Hybrid Gold-Nanoparticle-Cored Conjugated Thiophene Dendrimers: Synthesis, Characterization, and Energy-Transfer Studies
作者:Suxiang Deng、Timothy M. Fulghum、Greg Krueger、Derek Patton、Jin-Young Park、Rigoberto C. Advincula
DOI:10.1002/chem.201100246
日期:2011.8.1
A series of hybrid Au‐nanoparticle‐dendrimer materials: nanoparticle‐cored thiophene dendrimers (NCTDs) were synthesized, characterized, and investigated for their energy‐transfer properties. These hybrid nanoparticles were obtained by the simultaneous and in situ reduction of gold(III) chloride and self‐assembly of the thiol‐containing thiophene dendritic ligands. The dendron ligands were radially
合成,表征和研究了一系列杂化的金纳米粒子树状聚合物材料:纳米粒子核心的噻吩树状聚合物(NCTD)。这些杂化的纳米颗粒是通过同时还原氯化金(III)和含硫醇的噻吩树枝状配体的自组装而获得的。将树枝状配体径向附着在金纳米颗粒上,并通过TEM,UV / Vis,1分析1 H NMR和FTIR光谱。附着的噻吩树突的溶液荧光逐渐淬灭。烷基链长度和树突尺寸均对能量转移效率以及金纳米颗粒的核尺寸和尺寸分布有重要影响。尽管该现象依赖于纳米颗粒尺寸,但是能量转移通常遵循1 / d 2距离依赖关系。单个NCTD纳米颗粒也被吸附在高度有序的热解石墨(HOPG)上,并且在云母平板基底上观察到均匀的聚集体。