Tag: M.W=200-250

Park, Lee Soon published the artcileSynthesis of conjugated copolymers containing biphenyl group and their electroluminescence characteristics, Quality Control of 146370-51-6, the publication is Kongop Hwahak (2000), 11(4), 439-445, database is CAplus.

Poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) and poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene-co-1,1′-biphenyl-4,4′-xylene vinylene) [poly(MEHPV-co-BPV)] with a different feed ratio of biphenyl group in the main chain were synthesized by α-elimination reaction. Poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene-alt-1,1′-biphenyl-4,4′-xylene vinylene) [poly(MEHPV-alt-BPV)], which has alternating repeat unit, and poly(1,8-octanedioxy-2-methoxy-,4-phenylene-1,2-ethenylene-,1′-biphenyl-4,4′-xylene-1,2-ethenylene-3-methoxy-1,4- phenylene)[poly(BFMP8-BPV)] and poly(1,12-dodecanedioxy-2-ethoxy-1,4-phenylene-1,2-ethenylene 1,1′-biphenyl-4,4′-xylene-1,2-ethene-3-thoxy-1,4-phenylene) [poly(BFMP12-BPV)] containing both conjugated and non-conjugated group in the main chain were synthesized by the Honer-Emmons reaction Single layer type light-emitting diode (LED)s were fabricated utilizing the prepared polymers as the emitting layer and their electrooptical properties were examined The solubility of poly(MEHPV-co-BPV)s in common organic solvents decreased rapidly with the increasing amount of BPV units in the copolymer. Emission spectrum of poly(MEHPV-co-BPV)s had two peaks corresponding to MEHPV (586 nm) and BPV (469, 495 nm) moiety, resp. However, LED fabricated with poly(MEHPV-alt-BPV) showed relatively sharp single peak (544 nm) in the middle of the two peaks.

Kongop Hwahak published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Quality Control of 146370-51-6.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Park, Lee Soon published the artcileSynthesis of conjugated polymers containing anthracene moiety and their electro-optical properties, HPLC of Formula: 146370-51-6, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2000), 38(17), 3173-3180, database is CAplus.

Both fully conjugated polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylene vinylene-alt-9,10-anthrylene vinylene] [poly(MEHPV-AV)] and conjugated/non-conjugated block copolymers poly(alkanedioxy-2-methoxy-1,4-phenylene-1,2-ethenylene-9,10-anthrylene-1,2-ethenylene-3-methoxy-1,4-phenylene)[poly(BFMPx-AV), (x = 4, 8, and 12)] were synthesized by Horner-Emmons reaction utilizing potassium tert-butoxide. Of these synthesized polymers poly(BFMP4-AV) and poly(BFMP8-AV), which has four and six methylene groups as solubility spacer in the main chain exhibited liquid crystalline to isotropic transition in addition to the two first order transitions. Light-emitting diode (LED)s made from the organic solvent soluble poly(BFMP12-AV) as emitting layer showed blue shift in the emission spectrum compared to the one made from fully conjugated poly(MEHPV-AV). Although poly(BFMP12-AV) had higher barrier to the electron injection from cathode than poly(MEHPV-AV), the luminance efficiency of LED made from poly(BFMP12-AV) was about 25 times higher than the one made from poly(MEHPV-AV), which had fully conjugated structure. LEDs fabricated by both poly(BFMP12-AV) and poly(MEHPV-AV) exhibited Stoke’s shift in the range of 155 to 168 nm from the absorption maximum due to the excimer formation between the ground and excited state anthracene groups.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, HPLC of Formula: 146370-51-6.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Hoque, Emdadul Md published the artcileRemarkably Efficient Iridium Catalysts for Directed C(sp²)-H and C(sp³)-H Borylation of Diverse Classes of Substrates, COA of Formula: C11H17BO3S, the publication is Journal of the American Chemical Society (2021), 143(13), 5022-5037, database is CAplus and MEDLINE.

Here we describe the discovery of a new class of C-H borylation catalysts and their use for regioselective C-H borylation of aromatic, heteroaromatic, and aliphatic systems. The new catalysts have Ir-C(thienyl) or Ir-C(furyl) anionic ligands instead of the diamine-type neutral chelating ligands used in the standard C-H borylation conditions. It is reported that the employment of these newly discovered catalysts show excellent reactivity and ortho-selectivity for diverse classes of aromatic substrates with high isolated yields. Moreover, the catalysts proved to be efficient for a wide number of aliphatic substrates for selective C(sp³)-H bond borylations. Heterocyclic mols. are selectively borylated using the inherently elevated reactivity of the C-H bonds. A number of late-stage C-H functionalization have been described using the same catalysts. Furthermore, we show that one of the catalysts could be used even in open air for the C(sp²)-H and C(sp³)-H borylations enabling the method more general. Preliminary mechanistic studies suggest that the active catalytic intermediate is the Ir(bis)boryl complex, and the attached ligand acts as bidentate ligand. Collectively, this study underlines the discovery of new class of C-H borylation catalysts that should find wide application in the context of C-H functionalization chem.

