A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in D...A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in DMSO. They were characterized through IR and elemental analysis. The preliminary magnetic properties of the complex PTA-Nd^3＋ was investigated, it was found that the material is a ferromagnet at low temperature.展开更多
A novel Schiff base type polyester containing 2,2′-diamino-4,4′-bithiazole （DABT） was prepared by low-temperature interface polycondensation of 1,4-benzenedicarbonyl dichloride with 4,4′-（4,4′-bithiazole-2,2′-...A novel Schiff base type polyester containing 2,2′-diamino-4,4′-bithiazole （DABT） was prepared by low-temperature interface polycondensation of 1,4-benzenedicarbonyl dichloride with 4,4′-（4,4′-bithiazole-2,2′-diylbis（imine-2,1-diyl）diphenol （BDDP）, which is derived from a 2,2′-diamino-4,4′-blthiazole （DABT） Schiff base reacted with a 4-hydroxybenzaldehyde monomer. The newly generated polyester was evaluated based on characterization of its solubility, FTIR spectroscopy, elemental analysis, X-ray diffraction measurements and thermogravimetric analysis （TGA） studies.展开更多
A novel conjugated hyperbranched polymer containing bithiazole rings （PBTADB） was synthesized by polycondensation of 1,3,5-benzenetricarboxaldehyde and 2,2＇-diamino-4,4＇-bithiazole （DABT）. The structure of the h...A novel conjugated hyperbranched polymer containing bithiazole rings （PBTADB） was synthesized by polycondensation of 1,3,5-benzenetricarboxaldehyde and 2,2＇-diamino-4,4＇-bithiazole （DABT）. The structure of the hyperbranched polymer was confirmed by FT-IR and 1H-NMR. PBTADB dissolved in organic polar solvents such as DMSO and NMP. Bithiazole tings were introduced to provide bidentate N-donor sites for binding metal ions. The metal complexes were prepared by chelation of the polymer with Co2＋ and Sm3＋. The magnetic behavior of coolcdination compounds was measured as a function of magnetic field strength （0-4.8 ×106 A/m） at 5 K and as a fimetion of temperature （5-300 K） at magnetic field strength of 2.4×106 A/re. The magnetic hysteresis loops of PBTADB-Sm3＋ and PBTADB-Co2＋ showed the typical ＇S＇ shape at 5 K with the Curie-Weiss temperature To = 96 K and 41 K respectively. The results show that they exhibit properties of soft ferromagnetic materials.展开更多
Two poly(Schiff base)s (PDBT and PDPE) were synthesized by polycondensation of 1,10-phenanthroline-5,6- dione (PD) with 2,2′-diamino-4,4′-bithiazole (DABT) and 4,4′-diaminodiphenyl ether (DAPE),respectively.The str...Two poly(Schiff base)s (PDBT and PDPE) were synthesized by polycondensation of 1,10-phenanthroline-5,6- dione (PD) with 2,2′-diamino-4,4′-bithiazole (DABT) and 4,4′-diaminodiphenyl ether (DAPE),respectively.The structures of the polymers were determined by FTIR and element analysis.The metal (Fe^(2+),Ni^(2+)) complexes were prepared from the polymers with FeSO_4 or NiSO_4,and the metal contents of the complexes were measured by complexometric titration.The magnetic behaviors of the complexes were examined a...展开更多
基金The authors are indebted to the financial support of the National Natural Science Foundation of China(No:20374044,20434020).
文摘A new polyamide containing bithiazole moieties （PTA） was synthesized by the polycondensation of 2, 2＇-diamino-4, 4＇-bithiazole （DABT） and oxalyl chloride. The polymer complex was prepared from PTA and NdC13 in DMSO. They were characterized through IR and elemental analysis. The preliminary magnetic properties of the complex PTA-Nd^3＋ was investigated, it was found that the material is a ferromagnet at low temperature.
文摘A novel Schiff base type polyester containing 2,2′-diamino-4,4′-bithiazole （DABT） was prepared by low-temperature interface polycondensation of 1,4-benzenedicarbonyl dichloride with 4,4′-（4,4′-bithiazole-2,2′-diylbis（imine-2,1-diyl）diphenol （BDDP）, which is derived from a 2,2′-diamino-4,4′-blthiazole （DABT） Schiff base reacted with a 4-hydroxybenzaldehyde monomer. The newly generated polyester was evaluated based on characterization of its solubility, FTIR spectroscopy, elemental analysis, X-ray diffraction measurements and thermogravimetric analysis （TGA） studies.
基金financially supported by the National Natural Science Foundation of China(Nos.21174129 and 20674071)
文摘A novel conjugated hyperbranched polymer containing bithiazole rings （PBTADB） was synthesized by polycondensation of 1,3,5-benzenetricarboxaldehyde and 2,2＇-diamino-4,4＇-bithiazole （DABT）. The structure of the hyperbranched polymer was confirmed by FT-IR and 1H-NMR. PBTADB dissolved in organic polar solvents such as DMSO and NMP. Bithiazole tings were introduced to provide bidentate N-donor sites for binding metal ions. The metal complexes were prepared by chelation of the polymer with Co2＋ and Sm3＋. The magnetic behavior of coolcdination compounds was measured as a function of magnetic field strength （0-4.8 ×106 A/m） at 5 K and as a fimetion of temperature （5-300 K） at magnetic field strength of 2.4×106 A/re. The magnetic hysteresis loops of PBTADB-Sm3＋ and PBTADB-Co2＋ showed the typical ＇S＇ shape at 5 K with the Curie-Weiss temperature To = 96 K and 41 K respectively. The results show that they exhibit properties of soft ferromagnetic materials.
基金supported by the National Natural Science Foundation of China (Nos,20434020,20674071).
文摘Two poly(Schiff base)s (PDBT and PDPE) were synthesized by polycondensation of 1,10-phenanthroline-5,6- dione (PD) with 2,2′-diamino-4,4′-bithiazole (DABT) and 4,4′-diaminodiphenyl ether (DAPE),respectively.The structures of the polymers were determined by FTIR and element analysis.The metal (Fe^(2+),Ni^(2+)) complexes were prepared from the polymers with FeSO_4 or NiSO_4,and the metal contents of the complexes were measured by complexometric titration.The magnetic behaviors of the complexes were examined a...
