Month: November 2022

Zuo, Zongyan published the artcileSpiro-substitution effect of terfluorenes on amplified spontaneous emission and lasing behaviors, SDS of cas: 159-62-6, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices (2018), 6(16), 4501-4507, database is CAplus.

In order to investigate the inherent differences between spirofluorenes, two typical spirocycle models, spiro[fluorene-9,9′-xanthene] (SFX) and spirobiflourene (SBF), were chosen to construct four spiro-terfluorenes (DSFX-OSFX, DSBF-OSFX, DOSFX-SFX and DOSFX-SBF) to investigate the effect of spirocycle substitution on photophys. and stimulated emission properties. The terfluorenes have similar absorption and photoluminescence properties. While the DOSFX-SBF film displays the best ASE properties with a threshold of 1.81 μJ cm^-2, the lasing threshold of the 1-D DFB laser based on DOSFX-SBF is lowered to 0.85 μJ cm^-2. These results indicate that the type of spirofluorene has a dramatic influence on stimulated emission properties and spiro terfluorenes have potential applications in organic lasers.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 159-62-6. 159-62-6 belongs to naphthyridine, auxiliary class Other Aromatic Heterocyclic,Spiro, name is Spiro[fluorene-9,9′-xanthene], and the molecular formula is C13H15NO6S, SDS of cas: 159-62-6.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Liu, Kun Ming published the artcileIron catalyzed oxidative assembly of N-heteroaryl and aryl metal reagents using oxygen as an oxidant, COA of Formula: C22H18O2, the publication is Chemical Communications (Cambridge, United Kingdom) (2015), 51(6), 1124-1127, database is CAplus and MEDLINE.

An equivalent amount of N-heteroaryl and aryl Grignard or lithium reagents, after mediation by an equivalent of titanate, was facilely coupled to furnish N-heteroaryl-aryl compounds under the catalysis of FeCl₃/TMEDA at ambient temperature using oxygen as an oxidant. Most of the common N-heteroaryls were all good candidates, and thus provided a general, green and practical protocol for the flexible construction of various N-heteroaryl-aryl structures.

Chemical Communications (Cambridge, United Kingdom) published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, COA of Formula: C22H18O2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Wu, Haibo published the artcileEnantiorecognition ability of peptoids with α-chiral, aromatic side chains, Related Products of naphthyridine, the publication is Analyst (Cambridge, United Kingdom) (2011), 136(21), 4409-4411, database is CAplus and MEDLINE.

The enantiorecognition ability of oligomeric N-substituted glycines or “peptoids” with α-chiral, aromatic side chains was investigated by HPLC and ¹H NMR studies. For example, (S)-N-(1-phenylethyl)glycine (Nspe) was used as the monomer for the peptoids. The peptoids were synthesized with chloroacetyl chloride and (S)-α-phenylethylamine as submonomers in a homogeneous phase reaction. A series of peptoids with three to seven Nspe units were synthesized, followed by reaction with triethoxy (3-isocyanatopropyl)silane to generate the corresponding chiral monomers, and then, covalently bonded to the surface of spherical silica gel to obtain chiral stationary phases (CSPs 1-5). The chiral separation abilities of the CSPs for racemic BINOL and its derivatives were found to significantly depend on the chain length of the chiral selectors. The min. structural units required for resolving BINOL was found to be three. The enantioselectivities of of CSP-3 and CSP-4 were further evaluated by HPLC using 52 chiral analytes of wide structural variety. It was observed that possession of hydrogen bonding donors is a precondition for successful resolution on peptoid CSP.

Analyst (Cambridge, United Kingdom) published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C20H22ClN3O3, Related Products of naphthyridine.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Zhang, Li published the artcileActivated carbon functionalized with 1-amino-2-naphthol-4-sulfonate as a selective solid-phase sorbent for the extraction of gold(III), Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Microchimica Acta (2011), 174(3-4), 391-398, database is CAplus.