Journal of the American Chemical Society published new progress about 1073339-22-6. 1073339-22-6 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic Acids,Boronic acid and ester, name is 2-(4-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, COA of Formula: C11H17BO3S.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Chernysheva, Maria V. published the artcileThe S ··· Hal and Se ··· Hal chalcogen bonding in a series of thiourea, selenourea and their derivatives, SDS of cas: 14807-75-1, the publication is Journal of Solid State Chemistry (2021), 121759, database is CAplus.

The chalcogen bonding (ChB) in a series of thiourea, selenourea and their derivatives has been investigated in the present paper. Thus, selenourea and dimethylselenourea undergo dimerization and trimerization processes in the presence of various halogen species (1-5). Selenourea and dimethylselenourea form trimers 3-4 in the presence of lighter halogens (chlorine and bromine) through Se···Se chalcogen bonding. When moving to heavier halogen (iodine), the dimers 1-2 are formed. Thiourea and its derivatives also tend to make very strong S···S bonds and form dimers in the case of lighter halogens chlorine and bromine (compounds 6-7). However, the monomers separated by the iodine species are formed upon interaction with iodine via very strong S···I bonding (compounds 9-12). Furthermore, among all the crystal structures of 1-12, only iodine cations I+ in 10 and 12 act as electron d. acceptors, while in the remaining compounds 1-9 and 11 halogen species act as electron d. donors.

Journal of Solid State Chemistry published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C2H8Cl2N4S2, SDS of cas: 14807-75-1.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Hirao, Ichiro published the artcileCondensation of anisyl alcohol or benzyl alcohol with aromatic amines, Synthetic Route of 52818-63-0, the publication is Yakugaku Zasshi (1954), 853-5, database is CAplus.

A mixture of 7 g. p-MeOC₆H₄CH₂OH (I), 5 g. 2-aminopyridine (II), 20 g. xylene, and 4 g. KOH refluxed 21 hrs., extracted with 10% HCl, KOH added to pH 7, and the product recrystallized from dilute MeOH give 8.9 g. (80%) 2-(p-methoxybenzylamino)pyridine (III), m. 108°, or 5.5 g. I, 3.5 g. II, 8 g. PhMe, and 4 g. KOH refluxed 12 hrs. and the product treated as above give 4.8 g. (62%) III, m. 123-4°. I (7 g.), 4.7 g. PhNH₂, 20 g. xylene, and 4 g. KOH refluxed 21 hrs., and the product precipitated with 10% HCl, dissolved in KOH, and recrystallized from MeOH gives 5 g. (51%) p-MeOC₆H₄CH₂NHPh, m. 63-4°. Similarly, 20 g. PhCH₂OH, 6 g. 2-aminopyrimidine, 40 g. PhMe, and 7 g. KOH refluxed 10 hrs. give 16 g. (44%) 2-benzylaminopyrimidine, m. 79-81°; 8 g. PhCH₂OH, 6 g. 2-H₂NC₅H₄N, 4 g. PhMe, and 15 g. PhMe refluxed 13 hrs. give 11 g. (81%) 2-PhCH₂NHC₅H₄N, m. 95-6°; 10.8 g. PhCH₂OH, 9.3 g. PhNH₂, 40 g. xylene, and 8 g. KOH refluxed 21 hrs. give 1.47 g. PhCH₂NHPh.HCl, m. 214-5°.

Yakugaku Zasshi published new progress about 52818-63-0. 52818-63-0 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Benzene,Ether, name is N-(4-Methoxybenzyl)pyridin-2-amine, and the molecular formula is C13H14N2O, Synthetic Route of 52818-63-0.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Yang, Chunhe published the artcilePolymer light-emitting electrochemical cells with 1-methoxy-4-(2-ethylhexyloxy)benzene as salt carrier, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, the publication is Synthetic Metals (2001), 124(2-3), 449-453, database is CAplus.

The electro-active, 1-methoxy-4-(2-ethylhexyloxy)benzene (MEH-benzene) is employed as ion carrier and redox shuttle in the polymer light-emitting electrochem. cell (LEC). The corresponding LECs with MEH-PPV can be driven within 10 V without failure. The LEC characteristics are clearly shown by the current-voltage curves and the ac impedance spectroscopy.

