The self-assembly between poly(4-diazonium styrene) (PDS) and poly(sodiumsulfonate styrene)(PSS) was investigated.The mutilayer ult ra thin films were fabricated layer-by-layer successfully from PDS and PSS.Af ter hea...The self-assembly between poly(4-diazonium styrene) (PDS) and poly(sodiumsulfonate styrene)(PSS) was investigated.The mutilayer ult ra thin films were fabricated layer-by-layer successfully from PDS and PSS.Af ter heating for 10 min at 70℃ the multilayer film became very stable towards po lar solvents.No considerable changes were observed for the heated film soaked i n DMF (20℃) for 48 h,while the unheated film almost destroyed at same conditio n.The dramatic improvement in stability of the film towards polar solvents shou ld be attributed to the conversion of bonds between the layers of the film from ionic bond to covalent bond under heating.Y(4 DIAZONIUMSTYRENE)ANDPOLY(SODIUMSULFONATESTYRENE)YANGZhaohui,JIANGWei,CAOWeixiao(CollegeofChemistryandMolecularEngineering ,PekingUniversity ,Beijing 10 0 871)Abstract Theself assemblybetweenpoly( 4 diazoniumstyrene) (PDS)andpoly(sodiumsulfonatestyrene) (PSS)wasinvestigated .Themutilayerultrathinfilmswerefabricatedlayer by layersuccessfullyfromPDSandPSS .Afterheatingfor 1 0minat 70℃themultilayerfilmbecameverystabletowardspolarsolvents.NoconsiderablechangeswereobservedfortheheatedfilmsoakedinDMF ( 2 0℃ )for48h ,whiletheunheatedfilmalmostdestroyedatsamecondition.Thedramaticimprovementinstabilityofthefilmtowardspolarsolventsshouldbeattributedtotheconversionofbondsbetweenthelayersofthefilmfromionicbondtocovalentbondunderheating .Keywords Poly( 4 diazoniumstyrene) 。展开更多
Tetra(4-diazoniumbenzene)porphyrin(TDBP) was synthesized via diazo-reaction of tetra-(4-aminobenzene)porphyrin(TABP). From the analysis results of MALDI-TOF mass spectroscopy and FTIR,it was confirmed that the synthes...Tetra(4-diazoniumbenzene)porphyrin(TDBP) was synthesized via diazo-reaction of tetra-(4-aminobenzene)porphyrin(TABP). From the analysis results of MALDI-TOF mass spectroscopy and FTIR,it was confirmed that the synthesized porphyrin derivative mainly consists of tetra(4-diazoniumbenzene) porphyrin with trace tri- and di-substituted compounds. The self-assembly of TDBP with poly(styrene sulfonate)(PSS) was carried out and a novel TDBP/PSS multilayer ultrathin film on silicon substrate was obtained. The self-assembled film is very sensitive to heat and light,after heating or irradiation of UV light,the thin film becomes very stable towards polar solvents such as DMF. The coupling reaction of TDBP with phenol and the thermal stability of TDBP were also investigated preliminary. [WT5HZ]展开更多
以2,5-二羧酸-3,4-乙烯二氧噻吩为原料,经过催化脱羧反应合成聚合物单体3,4-乙烯二氧噻吩。通过对催化剂、溶剂、反应温度及反应时间4个因素的改变,对其合成工艺进行了优化。实验结果表明,脱羧反应的最佳工艺条件为:铜粉为催化剂,DMSO...以2,5-二羧酸-3,4-乙烯二氧噻吩为原料,经过催化脱羧反应合成聚合物单体3,4-乙烯二氧噻吩。通过对催化剂、溶剂、反应温度及反应时间4个因素的改变,对其合成工艺进行了优化。实验结果表明,脱羧反应的最佳工艺条件为:铜粉为催化剂,DMSO为溶剂,反应温度160℃,反应时间9h。在此条件下,产品的收率为68%,纯度为99.5%。目标化合物的结构通过GC-MS和1 H NMR进行了表征。展开更多
采用阳极氧化铝(AAO)模板电化学沉积方法,合成了1种新型吡咯-(3,4-乙烯二氧噻吩)(PE)共聚物纳米线阵列薄膜,作为锂离子电池电极材料,其表现出较高的比容量(1426. 1 m A·h/g,充放电电流密度为100 m A/g)和很好的循环稳定性(在充放...采用阳极氧化铝(AAO)模板电化学沉积方法,合成了1种新型吡咯-(3,4-乙烯二氧噻吩)(PE)共聚物纳米线阵列薄膜,作为锂离子电池电极材料,其表现出较高的比容量(1426. 1 m A·h/g,充放电电流密度为100 m A/g)和很好的循环稳定性(在充放电循环300圈之后,比容量仍然保持在1400 m A·h/g以上).这种多组分共聚物纳米线阵列有可能成为下一代长寿命、高性能的锂离子电池电极材料而被广泛开发.展开更多
文摘The self-assembly between poly(4-diazonium styrene) (PDS) and poly(sodiumsulfonate styrene)(PSS) was investigated.The mutilayer ult ra thin films were fabricated layer-by-layer successfully from PDS and PSS.Af ter heating for 10 min at 70℃ the multilayer film became very stable towards po lar solvents.No considerable changes were observed for the heated film soaked i n DMF (20℃) for 48 h,while the unheated film almost destroyed at same conditio n.The dramatic improvement in stability of the film towards polar solvents shou ld be attributed to the conversion of bonds between the layers of the film from ionic bond to covalent bond under heating.Y(4 DIAZONIUMSTYRENE)ANDPOLY(SODIUMSULFONATESTYRENE)YANGZhaohui,JIANGWei,CAOWeixiao(CollegeofChemistryandMolecularEngineering ,PekingUniversity ,Beijing 10 0 871)Abstract Theself assemblybetweenpoly( 4 diazoniumstyrene) (PDS)andpoly(sodiumsulfonatestyrene) (PSS)wasinvestigated .Themutilayerultrathinfilmswerefabricatedlayer by layersuccessfullyfromPDSandPSS .Afterheatingfor 1 0minat 70℃themultilayerfilmbecameverystabletowardspolarsolvents.NoconsiderablechangeswereobservedfortheheatedfilmsoakedinDMF ( 2 0℃ )for48h ,whiletheunheatedfilmalmostdestroyedatsamecondition.Thedramaticimprovementinstabilityofthefilmtowardspolarsolventsshouldbeattributedtotheconversionofbondsbetweenthelayersofthefilmfromionicbondtocovalentbondunderheating .Keywords Poly( 4 diazoniumstyrene) 。
文摘Tetra(4-diazoniumbenzene)porphyrin(TDBP) was synthesized via diazo-reaction of tetra-(4-aminobenzene)porphyrin(TABP). From the analysis results of MALDI-TOF mass spectroscopy and FTIR,it was confirmed that the synthesized porphyrin derivative mainly consists of tetra(4-diazoniumbenzene) porphyrin with trace tri- and di-substituted compounds. The self-assembly of TDBP with poly(styrene sulfonate)(PSS) was carried out and a novel TDBP/PSS multilayer ultrathin film on silicon substrate was obtained. The self-assembled film is very sensitive to heat and light,after heating or irradiation of UV light,the thin film becomes very stable towards polar solvents such as DMF. The coupling reaction of TDBP with phenol and the thermal stability of TDBP were also investigated preliminary. [WT5HZ]
基金supported by the National Natural Science Foundation of China(21773215,J1210060)the Innovative Research Grant for Undergraduate Students of National/Zhengzhou University(201710459008)~~
文摘以2,5-二羧酸-3,4-乙烯二氧噻吩为原料,经过催化脱羧反应合成聚合物单体3,4-乙烯二氧噻吩。通过对催化剂、溶剂、反应温度及反应时间4个因素的改变,对其合成工艺进行了优化。实验结果表明,脱羧反应的最佳工艺条件为:铜粉为催化剂,DMSO为溶剂,反应温度160℃,反应时间9h。在此条件下,产品的收率为68%,纯度为99.5%。目标化合物的结构通过GC-MS和1 H NMR进行了表征。
文摘采用阳极氧化铝(AAO)模板电化学沉积方法,合成了1种新型吡咯-(3,4-乙烯二氧噻吩)(PE)共聚物纳米线阵列薄膜,作为锂离子电池电极材料,其表现出较高的比容量(1426. 1 m A·h/g,充放电电流密度为100 m A/g)和很好的循环稳定性(在充放电循环300圈之后,比容量仍然保持在1400 m A·h/g以上).这种多组分共聚物纳米线阵列有可能成为下一代长寿命、高性能的锂离子电池电极材料而被广泛开发.
