Two novel heterocyclic diamine monomers: 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)phenyl] (2H)phthalazin-1-one and 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)-3,5-dimethylphenyl](2H)phthalazin-1-one ...Two novel heterocyclic diamine monomers: 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)phenyl] (2H)phthalazin-1-one and 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)-3,5-dimethylphenyl](2H)phthalazin-1-one were successfully synthesized from readily available heterocyclic bisphenol-like monomers in two steps in high yield. A series of novel poly(aryl ether amide)s containing the phthalazinone moiety were successfully prepared by the direct polymerization of the novel diamines and aromatic dicarboxylic acids using triphenyl phosphite and pyridine as condensing agents.展开更多
A novel aromatic diacid, 4, 4'-bis[2-(4-carboxyphenyl)phthalazin-1-one-4-yl]-bisphenyl ether III, containing bisphthalazinone and ether linkages was prepared from nucleophilic substitution of p-chlorobenzonitril...A novel aromatic diacid, 4, 4'-bis[2-(4-carboxyphenyl)phthalazin-1-one-4-yl]-bisphenyl ether III, containing bisphthalazinone and ether linkages was prepared from nucleophilic substitution of p-chlorobenzonitrile with the bisphenol-like monomer I, followed by alkaline hydrolysis of the intermediate dinitrile II. A series of poly(ether amide)s containing bisphthala- zinone and ether linkages derived from diacid III and aromatic diamines were synthesized by one-step solution condensation polymerization using triphenyl phosphite and pyridine as condensing agents. Moreover, the properties of poly(ether amide)s including thermal stability, solubility and crystallinity were also studied.展开更多
A novel poly(ether block amide)(PEBA)based solid-state polymer electrolyte(SPE)was prepared using a casting method,in which 20wt%lithium(Li)bis-(trifluoromethanesulfonyl)imide(LiTFSI)and aluminum oxide(Al_(2)O_(3))nan...A novel poly(ether block amide)(PEBA)based solid-state polymer electrolyte(SPE)was prepared using a casting method,in which 20wt%lithium(Li)bis-(trifluoromethanesulfonyl)imide(LiTFSI)and aluminum oxide(Al_(2)O_(3))nanoparticles were used as the Li salt and solid plasticizer,respectively.In the case of addition of 3wt%Al_(2)O_(3) nanoparticles,ion conductivity of the obtained PEBA 2533-20wt%LiTFSI-3wt%Al_(2)O_(3) SPE was 3.57×10^(−5) S cm^(−1) at 25°C.Furthermore,the Li symmetrical battery assembled with it showed excellent cycling stability(1000 h)at 0.1 mA cm^(−2).While,the assembled all-solid-state Li/PEBA 2533-20%LiTFSI-3wt%Al_(2)O_(3)/LiFePO 4(areal capacity:0.15 mAh cm^(−2))battery maintained 94.9%of the maximal capacity(133.9 mAh g^(−1@0.1) mA cm^(−2))at 60°C even after 650 cycles with a superior average coulombic efficiency(CE)of 99.84%.By using X-ray photoelectron spectroscope(XPS),self-aggregation layer(SAL)of polyamide 12(PA12)of PEBA 2533 was discovered,which should contribute to promoting the robustness of lithium fluoride(LiF)enriched solid-electrolyte interphase(SEI)layer.In addition,it is considered that the state of interface between SPE and cathode should be the cause of voltage polarization of the full cell.展开更多
A novel aromatic diamine, 1, 2-dihydro-2-（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2, 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in tw...A novel aromatic diamine, 1, 2-dihydro-2-（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2, 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL.g^-1. The structures of diamine and polymers obtained were confirmed by MS, PT-IR, WAXD and ^1H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 281-307℃ and good solubility in polar solvents.展开更多
A series of hyperbranched poly(ester-amide-ether)s (H-PEAEs) were synthesized via the A2+CB3 approach by the self-transesterification of ethyl ester-amide-ethers end-capped with three hydroxyl groups and ethyl ester g...A series of hyperbranched poly(ester-amide-ether)s (H-PEAEs) were synthesized via the A2+CB3 approach by the self-transesterification of ethyl ester-amide-ethers end-capped with three hydroxyl groups and ethyl ester group at two terminals.The molecular structures were characterized with 1H NMR and FT-IR spectroscopy.The number average molecular weights were estimated by GPC analysis to possess bimodal wide distribution from 1.57 to 2.09.The strong inherent blue fluorescence was observed at 330 nm for excitation and 390 nm for emission.Moreover,the emission intensity and fluorescence quantum yield increased along with the incorporated ether chain length,as well as almost linearly with the H-PEAE concentration in an aqueous solution.For comparing the fluorescence performance,the linear poly(ester-amide-ether) (L-PEAE) and hyperbranched poly(ester-amide) (H-PEA) were synthesized.The results showed that the coexistence of ether bond and carboxyl group in the molecular chain was essential for generating the strong fluorescence.However,the compact backbone of H-PEAE would be propitious to the enhancement of fluorescence properties.展开更多
A series organosoluble and heterocyclic poly（ether-amide）s （PEA）s were synthesized from a new diamine containing pyridine moiety and four aliphatic-aromatic dicarboxylic acids by direct polycondensation reactions....A series organosoluble and heterocyclic poly（ether-amide）s （PEA）s were synthesized from a new diamine containing pyridine moiety and four aliphatic-aromatic dicarboxylic acids by direct polycondensation reactions. Dicarboxilic acids 4a-4d containing ether groups were synthesized in two step reactions. At first, dialdehydes 3a-3d were synthesized from four dibromo alkanes la-ld and 4-hydroxybenzaldehyde 2, then dicarboxilic acids 4a-4d were synthesized from dialdehydes 3a-3d and malonic acid in a solvent free reaction. On the other hand, the new diamine 8 containing pyridine ring was synthesized in two step reactions. The structures of synthesized monomers and polymers were proven by FTIR, NMR spectroscopy and elemental analysis. Also all of the above polymers were fully characterized by inherent viscosity, solubility tests, gel permeation chromatography （GPC）, differential scanning calorimetry （DSC） and thermogravimetric analysis （TGA）. The resulted PEAs have shown good inherent viscosities, solubility and thermal properties.展开更多
Two novel heterocylic diamine monomers: l,2-dihydro-2-(4-aminophenyl)-4-4-(4-aminophenoxy) phenyl]-(2H)-phthalazin-l-one and 1,2-Dihydro-2-( 4-aminophenyl )-4-[4-(4-aminophenoxy-3, 5-dimethylphenyl]-(2H)-phthalazin-1-...Two novel heterocylic diamine monomers: l,2-dihydro-2-(4-aminophenyl)-4-4-(4-aminophenoxy) phenyl]-(2H)-phthalazin-l-one and 1,2-Dihydro-2-( 4-aminophenyl )-4-[4-(4-aminophenoxy-3, 5-dimethylphenyl]-(2H)-phthalazin-1-one were successfully synthesized using readily available heterocyclic bisphenol-like monomers through two steps in high yield. A series of novel poly(aryl ether amide)s containing the phthalazinone moiety with inherent viscosities of 1.16–1.67 dL/g were prepared by the direct polymerization of the novel diamines and aromatic dicarboxylic acids using triphenyl phosphite and pyridine as condensing agents. The polymers were readily soluble in a variety of solvents such as N,N -dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), dimethylsulfoxide ( DMSO ), N-methyl-2-pyrrolidinone (NMP), and pyridine. The polymers had high glass transition temperatures ( Tg) in the 291–329°C range.展开更多
文摘Two novel heterocyclic diamine monomers: 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)phenyl] (2H)phthalazin-1-one and 1,2-dihydro-2-(4-aminophenyl)-4-[4-(4-aminophenoxy)-3,5-dimethylphenyl](2H)phthalazin-1-one were successfully synthesized from readily available heterocyclic bisphenol-like monomers in two steps in high yield. A series of novel poly(aryl ether amide)s containing the phthalazinone moiety were successfully prepared by the direct polymerization of the novel diamines and aromatic dicarboxylic acids using triphenyl phosphite and pyridine as condensing agents.
文摘A novel aromatic diacid, 4, 4'-bis[2-(4-carboxyphenyl)phthalazin-1-one-4-yl]-bisphenyl ether III, containing bisphthalazinone and ether linkages was prepared from nucleophilic substitution of p-chlorobenzonitrile with the bisphenol-like monomer I, followed by alkaline hydrolysis of the intermediate dinitrile II. A series of poly(ether amide)s containing bisphthala- zinone and ether linkages derived from diacid III and aromatic diamines were synthesized by one-step solution condensation polymerization using triphenyl phosphite and pyridine as condensing agents. Moreover, the properties of poly(ether amide)s including thermal stability, solubility and crystallinity were also studied.
文摘A novel poly(ether block amide)(PEBA)based solid-state polymer electrolyte(SPE)was prepared using a casting method,in which 20wt%lithium(Li)bis-(trifluoromethanesulfonyl)imide(LiTFSI)and aluminum oxide(Al_(2)O_(3))nanoparticles were used as the Li salt and solid plasticizer,respectively.In the case of addition of 3wt%Al_(2)O_(3) nanoparticles,ion conductivity of the obtained PEBA 2533-20wt%LiTFSI-3wt%Al_(2)O_(3) SPE was 3.57×10^(−5) S cm^(−1) at 25°C.Furthermore,the Li symmetrical battery assembled with it showed excellent cycling stability(1000 h)at 0.1 mA cm^(−2).While,the assembled all-solid-state Li/PEBA 2533-20%LiTFSI-3wt%Al_(2)O_(3)/LiFePO 4(areal capacity:0.15 mAh cm^(−2))battery maintained 94.9%of the maximal capacity(133.9 mAh g^(−1@0.1) mA cm^(−2))at 60°C even after 650 cycles with a superior average coulombic efficiency(CE)of 99.84%.By using X-ray photoelectron spectroscope(XPS),self-aggregation layer(SAL)of polyamide 12(PA12)of PEBA 2533 was discovered,which should contribute to promoting the robustness of lithium fluoride(LiF)enriched solid-electrolyte interphase(SEI)layer.In addition,it is considered that the state of interface between SPE and cathode should be the cause of voltage polarization of the full cell.
基金This project is financially supported by Hi-tech Research and Development Program(2003AA33g-030)the National Natural Science Foundation of China(Contract grant number:50143013).
文摘A novel aromatic diamine, 1, 2-dihydro-2-（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2, 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL.g^-1. The structures of diamine and polymers obtained were confirmed by MS, PT-IR, WAXD and ^1H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 281-307℃ and good solubility in polar solvents.
基金support of the National Natural Science Foundation of China(50633010) is gratefully acknowledged
文摘A series of hyperbranched poly(ester-amide-ether)s (H-PEAEs) were synthesized via the A2+CB3 approach by the self-transesterification of ethyl ester-amide-ethers end-capped with three hydroxyl groups and ethyl ester group at two terminals.The molecular structures were characterized with 1H NMR and FT-IR spectroscopy.The number average molecular weights were estimated by GPC analysis to possess bimodal wide distribution from 1.57 to 2.09.The strong inherent blue fluorescence was observed at 330 nm for excitation and 390 nm for emission.Moreover,the emission intensity and fluorescence quantum yield increased along with the incorporated ether chain length,as well as almost linearly with the H-PEAE concentration in an aqueous solution.For comparing the fluorescence performance,the linear poly(ester-amide-ether) (L-PEAE) and hyperbranched poly(ester-amide) (H-PEA) were synthesized.The results showed that the coexistence of ether bond and carboxyl group in the molecular chain was essential for generating the strong fluorescence.However,the compact backbone of H-PEAE would be propitious to the enhancement of fluorescence properties.
文摘A series organosoluble and heterocyclic poly（ether-amide）s （PEA）s were synthesized from a new diamine containing pyridine moiety and four aliphatic-aromatic dicarboxylic acids by direct polycondensation reactions. Dicarboxilic acids 4a-4d containing ether groups were synthesized in two step reactions. At first, dialdehydes 3a-3d were synthesized from four dibromo alkanes la-ld and 4-hydroxybenzaldehyde 2, then dicarboxilic acids 4a-4d were synthesized from dialdehydes 3a-3d and malonic acid in a solvent free reaction. On the other hand, the new diamine 8 containing pyridine ring was synthesized in two step reactions. The structures of synthesized monomers and polymers were proven by FTIR, NMR spectroscopy and elemental analysis. Also all of the above polymers were fully characterized by inherent viscosity, solubility tests, gel permeation chromatography （GPC）, differential scanning calorimetry （DSC） and thermogravimetric analysis （TGA）. The resulted PEAs have shown good inherent viscosities, solubility and thermal properties.
基金Project (No. 59473019) supported by the National Natural Science Foundation of China.
文摘Two novel heterocylic diamine monomers: l,2-dihydro-2-(4-aminophenyl)-4-4-(4-aminophenoxy) phenyl]-(2H)-phthalazin-l-one and 1,2-Dihydro-2-( 4-aminophenyl )-4-[4-(4-aminophenoxy-3, 5-dimethylphenyl]-(2H)-phthalazin-1-one were successfully synthesized using readily available heterocyclic bisphenol-like monomers through two steps in high yield. A series of novel poly(aryl ether amide)s containing the phthalazinone moiety with inherent viscosities of 1.16–1.67 dL/g were prepared by the direct polymerization of the novel diamines and aromatic dicarboxylic acids using triphenyl phosphite and pyridine as condensing agents. The polymers were readily soluble in a variety of solvents such as N,N -dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), dimethylsulfoxide ( DMSO ), N-methyl-2-pyrrolidinone (NMP), and pyridine. The polymers had high glass transition temperatures ( Tg) in the 291–329°C range.
