Tag: 400-500

Kawata, Tsutomu; Yamamoto, Motokazu; Yamana, Masao; Tajima, Moritaka; Nakano, Tomoyasu published an article in 1975, the title of the article was Characteristics of viologen derivatives for electrochromic display.Recommanded Product: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide And the article contains the following content:

The polarog. half-wave potentials (E1/2, in aqueous solutions with pH 3.29 at 25°) and the absorption spectra (at λ = 250-700 nm) in various media (aqueous solution, MeOH, glycerin) were determined to characterize the electrochromic behavior of the viologen derivatives X-RN+C5H4-C5H4N+RX- [= Viol] (R = Pr, C6H13, or C7H15 for X = Br; X = Cl, Br, or I for R = PhCH2). Two polarog. waves were observed for each derivative: the 1st E1/2 [= 0.568-0.710 V vs. SCE] was attributed to the reduction, dication of Viol (I, colorless) + e- ⇄ radical cation (II, colored); and the 2nd E1/2 [= 0.775-0.965 V] was attributed to II + e- ⇄ biradical (III, colored). The E1/2 values were smaller for the PhCH2 derivatives than for the alkyl derivatives For R = PhCH2, the observed absorption maximum were at λ (in nm) ≈ 260 for I, ≈ 260, 400, and 630 for II, and ≈ 380 for III. With a viologen derivative in an electrochromic display device (having a transparent SnO2 cathode and a Pt anode), the writing time decreased with increasing applied voltage, and was ∼0.4-0.8 sec for obtaining a transmittance of 80%. An applied voltage greater than the 2nd E1/2 caused the color to change from purple to yellow; on open circuit, the color changed back to purple. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Recommanded Product: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to viologen derivative polarog optical absorption, electrochromic display viologen derivative, Electric Phenomena: Other Devices and other aspects.Recommanded Product: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Bin; Wen, Hui-Min; Wang, Hailong; Wu, Hui; Yildirim, Taner; Zhou, Wei; Chen, Banglin published an article in 2015, the title of the article was Porous metal-organic frameworks with Lewis basic nitrogen sites for high-capacity methane storage.Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid And the article contains the following content:

The use of porous materials to store/deliver natural gas (mostly methane) in vehicles requires large amounts of methane being stored per unit volume In this work, we report several porous metal-organic frameworks (MOFs) with NOTT-101 type structures, containing Lewis basic nitrogen sites through the incorporation of pyridine, pyridazine, and pyrimidine groups into the organic linkers. They exhibit significantly higher total volumetric methane storage capacities (∼249-257 cm3 (STP) cm-3 at room temperature (RT) and 65 bar) than NOTT-101a (here the MOF abbreviation with “a” at the end represents the fully activated MOF). The most significant enhancement was observed on UTSA-76a with functional pyrimidine groups (237 cm3 (STP) cm-3 in NOTT-101a vs. 257 cm3 (STP) cm-3 in UTSA-76a). Several multivariate (MTV) MOFs constructed from two types of organic linkers (pyrimidine-functionalized and unfunctionalized) also show systematically improved methane storage capacities with increasing percentage of functionalized organic linkers. The immobilized functional groups have nearly no effect on the methane uptakes at 5 bar but significantly improve the methane storage capacities at 65 bar, so the reported MOFs exhibit excellent methane storage working capacities of ∼188-197 cm3 (STP) cm-3. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to lewis nitrogen capacity methane storage porous metal organic framework, Placeholder for records without volume info and other aspects.Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On October 1, 2020, Tozaki, Keiki; Tatara, Kazuyoshi; Nishiyama, Yugo published a patent.Product Details of 52243-87-5 The title of the patent was Heat storage material comprising viologen compound. And the patent contained the following:

The invention relates to a heat storage material capable of suppressing super cooling with only one kind of organic heat storage material. The heat storage material comprises: a viologen-based compound represented by a general formula I; where R is C3-18 aliphatic alkyl group, X is halogen or bis(trifluoromethanesulfonyl)imide. The heat storage material has ≤30°C of a m.p.-f.p. temperature difference ΔTm-Tf; where Tm is a temperature at which it melts when heated to become an isotropic liquid; and Tf is a temperature at which the isotropic liquid solidifies during cooling. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Product Details of 52243-87-5

The Article related to viologen compound heat storage material, Unit Operations and Processes: Heat Transfer and other aspects.Product Details of 52243-87-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Jian-Qiang; Li, Xue-Feng; Gu, Chu-Ying; da Silva, Julio C. S.; Barros, Amanda L.; Alves, Severino Jr.; Li, Bao-Hong; Ren, Fei; Batten, Stuart R.; Soares, Thereza A. published an article in 2015, the title of the article was A combined experimental and computational study of novel nanocage-based metal-organic frameworks for drug delivery.Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid And the article contains the following content:

Three new metal organic frameworks (MOFs) with chem. formulas [(CH3)2NH2] [Sm3(L1)2(HCOO)2(DMF)2(H2O)]·2DMF·18H2O (1), [Cu2(L2)(H2O)2]·2.22DMA (2) and [Zn2(L1)(DMA)]·1.75DMA were synthesized and structurally characterized. 1 and 2 show a classical NbO-like topol. and have two types of interconnected cages. 3 exhibits an uncommon zzz topol. and has two types of interconnected cages. These MOFs can adsorb large amounts of the drug 5-fluorouracil (5-FU) and release it in a progressive way. 5-FU was incorporated into desolvated 1, 2 and 3 with loadings of 0.40, 0.42, and 0.45 g g-1, resp. The drug release rates were 72%, 96% and 79% of the drug after 96 h in 1, 120 h in 2 and 96 h in 3, resp. Grand Canonical Monte Carlo (GCMC) simulations were performed to investigate the mol. interactions during 5-FU adsorption to the three novel materials. The GCMC simulations reproduced the exptl. trend with respect to the drug loading capacity of each material. They also provided a structural description of drug packing within the frameworks, helping to explain the load capacity and controlled release characteristics of the materials. 5-FU binding preferences to 1, 2 and 3 reflect the diversity in pore types, chem. and sizes. The calculated drug load is more related to the mol. properties of accessible volume Vacc than to the pore size. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to nanocage metal organic framework preparation 5fu drug delivery cancer, Pharmaceuticals: Formulation and Compounding and other aspects.Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Bin; Wen, Hui-Min; Wang, Hailong; Wu, Hui; Yildirim, Taner; Zhou, Wei; Chen, Banglin published an article in 2015, the title of the article was Porous metal-organic frameworks with Lewis basic nitrogen sites for high-capacity methane storage.Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid And the article contains the following content:

The use of porous materials to store/deliver natural gas (mostly methane) in vehicles requires large amounts of methane being stored per unit volume In this work, we report several porous metal-organic frameworks (MOFs) with NOTT-101 type structures, containing Lewis basic nitrogen sites through the incorporation of pyridine, pyridazine, and pyrimidine groups into the organic linkers. They exhibit significantly higher total volumetric methane storage capacities (∼249-257 cm3 (STP) cm-3 at room temperature (RT) and 65 bar) than NOTT-101a (here the MOF abbreviation with “a” at the end represents the fully activated MOF). The most significant enhancement was observed on UTSA-76a with functional pyrimidine groups (237 cm3 (STP) cm-3 in NOTT-101a vs. 257 cm3 (STP) cm-3 in UTSA-76a). Several multivariate (MTV) MOFs constructed from two types of organic linkers (pyrimidine-functionalized and unfunctionalized) also show systematically improved methane storage capacities with increasing percentage of functionalized organic linkers. The immobilized functional groups have nearly no effect on the methane uptakes at 5 bar but significantly improve the methane storage capacities at 65 bar, so the reported MOFs exhibit excellent methane storage working capacities of ∼188-197 cm3 (STP) cm-3. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to lewis nitrogen capacity methane storage porous metal organic framework, Placeholder for records without volume info and other aspects.Recommanded Product: 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On October 1, 2020, Tozaki, Keiki; Tatara, Kazuyoshi; Nishiyama, Yugo published a patent.Product Details of 52243-87-5 The title of the patent was Heat storage material comprising viologen compound. And the patent contained the following:

The invention relates to a heat storage material capable of suppressing super cooling with only one kind of organic heat storage material. The heat storage material comprises: a viologen-based compound represented by a general formula I; where R is C3-18 aliphatic alkyl group, X is halogen or bis(trifluoromethanesulfonyl)imide. The heat storage material has ≤30°C of a m.p.-f.p. temperature difference ΔTm-Tf; where Tm is a temperature at which it melts when heated to become an isotropic liquid; and Tf is a temperature at which the isotropic liquid solidifies during cooling. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Product Details of 52243-87-5

The Article related to viologen compound heat storage material, Unit Operations and Processes: Heat Transfer and other aspects.Product Details of 52243-87-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Jian-Qiang; Li, Xue-Feng; Gu, Chu-Ying; da Silva, Julio C. S.; Barros, Amanda L.; Alves, Severino Jr.; Li, Bao-Hong; Ren, Fei; Batten, Stuart R.; Soares, Thereza A. published an article in 2015, the title of the article was A combined experimental and computational study of novel nanocage-based metal-organic frameworks for drug delivery.Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid And the article contains the following content:

Three new metal organic frameworks (MOFs) with chem. formulas [(CH3)2NH2] [Sm3(L1)2(HCOO)2(DMF)2(H2O)]·2DMF·18H2O (1), [Cu2(L2)(H2O)2]·2.22DMA (2) and [Zn2(L1)(DMA)]·1.75DMA were synthesized and structurally characterized. 1 and 2 show a classical NbO-like topol. and have two types of interconnected cages. 3 exhibits an uncommon zzz topol. and has two types of interconnected cages. These MOFs can adsorb large amounts of the drug 5-fluorouracil (5-FU) and release it in a progressive way. 5-FU was incorporated into desolvated 1, 2 and 3 with loadings of 0.40, 0.42, and 0.45 g g-1, resp. The drug release rates were 72%, 96% and 79% of the drug after 96 h in 1, 120 h in 2 and 96 h in 3, resp. Grand Canonical Monte Carlo (GCMC) simulations were performed to investigate the mol. interactions during 5-FU adsorption to the three novel materials. The GCMC simulations reproduced the exptl. trend with respect to the drug loading capacity of each material. They also provided a structural description of drug packing within the frameworks, helping to explain the load capacity and controlled release characteristics of the materials. 5-FU binding preferences to 1, 2 and 3 reflect the diversity in pore types, chem. and sizes. The calculated drug load is more related to the mol. properties of accessible volume Vacc than to the pore size. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to nanocage metal organic framework preparation 5fu drug delivery cancer, Pharmaceuticals: Formulation and Compounding and other aspects.Quality Control of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Li; Yue, Jun-Ming; Qiao, Yong-Zhen; Niu, Yun-Yin; Hou, Hong-Wei published an article in 2013, the title of the article was The side chain template effect in viologen on the formation of polypseudorotaxane architecture. Six novel metal coordination polymers and their properties.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide And the article contains the following content:

The reaction of CuSCN (or CuCl2) in the presence of excess KSCN directed by viologen-based linear templates in a DMF-methanol system affords six coordination polymers, {(MV)[Cu2(SCN)4]}n (1, MV2+ = 1,1′-dimethyl-4,4′-bipyridinium), {(PrV)[Cu2(SCN)4]}n (2, PrV2+ = 1,1′-dipropyl-4,4′-bipyridinium), {(iPV)[Cu2(SCN)4]}n (3, iPV2+ = 1,1′-diisopropyl-4,4′-bipyridinium), [(1-iBV)Cu2(SCN)3]n (4, 1-iBV2+ = 1-isobutyl-4,4′-bipyridinium), {(iBV)[Cu2(SCN)4]}n (5, iBV2+ = 1,1′-diisobutyl-4,4′-bipyridinium), and {(PtV)[Cu2(SCN)4]}n (6, PtV2+ = 1,1′-dipentyl-4,4′-bipyridinium). The [Cu2(SCN)4]n anion in compounds 1, 3, and 5 adopts an infinite 2D polypseudorotaxane architecture and proved effectively that the stoppers at the end can enhance the polyrotaxane formation in the crystalline state, whereas the anion moieties in compounds 2 and 6 exhibit 1D linear architectures, suggesting dethreading from envelopes once solidifying from solution phase. Compound 4 was found to be a 2D coordination polymer with the organic ligand carrying a single charge. The side chain template effect of substituted group, UV-Vis diffuse reflectance spectra in the solid state and TGA properties of the six complexes are investigated. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to copper viologen thiocyanate complex preparation crystal structure, absorption spectra copper viologen thiocyanate complex, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 28, 2019, Liu, Jinjian; Li, Jing published a patent.COA of Formula: C16H22Br2N2 The title of the patent was Two photochromic purpurine host-object MOFs material, and its preparation method and application. And the patent contained the following:

The inventive purpurine host-object MOFs material has formula of (EV)2/n[Cd(BTC)(H2O)]n·2nH2O or (PV)2/n[Cd(BTC)(H2O)]n·2nH2O, wherein EV2+ is 1,1-di(ethyl)-4,4-bipyridyl cation, and PV2+ is 1,1-di(propyl)-4,4-bipyridyl cation. One preparation method includes (1) adding 4,4-bipyridine and Et bromide in anhydrous acetonitrile, heating under reflux for 24 h, cooling, filtering, and washing to obtain 1,1-di(ethyl)-4,4-bipyridyl bromide; (2) dissolving with cadmium nitrate in deionized water; (3) dissolving 1,3,5-trimesic acid and NaOH in deionized water under heating; (4) mixing with solution of step (2), standing for 5 d, washing, and drying. The invention is simple and easy to operate, economical and non-toxic. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).COA of Formula: C16H22Br2N2

The Article related to bipyridinium cadmium trimesate mof preparation crystal structure photochromism, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.COA of Formula: C16H22Br2N2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 22, 2018, Han, Zhengbo; Zhao, Siyu published a patent.Application In Synthesis of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid The title of the patent was Preparation method of indium-based metal organic anion framework material and its application in adsorption of cationic organic dye. And the patent contained the following:

The title preparation method includes (1) mixing indium nitrate, 5,5′-(pyridyl-2,5-disubstituted)-1,3-phthalic acid (H4L), N,N-dimethylformamide and nitric acid, and stirring; and (2) reacting at 353-363 K for 3 d, cooling, standing for at least 1 d, washing with N,N-dimethylformamide, filtering, and drying to obtain the final metal organic anion framework material. The material can be used in adsorption of cationic organic dyes such as methylene blue. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Application In Synthesis of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to indium pyridyl phthalate mof preparation crystal structure dye adsorption, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Application In Synthesis of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem