Synthesis, structure, and properties of poly[1‐(trimethylgermyl)‐1‐propyne]

Kwak, Giseop; Masuda, Toshio

doi:10.1002/1099-0518(20000815)38:16<2964::aid-pola140>3.0.co;2-#

Cited by 20 publications

(13 citation statements)

References 13 publications

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“…This property has been attributed to an extremely high fractional free volume that results from an unusually loose packing of stiff polymer chains that contain carbon-carbon double bonds and bulky side-chain groups. [15][16][17][18][19][20] PTMSP has the highest known…”

Section: Introductionmentioning

confidence: 99%

A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

Yave¹,

Shishatskiy²,

Abetz³

et al. 2007

Macro Chemistry & Physics

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Poly(4‐methyl‐2‐pentyne) (PMP)/TiO2 hybrid nanocomposite membranes have been investigated for natural gas conditioning. Tailor‐made PMP with 35% cis‐content was identified as an attractive material to prepare nanocomposite membranes; it presented good stability towards organic vapors and optimal properties for butane/methane separation. The PMP/TiO2 hybrid nanocomposite membranes presented an improvement of butane permeability and butane/methane selectivity. The addition of TiO2 nanoparticles to the PMP enhanced the selectivity more effectively than fumed‐silica, and it is attractively higher than those currently reported in the open literature.magnified image

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Section: Introductionmentioning

confidence: 99%

A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

Yave¹,

Shishatskiy²,

Abetz³

et al. 2007

Macro Chemistry & Physics

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“…The peaks at 1442 cm 21 was originated from the CH 2 scissor vibration frequencies. Figure 2 shows the 1 H-NMR spectrum of poly(DMAPPB) in DMSO-d 6 . In general, the NMR spectrum of conjugated polymers having pyridyl moieties showed poor quality due to the line-broadening effect of ionic pyridyl moieties.…”

Section: Polymer Structurementioning

confidence: 74%

“…We also attempted the polymerization of this ionic monomer by molybdenum and tungsten chlorides such as MoCl 5 and WCl 6 , which had been used as very effective catalysts for the polymerization of some acetylene derivatives. [20,21,32] However, Mo-and W-based catalyst systems did not give any polymeric products for the present polymerization of DMAPPB, even when the cocatalysts such as EtAlCl 2 and Me 4 Sn were used.…”

Section: Polymerizationmentioning

confidence: 99%

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Polymerization of 4-Dimethylamino-N-propargylpyridinium Bromide by Transition Metal Catalysts

Gal

Jin

Gui

et al. 2003

Journal of Macromolecular Science, Part A

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The polymerization of an ionic propargyl derivative, 4-dimethylamino-N-propargylpyridinium bromide (DMAPPB), was carried out by palladium, platinum, and ruthenium chlorides. The polymerization of DMAPPB by these transition metal 401 catalysts proceeded well to give a relatively high polymer yield. The chemical structure of the resulting polymer was characterized by such instrumental methods as elemental analysis, infrared, NMR, UV -visible spectroscopies to have conjugated polymer backbone system bearing 4-dimethylamino-N-methylenepyridinium bromide. The polymer was soluble in DMF, DMSO, and formic acid, and found to be less hygroscopic than those of similar homologues having more smaller substituents. The resulting polymers were mostly black powders and showed the amorphous morphology.

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“…Other disubstituted acetylene polymers such as poly(TMSP) and polymer 2a also exhibit a similar tendency. [35][36][37][38][39][40][41][42] For instance, the P O 2 value of poly (TMSP) drastically changes from 8000 to *1000 barrers for 30 days. 38 Thus, it can be said that these poly(diarylacetylene) membranes maintain relatively high gas permeability after storage for a long period of time.…”

Section: Gas Permeabilitymentioning

confidence: 99%

Synthesis, properties, and gas permeability of novel poly(diarylacetylene) derivatives

Sakaguchi

Yumoto

Shida

et al. 2006

J. Polym. Sci. A Polym. Chem.

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Poly(diphenylacetylene)s having various silyl groups are soluble in common solvents, from whose membranes poly(diphenylacetylene) membranes can be obtained by desilylation. The oxygen permeability coefficients of the desilylated polymers are quite different from one another (120-3300 barrers) irrespective of the same polymer structure. When bulkier silyl groups are removed, the oxygen permeability increases to larger extents. Poly[1-aryl-2-p-(trimethylsilyl)phenylacetylene]s are soluble in common solvents, and afford free-standing membranes. These Si-containing polymer membranes are desilylated to give the membranes of poly[1-aryl-2-phenylacetylene]s. Both of the starting and desilylated polymers show very high thermal stability and high gas permeability. 1-Phenyl-2-p-(t-butyldimethylsiloxy)phenylacetylene polymerizes into a high-molecular-weight polymer. This polymer is soluble in common organic solvents to provide a free-standing membrane. Desilylation of this membrane yields a poly(diphenylacetylene) having free hydroxyl groups, which is the first example of a highly polar group-carrying poly(diphenylacetylene). The P CO 2 /P CH 4 and P CO 2 / P N 2 permselectivity ratios of poly(1-phenyl-2-p-hydroxylphenylacetylene) membrane are as large as 47.8 and 45.8, respectively, while keeping relatively high P CO 2 of 110 barrers. V V C

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Synthesis, structure, and properties of poly[1‐(trimethylgermyl)‐1‐propyne]

Cited by 20 publications

References 13 publications

A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

Polymerization of 4-Dimethylamino-N-propargylpyridinium Bromide by Transition Metal Catalysts

Synthesis, properties, and gas permeability of novel poly(diarylacetylene) derivatives

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Synthesis, structure, and properties of poly[1‐(trimethylgermyl)‐1‐propyne]

Cited by 20 publications

References 13 publications

A Novel Poly(4‐methyl‐2‐pentyne)/TiO2 Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

A Novel Poly(4‐methyl‐2‐pentyne)/TiO2 Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

Polymerization of 4-Dimethylamino-N-propargylpyridinium Bromide by Transition Metal Catalysts

Synthesis, properties, and gas permeability of novel poly(diarylacetylene) derivatives

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A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation

A Novel Poly(4‐methyl‐2‐pentyne)/TiO₂ Hybrid Nanocomposite Membrane for Natural Gas Conditioning: Butane/Methane Separation