A new method for the separation, preconcentration, and determination of gold(III) ion in water samples was developed. It is based on the use of activated carbon that was modified with 1-amino-2-naphthol-4-sulfonate to yield a solid-phase sorbent. The exptl. conditions for adsorption were optimized. Gold(III) can be quant. adsorbed at pH 3, and adsorbed gold(III) can be completely eluted with 2.0 mL of a 2% solution of thiourea in 1 M HCl. The enrichment factor is 200, and the maximum adsorption capacity is 32 mg g^-1. Au was then determined by inductively coupled plasma optical emission spectrometry. The detection limit (3σ) is 0.26 μg L^-1, and the RSD is 3.1% (n = 8). Common potentially interfering ions do not interfere with the adsorption and determination of the analytes. The method displays selectivity, sensitivity and reproducibility, and was successfully applied to the determination of reference materials and water samples.

Microchimica Acta published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C13H16O2, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Cheng, Ming published the artcileA Perylenediimide Tetramer-Based 3D Electron Transport Material for Efficient Planar Perovskite Solar Cell, Quality Control of 159-62-6, the publication is Solar RRL (2017), 1(5), n/a, database is CAplus.

A perylenediimide (PDI) tetramer-based three dimensional (3D) mol. material, termed SFX-PDI4, has been designed, synthesized, and characterized. The low-lying HOMO and LUMO energy levels, high electron mobility and good film-formation property make it a promising electron transport material (ETM) in inverted planar perovskite solar cells (PSCs). The device exhibits a high power conversion efficiency (PCE) of 15.3% with negligible hysteresis, which can rival that of device based on PC₆₁BM. These results demonstrate that three dimensional PDI-based mol. materials could serve as high performance ETMs in PSCs.

Solar RRL published new progress about 159-62-6. 159-62-6 belongs to naphthyridine, auxiliary class Other Aromatic Heterocyclic,Spiro, name is Spiro[fluorene-9,9′-xanthene], and the molecular formula is C25H16O, Quality Control of 159-62-6.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Zhang, Ben published the artcilePreparation of two kinds of polyaspartic acid grafted copolymers and their scale inhibition performance, SDS of cas: 116-63-2, the publication is Huaxue Yanjiu (2013), 24(4), 420-424, database is CAplus.

Grafted copolymers polyaspartic acid/diethylenetriamine(denoted as PASP/DETA) and polyaspartic acid/1-amino-2-naphthol-4-sulfonic acid(denoted as PASP/1, 2, 4) were synthesized with urea, maleic anhydride, diethylenetriamine and 1-amino-2-naphthol-4-sulfonic acid as the starting materials. The chem. structure of as-synthesized products was analyzed by IR spectrometry; and their scale inhibition performance in industrial water was tested. Results show that PASP/DETA possesses excellent scale inhibition performance against Ca₃(PO₄)₂, and PASP/1, 2, 4possesses excellent scale inhibition performance against CaCO₃. When PASP/DETA and PASP/1, 2, 4 are combined at a concentration of 5 mg/L and 1.5 mg/ L, they have a scale inhibition efficiency of 95.4% against CaCO₃ and of 95.2% against Ca₃(PO₄)₂.

Huaxue Yanjiu published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C3H6O2, SDS of cas: 116-63-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Pitari, Giovanni Mario published the artcileExisulind and guanylyl cyclase C induce distinct antineoplastic signaling mechanisms in human colon cancer cells, SDS of cas: 59973-80-7, the publication is Molecular Cancer Therapeutics (2006), 5(5), 1190-1196, database is CAplus and MEDLINE.

The nonsteroidal anti-inflammatory drug sulindac is metabolized to sulindac sulfone (exisulind), an antineoplastic agent that inhibits growth and induces apoptosis in solid tumors. In colon cancer cells, the antineoplastic effects of exisulind have been attributed, in part, to induction of cyclic guanosine 3′,5′-monophosphate (cGMP) signaling through inhibition of cGMP-specific phosphodiesterases, which elevates intracellular cGMP, and novel expression of cGMP-dependent protein kinase (PKG) Iβ, the presumed downstream effector mediating apoptosis. Here, inhibition of proliferation and induction of cell death by exisulind was dissociated from cGMP signaling in human colon cancer cells. Accumulation of intracellular cGMP produced by an exogenous cell-permeant analog of cGMP or a potent agonist of guanylyl cyclase C yielded cytostasis without cell death. Surprisingly, the antiproliferative effects of induced cGMP accumulation were paradoxically less than additive, rather than synergistic, when combined with exisulind. Further, although exisulind induced expression of PKG Iβ, it did not elevate intracellular cGMP and its efficacy was not altered by inhibition or activation of PKG I. Rather, PKG I induced by exisulind may mediate desensitization of cytostasis induced by cGMP. Thus, cytotoxic effects of exisulind are independent of cGMP signaling in human colon cancer cells. Moreover, combination therapies, including exisulind and agents that induce cGMP signaling, may require careful evaluation in patients with colon cancer.

Molecular Cancer Therapeutics published new progress about 59973-80-7. 59973-80-7 belongs to naphthyridine, auxiliary class Immunology/Inflammation,COX, name is Sulindac sulfone, and the molecular formula is C20H17FO4S, SDS of cas: 59973-80-7.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Huang, Junmin published the artcileHighly efficient chromatographic resolution of α,α’-dihydroxybiaryls, Formula: C22H18O2, the publication is Organic Letters (2005), 7(26), 5821-5823, database is CAplus and MEDLINE.

Separation factors ≤115 were observed for the chromatog. resolution of many α,α’-dihydroxybiaryls with a single chiral stationary phase made from readily available amino acid derivatives The stationary phase works well for biphenyl-type compounds It works extremely well for larger bis-aromatic compounds, such as binaphthyl-type compounds

Organic Letters published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, Formula: C22H18O2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Zhao, Zujin published the artcileFluorescent, carrier-trapping dopants for highly efficient single-layer polyfluorene LEDs, Related Products of naphthyridine, the publication is Advanced Functional Materials (2007), 17(13), 2203-2210, database is CAplus.

Two fluorescent mols. with an alkynylanthracene core and pyrene end-cappers were synthesized and fully characterized. Carbazole moieties are introduced into one mol. at the C9 position of the fluorene linkages to enhance the hole-transport ability of the mol. and to reduce intermol. interactions. Both compounds exhibit high thermal stabilities and narrow energy bandgaps. Single-layer polymer light-emitting diodes (PLEDs) based on poly(9,9-dioctylfluorene) (PFO) doped with the synthesized compounds exhibit excellent performance. A PLED with 0.2% of dopant 7 had a high luminance efficiency of 10.7 ± 0.3 cd A^-1 as well as a brightness of 1400 cd m^-2 at a c.d. of 13 mA cm^-2, and a low turn on voltage (3.1 V) at a brightness of 10 cd m^-2. A maximum brightness of 20,500 ± 1400 cd m^-2 at 7 V was also measured. The high efficiency of the device’s performance is attributed to the good electron and hole trapping ability of the dopants, which possess suitable energy levels as compared to those of PFO.

Advanced Functional Materials published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C6H8N2O2, Related Products of naphthyridine.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Mu, Bing published the artcileSynthesis of symmetrical biaryls by cyclopalladated ferrocenylimine catalyzed ullmann-type coupling reaction, Related Products of naphthyridine, the publication is Henan Shifan Daxue Xuebao, Ziran Kexueban (2013), 41(5), 81-85, database is CAplus.

Cyclopalladated ferrocenylimine was tested as catalyst in the Ullmann-type coupling reaction in the presence of ¹Pr₂NEt as base and DMF as solvent under Ar conditions. The preparation of aromatic iodide comprises: diazotization reaction of substituted aniline with aqueous sodium nitrite solution in the presence of concentrated sulfuric acid to obtain substituted iodobenzene, adding with potassium iodide, placing in refrigerator for 2-3 h, adjusting with NaOH to alk., extracting with dichloromethane, drying with anhydrous magnesium sulfate. It offered excellent yields in the coupling reaction of electronically and structurally diverse aryl iodides. Herein we have developed a simple, efficient way to synthesize sym. biaryls.

Henan Shifan Daxue Xuebao, Ziran Kexueban published new progress about 2960-93-2. 2960-93-2 belongs to naphthyridine, auxiliary class Naphthalene,Ether,Other MOF ligands,Organic ligands for MOF materials, name is 2,2′-Dimethoxy-1,1′-binaphthalene, and the molecular formula is C22H18O2, Related Products of naphthyridine.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem