Tag: M.W=200-250

Goudappagouda published the artcileCascade energy transfer and tunable emission from nanosheet hybrids: locating acceptor molecules through chiral doping, Application of 9,10-Diethynylanthracene, the publication is Chemical Communications (Cambridge, United Kingdom) (2017), 53(52), 7072-7075, database is CAplus and MEDLINE.

Light harvesting donor-acceptor assemblies are indispensable to efficiently tap photons. In an attempt to improve the light harvesting efficiency of an acceptor doped assembly, the authors design and synthesize a donor-acceptor-donor triad which exhibits an exceptional intramol. energy transfer with excellent efficiency. Also, a facile cascade energy transfer (energy funneling) is observed in the presence of 2nd acceptors (63-91% efficiency) with tunable emission colors. Self-assembled nanosheets formed by the triad in the presence of acceptors exhibit cascade energy transfer assisted tunable emission. Use of chiral acceptors induces chirality to the triad and gave chiral nanosheets along with cascade energy transfer. Here chiral induction, nanosheet formation and cascade energy transfer in the presence of chiral acceptors are used as tools to probe the intercalation of acceptor mols. in the donor scaffold.

Chemical Communications (Cambridge, United Kingdom) 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, Application of 9,10-Diethynylanthracene.

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

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

Patel, Darshna K. published the artcileEnzyme mediated bacterial biotransformation and reduction in toxicity of 1:2 chromium complex AB193 and AB194 dyes, Computed Properties of 116-63-2, the publication is Journal of the Taiwan Institute of Chemical Engineers (2017), 1-9, database is CAplus.

A bacterial consortium was developed and applied for the treatment of 1:2 chromium complex azo dyes. Fed batch process was studied with optimized conditions for the decolorization of AB193 and AB194 up to 1100-1400 mg L^-1 of cumulative dye concentration without further nutrient addition Fed batch adapted consortium showed 39 and 42% enhanced decolorization for AB193 and AB194, resp. as compared to unadapted consortium. After bio-degradation of the dyes, chromium was not detected in the medium supernatant where as chromium was found sorbed on bacterial cell biomass. During the decolorization process laccase, lignin peroxidase, tyrosinase, azoreductase and NADH-DCIP reductase enzymes were found to be induced. HPLC and FTIR anal. data confirmed the biodegradation of both the dyes. Biodegradation pathways were proposed on the basis of H¹ NMR and GC-HRMS anal. along with role of induced enzymic system in the degradation process. 45-66% stimulation in growth was observed for Sorghum bicolor and Cicer aeriatinum when biodegradation products of both the dyes were used. Reduction in toxicity on S. aureus and P. aeruginosa was recorded in the range of 58-100% and 43-100%, resp.

Journal of the Taiwan Institute of Chemical Engineers 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 C10H9NO4S, Computed Properties of 116-63-2.

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

Dogan, Seda published the artcilePhotophysical and photovoltaic characterization of flourene-anthracene-benzothiadiazole based donor-acceptor type copolymers for bulk heterojunction polymer solar cells, Category: naphthyridine, the publication is Journal of Nanoelectronics and Optoelectronics (2019), 14(1), 8-18, database is CAplus.

Photophys. and photovoltaic properties of donor-acceptor type fluorene-anthracene and benzothiadiazole based copolymers were investigated. Bulk heterojunction polymer solar cells were fabricated. The distinction of the two polymers lies in the difference between the donor-acceptor ratios. We have compared their photovoltaic performances and investigated the effect of thickness of blend films on the device performance. The polymer having higher fluorene content exhibited higher photovoltaic performance. We have also observed that one of the polymers depending on the donor-acceptor ratio can act both as a donor and an acceptor in bulk heterojunction polymer solar cells. The solar cells fabricated from thinner blend films showed better photovoltaic performance. It was observed that the thickness slightly affects the morphol. of the blend films.

Journal of Nanoelectronics and Optoelectronics 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, Category: naphthyridine.

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

Sami, Sadaf published the artcileFunctionalization of multi-walled carbon nanotubes by 1-amino-2-naphthol-4-sulfonic acid and study of their antimicrobial activity against the gram-negative and gram-positive bacterias, HPLC of Formula: 116-63-2, the publication is Oriental Journal of Chemistry (2015), 31(4), 2195-2200, database is CAplus.

In this study, we investigated the chem. functionalization of carboxylated multiwalled carbon nanotubes (MWCNT-COOH) by 1-Amino-2-naphthol-4-sulfonic acid (ANSA). The functionalized MWCNTs exhibited good aqueous solubility due to the presence of the -OH and -SO3H groups of ANSA. The antimicrobial activity of the MWCNT-COOH as well as its functionalized multiwall nanotube MWCNT-CO-2-(1-amino-2-naphthol-4-sulfonic acid) was tested against some gram-neg. and gram-pos. bacterias. In vitro studies, MWCNTâ^’ANSA represented a significant enhancement in the antimicrobial capability of MWCNTs against gram-neg. E. coli and S. typhimurium bacterias. Therefore, these functionalized carboxylated multi wall nanotubes could potentially be considered as antimicrobial candidates.

Oriental Journal of Chemistry 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 C10H9NO4S, HPLC of Formula: 116-63-2.

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

Sivakumar, Kullampalayam Krishnasamy published the artcileConventional and microwave assisted synthesis of pyrazolone Mannich bases possessing anti-inflammatory, analgesic, ulcerogenic effect and antimicrobial properties, SDS of cas: 116-63-2, the publication is Bioorganic & Medicinal Chemistry Letters (2014), 24(13), 2940-2944, database is CAplus and MEDLINE.

In the present study, an efficient synthesis of some Mannich base of 5-methyl-2-[(2-oxo-2H-chromen-3-yl)carbonyl]-2,4-dihydro-3H-pyrazol-3-one was carried out by using conventional and non-conventional (microwave) techniques. Microwave assisted reactions showed that require shorter reaction time and good yield. The newly synthesized compounds were screened for their anti-inflammatory, analgesic activity, antioxidant, and antibacterial effects were compared with standard drug. Among the compounds studied, one compound showing nearly equipotent anti-inflammatory and analgesic activity than the standard drug (indomethacin), along with min. ulcerogenic index. Two compounds showing 1.06 times more active than ciprofloxacin against tested Gram-neg. bacteria.

Bioorganic & Medicinal Chemistry Letters 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 C9H5ClO4S, SDS of cas: 116-63-2.

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

Masoud, Mamdouh S. published the artcileSolvatochromic responses and pH effects on the electronic spectra of some azo derivatives of 1-amino-2-hydroxy-4-naphthalenesulfonic acid, Formula: C10H9NO4S, the publication is Journal of the Iranian Chemical Society (2016), 13(5), 931-943, database is CAplus.

Synthesis and characterization of five arylazo derivatives of 1-amino-2-hydroxy-4-naphthalenesulfonic acid (H2L1) are reported. The UV/Vis absorption spectra of the parent compound (H2L1) and its arylazo derivatives (H2L2-H4L6) have been measured at room temperature in seven solvents of different polarities and with variable parameters. The electronic transitions were analyzed using SPSS program, linear regression technique and Kamlet-Taft’s equation to permit a good understanding of solvent-induced spectral shifts. The electronic absorption spectra of the prepared compounds containing different substituents were studied in aqueous solutions at different pH values. The pK values of the investigated compounds were evaluated spectrophotometrically. The prevailing acid species present at any pH range are judged from the constructed distribution diagrams.

Journal of the Iranian Chemical Society 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 C10H9NO4S, Formula: C10H9NO4S.

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

Dutta Gupta, Sayan published the artcile2,4-dihydroxy benzaldehyde derived Schiff bases as small molecule Hsp90 inhibitors: Rational identification of a new anticancer lead, Computed Properties of 116-63-2, the publication is Bioorganic Chemistry (2015), 97-105, database is CAplus and MEDLINE.

Hsp90 is a mol. chaperone that heals diverse array of biomols. ranging from multiple oncogenic proteins to the ones responsible for development of resistance to chemotherapeutic agents. Moreover they are over-expressed in cancer cells as a complex with co-chaperones and under-expressed in normal cells as a single free entity. Hence inhibitors of Hsp90 will be more effective and selective in destroying cancer cells with min. chances of acquiring resistance to them. In continuation of our goal to rationally develop effective small mol. azomethines against Hsp90, we designed few more compounds belonging to the class of 2,4-dihydroxy benzaldehyde derived imines (1-13) with our validated docking protocol. The mols. exhibiting good docking score were synthesized and their structures were confirmed by IR, ¹H NMR and mass spectral anal. Subsequently, they were evaluated for their potential to suppress Hsp90 ATPase activity by Malachite green assay. The antiproliferative effect of the mols. were examined on PC3 prostate cancer cell lines by adopting 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay methodol. Finally, schiff base 13 emerged as the lead mol. for future design and development of Hsp90 inhibitors as anticancer agents.

Bioorganic Chemistry 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 C10H9NO4S, Computed Properties of 116-63-2.

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