Tag: 200-300

On October 31, 2006, Yang, Yong; Qiao, Juan; Li, Yinkui; Qiu, Yong published an article.Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene The title of the article was Ultrasonic synthesis of poly[2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene]. And the article contained the following:

Poly[2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) is a typical example of solution processable conjugated polymers for polymeric light emitting diodes application, which shows good solubility in common organic solvents. However, gelation or micro-gelation always occurs during the polymerization process. Herein, we report the synthesis of fully soluble MEH-PPV by ultrasonic irradiation method. The raw material was 4-methoxyphenol, and ultrasonic irradiation method was used in the etherification, bromomethylation and polymerization The polymer is prepared from the bis-bromomethyl monomer through the Gilch route. Compared with the conventional mech. stirring, ultrasonic irradiation method has shown great advantages with respect to the shorter reaction time, lower reaction temperature, higher yields and higher mol. weight (Mn) of MEH-PPV. The optimized reaction conditions including reaction solvent, temperature, and time, were determined for the related etherification, bromomethylation and polymerization with ultrasonic method. Especially, using ultrasonic method, the gelation in the polymerization had been overcome. MEH-PPV obtained was fully soluble in THF and chloroform and no gel or micro-gel existed. The structures of the intermediate products and MEH-PPV were determined by IR and 1H-NMR. It was found the MEH-PPV synthesized by ultrasonic irradiation processes had higher luminescence quantum efficiency than that by mech. stirring. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene

The Article related to polyphenylenevinylene ultrasonic irradiation gelation luminescence quantum efficiency, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On February 1, 2006, Huo, Lijun; Hou, Jianhui; He, Chang; Han, Minfang; Li, Yongfang published an article.HPLC of Formula: 146370-51-6 The title of the article was Synthesis, characterization and photovoltaic properties of poly{[1′,4′-bis-(thienyl-vinyl)]-2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene}. And the article contained the following:

A new conjugated polymer, poly{[1′,4′-bis-(thienyl-vinyl)]-2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene} (PTVMEH-PPV) was synthesized via Grignard polymerization The polymer is soluble in common organic solvents such as chloroform and THF, and possesses adequate thermal stability (Td > 246 °C). The absorption spectrum of PTVMEH-PPV film shows a broader absorption peak covering the wavelength range from 380 nm to 620 nm, which is red-shifted and broadened in comparison with that of MEH-PPV. The onset oxidation potential of the polymer is 0.12 V vs. Ag/Ag+, ca. 0.2 V lower than that of MEH-PPV. The band gap of the polymer measured by cyclic voltammetry is 1.82 eV, which basically agrees with that obtained from the onset wavelength of the absorption spectra. Polymer solar cell was fabricated based on the blend of PTVMEH-PPV and PCBM with a weight ratio of 1:1. The device shows the maximum external quantum efficiency of 14% at ca. 520 Nm, an open circuit voltage of 0.67 V and a power conversion efficiency of 0.32% under the illumination of AM1.5, 80 mW/cm2. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).HPLC of Formula: 146370-51-6

The Article related to polyphenylenevinylene polythiophene preparation polymer photovoltaic solar cell, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.HPLC of Formula: 146370-51-6

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Anderson, Nichole; Bagge, Whitney; Webber, Cindy; Zarras, Peter; Davis, Matthew C. published an article in 2008, the title of the article was Procedure for the rapid synthesis of the monomer 1,4-bis(chloromethyl)-2-(2-ethylhexyloxy)-5-methoxybenzene.HPLC of Formula: 146370-51-6 And the article contains the following content:

The alkylation of 4-methoxyphenol with 2-ethylhexyl bromide was accelerated by using potassium tert-butoxide in DMF. Subsequent chloromethylation occurred quickly using acetic acid as a cosolvent to give the monomer (for MEH-PPV) in 61% overall yield on a 2-mol scale. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).HPLC of Formula: 146370-51-6

The Article related to chloromethylated ethylhexyloxymethoxybenzene monomer mehppv preparation, Chemistry of Synthetic High Polymers: Monomers and Reagents Used In Polymerization and other aspects.HPLC of Formula: 146370-51-6

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Ether – Wikipedia,
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On November 30, 2016, Duan, Ying; Yang, Yanliang; Dai, Xiaoyu; Li, Dongmi published an article.Recommanded Product: 157869-15-3 The title of the article was Selective arylation/annulation cascade reactions of 2-alkynylanilines with diaryliodonium salts. And the article contained the following:

An efficient Cu catalyzed selective arylation/annulation cascade reaction of 2-alkynylanilines with diaryliodonium salts was developed. This reaction was selective to N-arylation instead of C-arylation, which provides a simple synthetic method for N-aryl indoles. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).Recommanded Product: 157869-15-3

The Article related to alkynylaniline diaryliodonium salt selective arylation annulation, Physical Organic Chemistry: Ring Formation, Cleavage, Enlargement, and Contraction and other aspects.Recommanded Product: 157869-15-3

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Ether – Wikipedia,
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Thavornsin, Nopparat; Sukwattanasinitt, Mongkol; Wacharasindhu, Sumrit published an article in 2014, the title of the article was Direct synthesis of poly(p-phenyleneethynylene)s from calcium carbide.Synthetic Route of 146370-51-6 And the article contains the following content:

An efficient method for the preparation of poly(p-phenyleneethynylene)s (PPEs) from direct coupling reactions between aryl diiodides and the inexpensive chem. feedstock calcium carbide was developed. A variety of PPEs can be prepared in high yields (71-93%) with the d.p. between 36 and 128, offering fluorescence quantum efficiencies in the range of 0.34-0.71. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Synthetic Route of 146370-51-6

The Article related to aryl diiodide calcium carbide copolymer preparation polyacetylene, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Synthetic Route of 146370-51-6

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Ether – Wikipedia,
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On July 13, 2004, Cho, Nam Sung; Hwang, Do-Hoon; Jung, Byung-Jun; Lim, Eunhee; Lee, Jaemin; Shim, Hong-Ku published an article.Computed Properties of 146370-51-6 The title of the article was Synthesis, characterization, and electroluminescence of new conjugated polyfluorene derivatives containing various dyes as comonomers. And the article contained the following:

Four new fluorene-based alternating polymers (PFR1-S, PFR2-S, PFR3-S, and PFR4-S) containing different comonomers, i.e., 2,5-bis{2-(4′-bromophenyl)-1-cyanovinyl}-2-(2′-ethylhexyloxy)-5-methoxybenzene (R1), 2,5-bis{2-(4′-bromophenyl)-2-cyanovinyl}-2-(2′-ethylhexyloxy)-5-methoxybenzene (R2), 2,5-bis{2-(4′-bromothienyl)-1-cyanovinyl}-2-(2′-ethylhexyloxy)-5-methoxybenzene (R3), and 2,5-bis{2-(4′-bromothienyl)-2-cyanovinyl}-2-(2′-ethylhexyloxy)-5-methoxybenzene (R4), were designed, synthesized, and characterized. These polymers were thermally stable and readily soluble in common organic solvents. Single layer LED devices fabricated from these polymers emitted bluish green to pure red light. The color of the light emitted by the homopolymer, poly(9,9-dioctylfluorene-2,7-diyl) (PDOF), can be tuned by incorporating R1, R2, R3, and R4 comonomers, which have narrower band gaps. The absorption and emission maxima of the copolymers varied according to the position of the cyano group in the vinylene unit (α- or β-position) and the type of incorporated aromatic group (thiophene or phenylene). Notably, PFR4-S, prepared from R4 and 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9′-dioctylfluorene, showed pure red emission (CIE coordinate values x, y = 0.66 and 0.33, resp.) that is almost identical to the standard red (0.66, 0.34) demanded by the National Television System Committee. PFR3-S also exhibited pure red emission (chromaticity values x, y = 0.63 and 0.38, resp.), and its maximum luminance and maximum external quantum efficiency were approx. 3100 cd/m2 at 6 V and 0.46% at 4 V, resp. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Computed Properties of 146370-51-6

The Article related to conjugated alternating polymer fluorene derivative dye comonomer, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Computed Properties of 146370-51-6

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On June 25, 2009, Ikeda, Koichi; Kouzai, Hiroaki published an article.SDS of cas: 146370-51-6 The title of the article was Synthesis of polyazomethine having naphthalene structure in the main chain. And the article contained the following:

We have synthesized aldehyde compounds with branched methylene groups by a LiCl catalyst. The number-average mol. weight and the weight-average mol. weight of the polymer, determined by MS, were 6.5 × 103 and 6.5 × 103, resp. The synthesized polymer showed a photoluminescence peak at 447 nm. However, the fluorescent strength did not show enough fluorescence. The TGA measurements of the polymer, showed that the polymer had a high thermal stability with a 10% thermal weight loss initiation temperature of 390°. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).SDS of cas: 146370-51-6

