用UV-vis、FT-IR光谱研究了HAuCl4和酯端基聚酰胺胺(PAMAM)树形分子在N,N-二甲基甲酰胺(DMF)溶剂中的相互作用,提出HAuCl4与树形分子之间的络合机理:[AuCl4]-离子与质子化叔胺基团形成离子对,Au3+离子与PAMAM树形分子上的酯基和酰胺基团形成配位作用.在DMF溶剂中酯端基PAMAM树形分子与HAuCl4配位后用柠檬酸钠还原形成金纳米粒子,UV-vis光谱和TEM图像分析表明了随树形分子代数的增加,金纳米粒子的直径减小,并提出了树形分子-金纳米复合物的结构模型:(1)较低代数的树形分子环绕在金粒子的外围;(2)在较高代数的树形分子空腔内部封装金纳米粒子.
参考文献
| [1] | K R Gopidas;J K Whitesell;M A Fox .Synthesis,characterization and catalytic application of palladium-nanoparticlecored dendrimer[J].Nano Letters,2003,3:1757-1760. |
| [2] | J Wang;G D Liu;M R Jan et al.Electrochemical detection of DNA hybridization based on carbon nanotubes loaded CdS taps[J].Electrochemistry Communications,2003,5(12):1000-1004. |
| [3] | D Li;J H Li .Preparation, characterization and guantized capacitance of 3-mercapto-1,2-propanediol monolayer protected gold nanoparticles[J].Chemical Physics Letters,2003,372:668-673. |
| [4] | Jun Wang;Peter Grundler .The influence of temperature on the interaction between DNA and metal complex at a heated gold-wire microelectrode[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2003(0):153-157. |
| [5] | Xuping Sun;Shaojun Dong;Erkang Wang .One-step synthesis and characterization of polyelectrolyte-protected gold nanoparticles through a thermal process[J].Polymer: The International Journal for the Science and Technology of Polymers,2004(7):2181-2184. |
| [6] | Q T Zhao;L S Hou;R A Huang et al.Controlled growth of gold nanowhiskers via chemistry method[J].Materials Chemistry and Physics,2004,85(01):180-183. |
| [7] | K.Murali Mayya;Nirmesh Jain;Anand Gole;Dominique Langevin;Murali Sastry .Time-dependent complexation of glucose-reduced gold nanoparticles with octadecylamine Langmuir monolayers[J].Journal of Colloid and Interface Science,2004(1):133-139. |
| [8] | D A Tomalia;H Baker;Dewald J et al.Synthesis and characterization of poly ( amidoamine ) dendrimer[J].Polymer Journal,1985,17:117-126. |
| [9] | 徐敏,严晓虎,程鎔时,余学海.树状高分子的特性粘数与代数的关系[J].高分子学报,2003(02):192-194. |
| [10] | 王冰冰,罗宇飞,贾欣茹,龚泳梅,吉岩,杨岭,危岩.扇形PAMAM树枝状高分子的合成与表征[J].高分子学报,2004(02):304-308. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%