Category: naphthyridine

Sun, Ping published the artcileEvaluation of aromatic-derivatized cyclofructans 6 and 7 as HPLC chiral selectors, Name: 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Analyst (Cambridge, United Kingdom) (2011), 136(4), 787-800, database is CAplus and MEDLINE.

The two best aromatic-functionalized cyclofructan chiral stationary phases, R-naphthylethyl-carbamate cyclofructan 6 (RN-CF6) and dimethylphenyl-carbamate cyclofructan 7 (DMP-CF7), were synthesized and evaluated by injecting various classes of chiral analytes. They provided enantioselectivity toward a broad range of compounds, including chiral acids, amines, metal complexes, and neutral compounds It is interesting that they exhibited complementary selectivities and the combination of two columns provided enantiomeric separations for 43% of the test analytes. These extensive chromatog. results provided useful information about method development of specific analytes, and also gave some insight as to the enantioseparation mechanism.

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 C5H10N2OS, Name: 2,2′-Dimethoxy-1,1′-binaphthalene.

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

Chu, Zengze published the artcileSynthesis of Dendritic Oligo-Spiro(fluorene-9,9′-xanthene) Derivatives with Carbazole and Fluorene Pendants and their Thermal, Optical, and Electroluminescent Properties, SDS of cas: 159-62-6, the publication is Macromolecular Rapid Communications (2009), 30(20), 1745-1750, database is CAplus and MEDLINE.

Two novel spiro-configured ter(arylene-ethynylene) derivatives, TSF-Cz and TSF-F, were designed and synthesized using spiro(fluorene-9,9′-xanthene) (SFX) as building blocks, introducing a hole-transporting carbazole and a fluorene chromophore as the peripheral functional group into the backbone through an O atom. The 2 well-defined oligomers possess good solubility, film-forming quality, and high T_g‘s at 140 and 126°, resp. These oligomers exhibit blue photoluminescence (PL) emission both in solution and solid states. The double-layered devices fabricated using the 2 materials as the emitter show a sky-blue emission with a brightness and a current efficiency of 7,613 cd m^-2 and 1.11 cd A^-1 for TSF-Cz, and 1,507 cd m^-2 and 0.36 cd A^-1 for TSF-F, resp.

Macromolecular Rapid Communications 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, SDS of cas: 159-62-6.

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

Chen, Qi published the artcileSpiro(fluorene-9,9′-xanthene)-Based Porous Organic Polymers: Preparation, Porosity, and Exceptional Hydrogen Uptake at Low Pressure, Name: Spiro[fluorene-9,9′-xanthene], the publication is Macromolecules (Washington, DC, United States) (2011), 44(20), 7987-7993, database is CAplus.

Preparation and sorption properties of spiro(fluorene-9,9′-xanthene)-based porous organic polymers (SPOPs) are reported. Using a same linker monomer, the micropore size and sp. surface area in SPOPs are tunable by variation of the structure of core building blocks. According to the obtained nitrogen physisorption isotherms, the Brunauer-Emmett-Teller sp. surface area for these polymers varies between 750 and 1020 m²/g. Copolymer SPOP-3 containing spiro(fluorene-9,9′-xanthene) and spirobifluorene with 1:1 ratio, prepared by Suzuki coupling polymerization, possesses 2.22 weight% hydrogen adsorption capacity at 1.0 bar and 77 K, which not only is the exceptional uptake capacity for hydrogen at low pressure among the best reported results for organic polymers but also can be competitive with other kinds of porous materials such as activated carbons and metal-organic frameworks.

Macromolecules (Washington, DC, United States) 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, Name: Spiro[fluorene-9,9′-xanthene].

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

Wang, Dinghui published the artcileA Fluorescent Linear Conjugated Polymer Constructed from Pillararene and Anthracene, Formula: C18H10, the publication is Molecules (2022), 27(10), 3162, database is CAplus and MEDLINE.

Over the past few years, conjugated polymers (CPs) have aroused much attention owing to their rigid conjugated structures, which can perform well in light harvesting and energy transfer and offer great potential in materials chem. In this article, we fabricate a new luminescent linear CP p(P[5](OTf)₂-co-9,10-dea) via the Sonogashira coupling of 9,10-diethynylanthracene and trifluoromethanesulfonic anhydride (OTf) modified pillar[5]arene, generating enhanced yellow-green fluorescence emission at around 552 nm. The reaction condition was screened to get a deeper understanding of this polymerization approach, resulting in an excellent yield as high as 92% ultimately. Besides the optical properties, self-assembly behaviors of the CP in low/high concentrations were studied, where interesting adjustable morphologies from tube to sheet were observed In addition, the fluorescence performance and structural architecture can be disturbed by the host-guest reorganization between the host CP and the guest adiponitrile, suggesting great potential of this CP material in the field of sensing and detection.

Molecules 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 C17H14F3N3O2S, Formula: C18H10.

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

Lin, Ching-Yao published the artcilePreparation and Spectral, Electrochemical, and Photovoltaic Properties of Acene-Modified Zinc Porphyrins, Recommanded Product: 9,10-Diethynylanthracene, the publication is Journal of Physical Chemistry C (2010), 114(1), 687-693, database is CAplus.

Acene-modified Zn porphyrins (I; E = 1,4-phenylene, 1,4-naphthalenediyl, 9,10-anthacenediyl, 5,12-tetracenediyl, 6,13-pentacenediyl, denoted as LAC-1 to LAC-5, resp.) were prepared to study their absorption spectra, electrochem. properties, and photovoltaic properties. For the absorption spectral changes in THF, porphyrin B bands are red shifted and broadened from 449 to 501 nm for LAC-1 to LAC-3, showing the effect of addnl. π-conjugation. In contrast, the B bands of LAC-4 and LAC-5 are blue-shifted. The tetracenyl group of LAC-4 gives rise to absorption bands in between B and Q bands. However, the Q bands of LAC-1 to LAC-5 are systematically broadened and red shifted from 629 to 751 nm. By comparison, the absorption bands of LAC porphyrins on TiO₂ films are broadened and slightly shifted. Fluorescence emission maxima of LAC porphyrins in THF are also systematically red shifted from LAC-1 to LAC-5. Cyclic voltammetry experiments in THF/TBAP show that the 1st reductions are systematically pos.-shifted from -1.16 to -0.85 V vs. SCE for LAC-1 to LAC-5, indicating the effect of increasing π-conjugation. As for the performance of DSSCs using LAC porphyrins, the overall efficiencies are LAC-1 (2.95%), LAC-2 (3.31%), LAC-3 (5.44%), LAC-4 (2.82%), and LAC-5 (0.10%). Overall efficiency of a LAC-3-sensitized solar cell is nearly twice of that of a LAC-1-sensitized solar cell and is âˆ?1% overall efficiency of N719-sensitized solar cells under the same exptl. conditions. The conversion efficiency of incident photons to current (IPCE) experiments shows that the broadened absorption bands of LAC-3 effectively minimizes the gap between B and Q bands, contributing to the improved DSSC performance. The very poor performance of LAC-5 probably is caused by rapid nonradiative relaxation of the mol. in the singlet excited state.

Journal of Physical Chemistry C 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 C18H10, Recommanded Product: 9,10-Diethynylanthracene.

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

Feng, Li-Heng published the artcileHighly selective recognition of monosaccharide based on two-component system in aqueous solution, Computed Properties of 2960-93-2, the publication is Tetrahedron (2011), 67(18), 3175-3180, database is CAplus.

A highly selective switch for D-fructose was formed by water-soluble conjugated polymer (PP-S-BINOL) and tetraboronic acid-functionalized benzyl viologen (ToBV). The two-component system showed a high selectivity and sensitivity only for D-fructose in familiar D-monosaccharides. The high selectivity of the sensing system for D-fructose may be depended on stable pyranose ester form of D-fructose with ToBV. A desirable linear response of the sensing system to low concentrations of D-fructose (<10.0 mM) was observed with 0.9936 linear dependent coefficient at pH 7.4.

Tetrahedron 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, Computed Properties of 2960-93-2.

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

Zimmerman, Steven C. published the artcileAnalysis of Amidinium Guest Complexation by Comparison of Two Classes of Dendrimer Hosts Containing a Hydrogen Bonding Unit at the Core, Synthetic Route of 14903-78-7, the publication is Journal of the American Chemical Society (1998), 120(9), 2172-2173, database is CAplus.

Host-guest complexation studies were performed using two isostructural series of hosts to determine the accessibility and nanoenvironment of dendrimer cores. Association constants (K_assoc) were measured by ¹H NMR for the hydrogen bonded complexes formed between hosts and guests 3,5-di-tert-Bu benzamidinium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate and 3,5-bis(3′,5′-di-tert-butylphenylacetylene) tetrakis[3,5-bis(trifluoromethyl)phenyl]borate in 10% acetonitrile-d₃/chloroform-d. The results indicated site-specific binding between the dendrimer core and small guest mols. The on-off rates were fast on the NMR time scale even for complexes formed from high generation number hosts. Strikingly, the two series of dendritic hosts exhibited very similar complexation strengths even though the rigidity and polarity of the dendrimer interiors were quite different.

Journal of the American Chemical Society published new progress about 14903-78-7. 14903-78-7 belongs to naphthyridine, auxiliary class 6.6_Aromatics,Naphthyridines, name is 2,7-Dimethyl-1,8-naphthyridine, and the molecular formula is C17H14N2O2, Synthetic Route of 14903-78-7.

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

Xu, Linxian published the artcileA Conjugated Polymeric Supramolecular Network with Aggregation-Induced Emission Enhancement: An Efficient Light-Harvesting System with an Ultrahigh Antenna Effect, Product Details of C18H10, the publication is Angewandte Chemie, International Edition (2020), 59(25), 9908-9913, database is CAplus and MEDLINE.

Superior artificial light-harvesting systems (ALHSs) require exceptional capacity in harvesting light and transferring energy. In this work, we report a novel strategy to build ALHSs with an unprecedented antenna effect (35.9 in solution and 90.4 in solid film). The ALHSs made use of a conjugated polymeric supramol. network (CPSN), a crosslinked network obtained from the self-assembly of a pillar[5]arene-based conjugated polymeric host (CPH) and conjugated ditopic guests (Gs). The excellent performance of the CPSN could be attributed to the following factors: (1) The “mol. wire effect” of the conjugated polymeric structure, (2) aggregation-induced enhanced emission (AEE) moieties in the CPH backbone, and (3) high capacity of donor-acceptor energy transfer, and (4) crosslinked structures triggered by the host-guest binding between Gs and CPH. Moreover, the emission of the CPSN could be tuned by using different Gs or varying the host/guest ratio, thus reaching a 96% sRGB area.

Angewandte Chemie, International Edition 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 C3H7NO2, Product Details of C18H10.

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

Santos, Fernando published the artcileInteractions of sulindac and its metabolites with phospholipid membranes: An explanation for the peroxidation protective effect of the bioactive metabolite, Synthetic Route of 59973-80-7, the publication is Free Radical Research (2008), 42(7), 639-650, database is CAplus and MEDLINE.

Non-steroidal anti-inflammatory drugs (NSAIDs) treat inflammatory processes by inhibition of cyclooxygenase (COX). However, their action against lipid peroxidation can be an alternative pathway to COX inhibition. Since inflammation and lipid peroxidation are cell-surface phenomena, the effects of NSAIDs on membrane models were investigated. Peroxidation was induced by peroxyl radical (ROO^·) derived from AAPH and assessed in aqueous or lipid media using fluorescence probes with distinct lipophilic properties: fluorescein; HDAF and DPH-PA. The antioxidant effect of Sulindac and its metabolites was tested and related with their membrane interactions. Drug-membrane interactions included the study of: drug location by fluorescence quenching; drug interaction with membrane surface by zeta-potential measurements; and membrane fluidity changes by steady-state anisotropy. Results revealed that the active NSAID (sulindac sulfide) penetrates into the lipid bilayer and protects the membrane against oxy-radicals. The inactive forms (sulindac and sulindac sulfone) present weaker interactions with the membrane and are better radical scavengers in aqueous media.

Free Radical Research 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, Synthetic Route of 59973-80-7.

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

Baumgartner, Maria T. published the artcileSteric effects in the synthesis of ortho-substituted 1,1′-binaphthalene derivatives by the S_RN1 and the Stille Reaction, COA of Formula: C22H18O2, the publication is ARKIVOC (Gainesville, FL, United States) (2003), 420-433, database is CAplus.

The scope of the S_RN1 mechanism and the Stille reaction to synthesize 1,1′-binaphthalene derivatives was investigated. The best yield of 2′-methoxy-1,1′-binaphthalenyl-2-ol (52%) was obtained in liquid ammonia or DMSO by the S_RN1 irradiated reaction of 1-iodo-2-methoxynaphthalene with the anion of 2-naphthol. A lower yield (40%) of BINOL is obtained in water with 1-iodo-2-hydroxynaphthalene as substrate when the reaction is sonicated before irradiation The Stille reaction between (2-methoxy-1-naphthyl)-trimethylstannane and 1-iodo-2-methoxynaphthalene afforded low yields (15-11%) of the 1,1′-binaphthalene derivative Based on AM1 and B3LYP calculations the yields of the 1,1′-binaphthalene derivatives obtained through the electron transfer S_RN1 reaction can be attributed to kinetic factors of the radical nucleophile coupling step.

ARKIVOC (Gainesville, FL, United States) 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