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研究了金属离子对吸附在银胶表面的中位-四(4-N甲氧羰甲基吡啶)卟啉表面增强拉曼光谱的影响。结果表明,中位-四(4-N甲氧羰甲基吡啶)卟啉可发生金属离子取代反应。金属离子嵌入卟啉大环,吸附在银胶表面的中位-四(4-N甲氧羰甲基吡啶)卟啉转变为金属配合物。给出了各种金属配合物主要拉曼峰的经验式归属。金属离子的半径,d电子对卟啉环的排斥作用,金属卟啉骨架模式频率随孔穴大小,大环的平面性和π-π相互作用而相应变化的特性,都可用来解释不同金属离子配合物的结构灵敏特征峰为何存在着差异。 相似文献
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合成了两种新型噻吩基卟啉-5,15-二(2-噻吩基)-2,8,12,18-四乙基-3,7,13,17-四甲基卟啉7a(45.1%)和5,15-二(2-联噻吩基)-2,8,12,18-四乙基-3,7,13,17-四甲基卟啉7b(61.2%),并研究了它们的光谱性质,其中荧光光谱的最大发射峰蜂都在631nm处,量子产率分别为4.1%(7a)和1.4%(7b)。 相似文献
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The reactions of 2-nitro-5,10,15,20-tetraphenylporphyrin (1) and its Ni (Ⅱ) (2), Cu (Ⅱ) (3), Zn (Ⅱ) (4) complexes with sodium 2-naphthoxide have been investigated in different solvents for preparing 2-substituted porphyrins. 2-(2-Hydroxynaphthyl)-5,10,15,20-tetraphenyl porphyrin (5) and its Ni (Ⅱ) (6), Cu (Ⅱ) (7), Zn (Ⅱ) (8) complexes were obtained in 72%, 78%, 81% and 65% yields in 2-naphthol at 150 ℃ respectively. The same products were also obtained in other protic solvents such as diglycol and diglycol monomethyl ether. When the reactions proceeded in aprotic solvent DMF at 150 ℃, besides 5 (70%), 6 (34%), 7 (54%) and 8 (50%), the corresponding 2-(2-naphythoxy)-5, 10,15,20-tetraphenylporphyrin (9), and its Ni (Ⅱ) (10), Cu (Ⅱ) (11), Zn (Ⅱ) (12) complexes were also obtained in minor, 40%, 18% and 2% yields respectively, but only 5, 6, 7, 8 were found at room temperature in DMF or DMSO. These reactions axe much faster than those of 1-4 with sodium phenoxide. The formation of C-coupling products 5-8 was proposed via SRN 1 mechanism. 相似文献
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聚2-对丙烯酰氧苯基-5,10,15,20-四苯基卟啉镍的合成 总被引:1,自引:0,他引:1
2-对羟基苯基-5,10,15,20-四苯基卟啉镍(Ⅰ)和2-邻羟基苯基-5,10,15,20-四苯基卟啉镍(Ⅰ′)分别与丙烯酰氯反应,生成了2-对丙烯酰氧苯基-5,10,15,20-四苯基卟啉镍(Ⅱ)和2-邻丙烯酰氧苯基-5,10,15,20-四苯基卟啉镍(Ⅱ′),在引发剂作用下,前者聚合生成了聚2-对丙烯酰氧苯基-5,10,15,20-四苯基卟啉镍(Ⅲ)。通过元素分析、红外光谱、紫外-可见光谱、核磁共振谱和质谱对单体和聚合物的结构进行了表征。 相似文献
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合成并初步研究了新型β-取代卟啉光敏剂2-氢醌-5,10,15,20-四(4-羟基苯基)卟啉锌(II)(Zn(II)P)、2-氢醌-5,10,15,20-四(4-羟基苯基)卟啉铜(II)(Cu(II)P)的抗肿瘤活性。结果表明,2-氢醌-5,10,15,20-四(4-羟基苯基)卟啉锌(II)的合成总产率60%,该光敏剂对慢性骨髓性白血病肿瘤细胞(K562)具有很好的光敏毒性,Zn(II)P的浓度为320mmol/L时,就能抑制90%以上的白血病肿瘤细胞的生长。 相似文献
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The construction of macro-molecular system containing multiple redox centers or photosensitizers is aimportant subject in the design of molecular electronidevices.1,2 For such objectives, systematization of donor-redox center-acceptor triad molecules into largmolecular systems is one of the most feasible approaches, because the exquisite incorporation of thphotosensitizers and suitable electron donors and/oacceptors into a polymeric chain is useful for varioumolecular electronic systems.3-5 Th… 相似文献
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由醇催化转化为长链氯代烷 总被引:1,自引:0,他引:1
采用N,N-二甲基甲酰胺和正十二烷基三甲基氯化铵为催化剂,将正辛醇、正十二醇和正十六醇分别与氯化亚砜反应,得到1-氯正辛烷、1-氯正十二烷和1-氯正十六烷,收率比不用催化剂提高10%~20%,反应速度加快.产物用红外光谱和质子磁共振谱进行了结构表征. 相似文献
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