Synthetic Approach towards Polyarylated Oxazoles via Iodine-Catalyzed One-Pot sp3 C-H Functionalization in Water: From Natural Product Synthesis To Photophysical Studies》 about this compound( cas:92-71-7 ) in Asian Journal of Organic Chemistry. Keywords: polyaryl oxazole preparation green chem regioselective; primary amine diketone acyloin aerobic oxidative cyclization iodine catalyst. We’ll tell you more about this compound (cas:92-71-7).

A ‘green’ methodol. for the convenient synthesis of specific regioisomers of polysubstituted oxazoles through iodine catalyzed, water-mediated, aerobic oxidative C(sp3)-H functionalization of primary amines has been developed. This mild and regioselective domino procedure does not require toxic peroxides, transition metals and organic solvents. The versatility of this methodol. was demonstrated by preparing a natural product, texaline. It is also scalable and has a wide substrate scope. This methodol. opens up a simple avenue for the synthesis of polyarylated oxazoles from various readily available amines as well as 1,2-diketones and acyloins (α-hydroxyl ketones) in moderate to excellent yields. Furthermore, these highly substituted oxazole mols. showed excellent fluorescence properties and thus have enormous potential to be a new type of fluorescent probe for use in medicinal applications and materials science.

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