The Article related to polyazomethine naphthalene thermal stability photoluminescence, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.SDS of cas: 146370-51-6

Referemce:
Ether – Wikipedia,
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On February 28, 2009, Kim, Jung-Sik; Heo, Jun; Kang, Pengtao; Kim, Jin Hak; Jung, Sung Ouk; Kwon, Soon-Ki; Kim, Un-Kyung; Kim, Yun-Hi published an article.Recommanded Product: 146370-51-6 The title of the article was Synthesis and characterization of organic light-emitting copolymers containing naphthalene. And the article contained the following:

Conjugated PPV-derived block copolymers containing 2-ethylhexyloxynaphthalene unit were synthesized and characterized in this study. The resulting polymers were soluble in common organic solvents and showed good thermal stabilities. The weight-average mol. weights (Mw) of the copolymers ranged from 246,000 to 475,000 with PDIs of 1.3∼2.1. The optical properties of these polymers, measured both in a chloroform solution and on a film, showed a maximum absorption at 405∼476 nm for Copolymers I∼VIII. In the PL spectra, Copolymers I∼VIII showed maximum peaks at 510∼566 nm. The HOMOs, LUMOs and band gaps of the PPV derivatives of Copolymers I∼VIII were 5.30∼5.77, 3.04∼3.24, and 2.5∼2.2 eV, resp. The multi-layered, light-emitting diodes of ITO/PEDOT/copolymers/LiF/Al exhibited turn-on voltages of 6∼2.5 V. Copolymer VIII exhibited the maximum brightness of 3657 cd/m2. Particularly, Copolymer VII, with an identical composition of MEH-PPV and naphthalene-PPV, showed a maximum luminance efficiency and power efficiency of 2.63 cd/A and 1.06 lm/W, resp. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Recommanded Product: 146370-51-6

The Article related to electroluminescent device thermal stability homo lumo oled, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Recommanded Product: 146370-51-6

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Ether – Wikipedia,
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On February 22, 2017, Li, Zhengming; Xie, Yongtao; Zhou, Sha published a patent.Recommanded Product: 53136-21-3 The title of the patent was Process for the preparation of sulfoximine compounds from thioether. And the patent contained the following:

The invention relates to one step process for the preparation of sulfoximine compounds of formula R1SO(NH)R2 [R1, R2 = C1-20alkyl, (un)substituted aryl, (un)substituted alkenyl and alkynyl] via oxidation of R1SR2 in the presence of ammonia source (ammonium chloride, ammonium nitrate, etc.). For example, S-methyl-S-phenylsulfoxime was prepared via oxidation of Me Ph sulfide with iodobenzene diacetic acid in the presence of ammonium acetate. The experimental process involved the reaction of Benzyl(4-bromophenyl)sulfane(cas: 53136-21-3).Recommanded Product: 53136-21-3

The Article related to sulfoximine preparation thioether oxidation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Sulfoxides and Sulfones and other aspects.Recommanded Product: 53136-21-3

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Shankar, Jaya Seeli; Kumar, Sangeetha Ashok; Periyasami, Bhuvana K.; Nayak, Sanjay K. published an article in 2020, the title of the article was Mechanism of photoinduced charge transfer at MEH-PPV and titanium dioxide nanoparticle interface.Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene And the article contains the following content:

In this study, we investigated mechanisms of photoinduced electron transfer from a conjugated polymer poly(2-methoxy-5-(2-ethylhexyloxy)1,4-phenylenevinylene) (MEH-PPV) to titanium dioxide (TiO2) nanoparticles (acceptor) through steady-state photoluminescence (PL) spectroscopy. Since mixed phase TiO2 has better photocatalytic compared to single phase, it is an efficient charge separation process during photoexcitation of polymer nanocomposites by incorporating the mixed phase TiO2 nanoparticles into the MEH-PPV polymer matrix through in situ polymerization Structural characterization revealed only phys. interaction between the polymer matrix and dispersed nanoparticles. The absorbance spectra of nanocomposites also indicated the absence of ground state complex formation. Luminescence quenching of polymer nanocomposites compared to pristine MEH-PVV signifies the charge transfer taking place at the MEH-PPV/TiO2 interfaces. Thus, the MEH-PPV/ mixed phase TiO2 nanocomposite serves as an active layer for photovoltaic application. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene

The Article related to polymethoxyethylhexyloxyphenylenevinylene titanium dioxide nanoparticle interface photoinducing charge transfer, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem