Effect of pH and generation of dendron on single‐step synthesis of gold nanoparticles using PEGylated polyamidoamine dendron in aqueous medium

Effect of pH and generation of dendron on single‐step synthesis of gold nanoparticles using PEGylated polyamidoamine dendron in aqueous medium
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pH 值和树枝状分子生成对在水介质中使用聚乙二醇化聚酰胺胺树枝状分子一步合成金纳米颗粒的影响

DOI:
10.1002/pola.23901
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发表时间:
2010
期刊:
Journal of Polymer Science Part A
影响因子:
--
通讯作者:
K. Kono
K. Kono
中科院分区:
--
文献类型:
--
作者:
Atsushi Harada;Akihiko Yuzawa;Takeshi Kato;C. Kojima;K. Kono

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通过在第二、第三和第四代树枝状基元的外围对伯胺进行聚乙二醇化,合成了三种类型的聚乙二醇化聚酰胺-胺(PAMAM)树枝状基元。将Au(III)前体和合成的PEG化PAMAM树枝状分子在各种pH下混合,以通过监测表面等离子体共振的变化来评估pH对金纳米颗粒(Au NP)合成的影响。Au NP的合成反应是由pH值通过质子化和去质子化叔胺之间的平衡和Au(III)前体的反应性控制。通过使用具有较高代数的PEG化PAMAM树枝状基元,由于PEG化PAMAM树枝状基元之间的分子间空间对于生长为Au NP的限制,所获得的Au NP具有窄的尺寸分布和小的平均尺寸。© 2010 Wiley Periodicals,Inc. J Polym Sci Part A:Polym Chem 48:1391-1398,2010
Three types of PEGylated polyamidoamine (PAMAM) dendrons were synthesized through PEGylation of primary amines at the periphery of second, third, and fourth generation dendrons. Au(III) precursors and the synthesized PEGylated PAMAM dendrons were mixed at various pHs to evaluate the effect of pH on gold nanoparticle (Au NP) synthesis by monitoring the change in surface plasmon resonance. The Au NP synthesis reaction was controlled by pH through the balance between protonated and deprotonated tertiary amines and the reactivity of Au(III) precursors. By using PEGylated PAMAM dendrons with higher generation, the obtained Au NPs had narrow size distribution with small average size because of the limitation of intermolecular space among PEGylated PAMAM dendrons for the growth to Au NP. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 1391–1398, 2010
DOI: 10.1021/ma030349h
发表时间: 2004-05
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影响因子: 5.5
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