Synthetic Metals published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C7H5Br2F, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Lue, Xiaodan published the artcileSynthesis and photoluminescence properties of poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene-co-styrene) copolymers, COA of Formula: C15H24O2, the publication is Polymer Science, Series A (2011), 53(5), 403-408, database is CAplus.

A series of conjugated and non-conjugated copolymers of poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene-co-styrene) were synthesized via a typical chlorine precursor route. The obtained copolymers were characterized by FTIR spectra, UV-Vis spectra, ¹H NMR, and GPC. The results obtained indicated that the introduction of non-conjugated PS segments in MEH-PPV led to the interruption of conjugation structure and shortened the effective conjugated length, by which the optical properties of the conjugated polymer can be adjusted.

Polymer Science, Series A published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, COA of Formula: C15H24O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Vasiliev, A. D. published the artcileCrystal structure of bis(α,α’-dithio-bis(formamidinium)) bis(μ₂-chloro)hexachlorodimercurate(II), SDS of cas: 14807-75-1, the publication is Russian Journal of Inorganic Chemistry (2013), 58(11), 1298-1301, database is CAplus.

The crystal and mol. structure of bis(α,α’-dithio-bis(formamidinium)) bis(μ₂-chloro)hexachlorodimercurate(II) C₄H₁₆Hg₂Cl₈N₈S₄ (I), where α,α’-dithio-bis(formamidine) is C₂H₆N₄S₂, was solved. Crystals are monoclinic, a 8.6417(6), b 14.648(1), c 10.2111(8) Å, β 104.949(1)°, V = 1248.8(2) ų, space group P2₁/n, Z = 4. The crystal structure is built of HgCl₄^2- ions linked via inversion centers into [Hg₂Cl₈]^4- pairs and C₂H₈N₄S₂²⁺ cations. [Hg₂Cl₈]^4- anions and C₂H₈N₄S₂²⁺ cations form alternating layers linked by N-H^…Cl H bonds into a framework structure.

Russian Journal of Inorganic Chemistry published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C18H24N6O6S4, SDS of cas: 14807-75-1.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Ashok Kumar, Sangeetha published the artcileStable and color tunable MEH-PPV/PMMA polymer blends for light-emitting applications, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, the publication is Chemical Physics Letters (2021), 138462, database is CAplus.

Light Emitting Polymers (LEPs) have gained attention in optoelectronics. However, stability and regulation of emission color remain a challenge. This study aims to overcome the challenge by formulating a Polymer Blend (PB) which consists of a LEP – poly [2-methoxy,5-(2-ethylhexyloxy)1,4-phynylenevinylene (MEH-PPV) and a non-conjugated polymer – poly(Me methacrylate) (PMMA). A simple approach of in situ polymerization of the non-conjugated polymer in the MEH-PPV solution leads to alteration of size of the MEH-PPV polymer chain and modified the emission color from red-orange to bluish-green. The barrier properties of PMMA improve the stability of PB in an ambient environment with unnoticeable luminescence loss. This type of PB shall find application in Organic Light-Emitting Devices.

Chemical Physics Letters published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Elacqua, Elizabeth published the artcilePoly(arylenevinylene)s through Ring-Opening Metathesis Polymerization of an Unsymmetrical Donor-Acceptor Cyclophane, Computed Properties of 146370-51-6, the publication is Angewandte Chemie, International Edition (2019), 58(28), 9527-9532, database is CAplus and MEDLINE.

Reported are well-defined donor-acceptor alternating copolymers prepared using ring-opening metathesis polymerization (ROMP). Unsym. cyclophanedienes comprising electron-donating (4-methoxy-1-(2-ethylhexyl)oxy)benzene (MEH) and electron-accepting benzothiadiazole (BT) rings were synthesized from the corresponding [3.3]dithiaparacyclophanes. ROMP of the strained unsym. and “electronically-ambiguous” cyclophanedienes proceeded in a controlled manner in the presence of either Hoveyda-Grubbs II or Grubbs II initiator in wake of both steric and electronic encumbrance. The resulting polymers, comprising alternating BT and MEH-PPV units, are achieved in mol. weights exceeding 20k with D values ranging from 1.1-1.4. The living nature of the polymerization is verified through the formation of rod-coil and rod-rod block copolymers. Our strategy to develop previously unrealized polymers from functional building blocks featuring a locked-in D-A unit is significant in a field striving to achieve well-defined and sequence-specific materials.

Angewandte Chemie, International Edition published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Computed Properties of 146370-51-6.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem