Tag: M.W=300-350

Cao, Hong-Tao published the artcileNovel electron acceptor based on spiro[fluorine-9,9′-xanthene] for exciplex thermally activated delayed fluorescence, SDS of cas: 159-62-6, the publication is Dyes and Pigments (2018), 422-429, database is CAplus.

Two cyano-substituted spiro[fluorine-9,9′-xanthene] (SFX) derivatives, 2-carbonitrile-spiro[fluorene-9,9′-xanthene] (CNSFX) and 2,7-dicarbonitrile-spiro[fluorene-9,9′-xanthene] (DCNSFX) were conveniently prepared as electron acceptors to combine with tris(4-carbazoyl-9-ylphenyl)amine (TCTA) as electron donor to form exciplex emitters, resp. Favorable exciplex-TADF was successfully achieved with photoluminescence quantum yield of 31% and electroluminescence efficiency of 8.2 cd A^-1 in TCTA:DCNSFX, which possesses increases of 1.1 and 3.3 times than those (15% and 1.9 cd A^-1) of TCTA:CNSFX, resp. The relatively favorable performance of TCTA:DCNSFX is related to the stronger electron-accepting ability through dicyano-substitution and larger driving force in the exciplex emission. These appealing results reveal that the dicyano-substituted SFX derivative opens interesting perspectives for developing favorable exciplex-TADF organic light-emitting diodes in the future.

Dyes and Pigments 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

Ren, Bao-Yi published the artcileQuinolyl functionalized spiro[fluorene-9,9′-xanthene] host materials with bipolar characteristics for green and red phosphorescent organic light-emitting diodes, Computed Properties of 159-62-6, the publication is Organic Electronics (2016), 140-147, database is CAplus.

Spiro[fluorene-9,9′-xanthene] (SFX) bipolar hosts bearing one, two and three quinolyl substituents, namely SFX-bPy, SFX-DbPy and SFX-TbPy, were designed and synthesized for phosphorescent organic light emitting diodes (PhOLEDs). The successive substitution of quinoline at 2′, 2 and 7′ positions of SFX results in reduced LUMO energy levels while leaving the HOMO energy levels nearly intact. The impact of quinoline substitution in these SFX-based hosts on PhOLED performance was investigated in detail through green and red model devices. For the green emitting devices, the device based on SFX-bPy host showed better performance (23.6 cd A^-1, 23.4 lm W^-1, 6.3%) due to high triplet energy level (T₁) and balanced carriers-transporting ability. In contrast, for the red PhOLED devices, the device hosted by SFX-DbPy displayed higher performance (15.8 cd A^-1, 16.0 lm W^-1, 9.1%), attributable to the well matched T₁ and separated frontier MOs. This work thus sheds light on the rational design of SFX-based bipolar hosts for more efficient PhOLEDs.

Organic Electronics 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, Computed Properties of 159-62-6.

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

Li, Xiao-Zhen published the artcileMetal ion adaptive self-assembly of photoactive lanthanide-based supramolecular hosts, Product Details of C22H18O2, the publication is Chemical Communications (Cambridge, United Kingdom) (2020), 56(32), 4416-4419, database is CAplus and MEDLINE.

A post-synthetic transmetalation self-assembly strategy was developed for the preparation of near IR (NIR) emitting Yb₈L₆ cubes, which could not be synthesized through direct metal-ligand assembly procedures. Metal-adaptive critical structural transformations from La₆L₃ triangular prism to Ln₈L₆ cubes were observed along the lanthanide series, the latter of which showed size-selective guest binding behavior toward poly-aromatic hydrocarbon (PAH) mols.

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, Product Details of C22H18O2.

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

Fu, Wai Chung published the artcileA benzo[c]carbazolyl-based phosphine ligand for Pd-catalyzed tetra-ortho-substituted biaryl syntheses, Category: naphthyridine, the publication is Organic Chemistry Frontiers (2016), 3(2), 273-276, database is CAplus.

A new benzo[c]carbazolyl-based phosphine ligand I has been designed and synthesized. This newly developed ligand I efficiently facilitates the Pd-catalyzed syntheses of tetra-ortho-substituted biaryl compounds RR¹ [R = C₆F₅, 2,3-dimethoxynaphthalen-1-yl, dimethyl-1,2-oxazol-4-yl, etc.; R¹ = 2,6-(CH₃)₂C₆H₃, 2,6-(CH₃O)₂C₆H₃, 2,4,6-(CH₃)₃C₆H₂, 2,6-(CH₃)₂-4-H₃COC₆H₂, 2-methoxynaphthalen-1-yl] via Suzuki-Miyaura cross-coupling. With 1 mol% of the Pd(OAc)₂/I catalyst, sterically congested biaryls were afforded in good-to-excellent yields. In particular, the mild reaction conditions exhibited good compatibility of heterocycles and functional groups including esters and nitrile. The ligand I was structurally characterized by X-ray crystallog. anal.

Organic Chemistry Frontiers 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, Category: naphthyridine.

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

Qiu, Liqin published the artcilePalladium-Catalyzed Suzuki-Miyaura Coupling Reactions of Boronic Acid Derivatives with Aryl Chlorides, Application In Synthesis of 2960-93-2, the publication is Asian Journal of Organic Chemistry (2016), 5(10), 1260-1268, database is CAplus.

A series of new biphenyl N,P-monophosphine ligands were developed via introduction of two methoxy groups to the biphenyl backbone. The ligands were found to be much more effective than their counterparts Buchwald ligands in the Suzuki-Miyaura coupling reactions of sterically hindered and electron-rich aryl chlorides with aryl boronic acids. A variety of tri-ortho-substituted or tetra-ortho-substituted biaryls or hetero-biaryls were conveniently prepared in up to 99% yield using 2′-(diphenylphosphanyl)-6,6′-dimethoxy-N,N-dimethyl-[1,1′-biphenyl]-2-amine-[Pd₂(dba)₃] as the catalyst.

Asian Journal of Organic Chemistry 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, Application In Synthesis of 2960-93-2.

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

Zhu, Junchen published the artcileA novel C₂ symmetric chiral stationary phase with N-[(4-Methylphenyl)sulfonyl]-L-leucine as chiral side chains, Computed Properties of 2960-93-2, the publication is Journal of Separation Science (2020), 43(12), 2338-2348, database is CAplus and MEDLINE.

In this study, a series of chiral stationary phases based on N-[(4-methylphenyl)sulfonyl]-L-leucine amide, whose enantiorecognition property has never been studied, were synthesized. Their enantioseparation abilities were chromatog. evaluated by 67 enantiomers. The chiral stationary phase derived from N-[(4-methylphenyl)sulfonyl]-L-leucine showed much better enantioselectivities than that based on N-(4-methylbenzoyl)-L-leucine amide. The construction of C₂ sym. chiral structure greatly improved the enantiorecognition performance of the stationary phase. The C₂ sym. chiral stationary phase exhibited superior enantioresolns. to other chiral stationary phases for most of the chiral analytes, especially for the chiral analytes with C₂ sym. structures. By comparing the enantioseparations of the enantiomers with similar structures, the importance of hydrogen bond interaction, π-π interaction, and steric hindrance on enantiorecognition was elucidated. The enantiorecognition mechanism of trans-N,N’-(1,2-diphenyl-1,2-ethanediyl)bis-acetamide, which had an excellent separation factor on the C₂ sym. chiral stationary phase, was investigated by ¹H-NMR spectroscopy and 2D ¹H-¹H nuclear overhauser enhancement spectroscopy.

Journal of Separation Science 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 C14H10N2O, Computed Properties of 2960-93-2.

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

Xu, Bo published the artcile4-Tert-butylpyridine Free Organic Hole Transporting Materials for Stable and Efficient Planar Perovskite Solar Cells, Application of Spiro[fluorene-9,9′-xanthene], the publication is Advanced Energy Materials (2017), 7(19), n/a, database is CAplus.

4-Tert-butylpyridine (tBP) is an important additive in triarylamine-based organic hole-transporting materials (HTMs) for improving the efficiency and steady-state performance of perovskite solar cells (PVSCs). However, the low b.p. of tBP (196°C) significantly affects the long-term stability and device performance of PVSCs. Herein, the design and synthesis of a series of covalently linked Spiro[fluorene-9,9′-xanthene] (SFX)-based organic HTMs and pyridine derivatives to realize efficient and stable planar PVSCs are reported. One of the tailored HTMs, N2,N2,N7,N7-tetrakis(4-methoxyphenyl)-3′,6′-bis(pyridin-4-ylmethoxy) spiro[fluorene-9,9′-xanthene]-2,7-diamine (XPP) with two para-position substituted pyridines that immobilized on the SFX core unit shows a high power conversion efficiency (PCE) of 17.2% in planar CH₃NH₃PbI₃-based PVSCs under 100 mW cm^-2 AM 1.5G solar illumination, which is much higher than the efficiency of 5.5% that using the well-known 2,2′,7,7′-tetrakis-(N,N-di-p-methoxy-phenyl-amine)9,9′-spirobifluorene (Spiro-OMeTAD) as HTM (without tBP) under the same condition. Most importantly, the pyridine-functionalized HTM-based PVSCs without tBP as additive show much better long-term stability than that of the state-of-the-art HTM Spiro-OMeTAD-based solar cells that containing tBP as additive. This is the first case that the tBP-free HTMs are demonstrated in PVSCs with high PCEs and good stability. It paves the way to develop highly efficient and stable tBP-free HTMs for PVSCs toward com. applications.

Advanced Energy Materials 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 C5H5F3O2, Application of Spiro[fluorene-9,9′-xanthene].

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

Nogi, Keisuke published the artcileAromatic metamorphosis: conversion of an aromatic skeleton into a different ring system, Application of Spiro[fluorene-9,9′-xanthene], the publication is Chemical Communications (Cambridge, United Kingdom) (2017), 53(29), 4055-4065, database is CAplus and MEDLINE.

Recent advances in the area of “aromatic metamorphosis”, where various aromatic compounds, such as dibenzothiophenes, dibenzofurans, and benzofurans, are transformed into a variety of ring systems using a multi-step strategy or ideally in one step has been reviewed.

Chemical Communications (Cambridge, United Kingdom) 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, Application of Spiro[fluorene-9,9′-xanthene].

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

Demchuk, Oleg M. published the artcileA mixed naphthyl-phenyl phosphine ligand motif for Suzuki, Heck, and hydrodehalogenation reactions, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene, the publication is Synlett (2006), 2908-2913, database is CAplus.

Nap-Phos, representing a new naphthyl-Ph biaryl-type phosphine ligand class and available by a short synthesis (4 steps, 71% overall yield), effectively catalyzes the Suzuki-Miyaura (including highly hindered cases), hydrodehalogenation, and Heck reactions.

Synlett 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, Recommanded Product: 2,2′-Dimethoxy-1,1′-binaphthalene.

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

Zhu, Ming-Hui published the artcileDetosylative (Deutero)alkylation of Indoles and Phenols with (Deutero)alkoxides, Application In Synthesis of 2960-93-2, the publication is Organic Letters (2019), 21(17), 7073-7077, database is CAplus and MEDLINE.

An efficient strategy for N/O-(deutero)alkylation of indoles and phenols with alkoxides/alcs. as the alkylation reagents is described. The consecutive detosylation/alkylation transformations feature mild reaction conditions, high ipso-selectivity, and good functional group tolerance (>50 examples). A one-pot selective N-alkylation of unprotected indoles with alcs. and TsCl is also realized. The application of this method is demonstrated by the introduction of isotope-labeled (CD₃ and ¹³CH₃) groups using the readily accessible labeled alcs. and the synthesis of pharmaceuticals.

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 C7H5I2NO3, Application In Synthesis of 2960-93-2.

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