A new, simple, green, and one-pot four-component synthesis of bare and poly(α,γ, L-glutamic acid)-capped silver nanoparticles.
A new, simple, green, and one-pot four-component synthesis of bare and poly(α,γ, L-glutamic acid)-capped silver nanoparticles.
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DOI：
10.1007/s00396-011-2540-7
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发表时间：
2012-02-01
影响因子：
2.4
通讯作者：
Uskoković D
中科院分区：
文献类型：
--
作者：
Stevanović M;Savanović I;Uskoković V;Skapin SD;Bračko I;Jovanović U;Uskoković D
利用葡萄糖还原银离子，聚（α,γ， l -谷氨酸）（PGA）盖层，建立了一种简单、绿色的化学方法来合成稳定的裸和盖层纳米银。在合成过程中避免了氨的使用。PGA在银纳米颗粒的合成中具有双重作用，它可以作为一种封盖剂，使银纳米颗粒具有更强的生物相容性，并防止纳米颗粒在液体介质中结块。合成的pga包覆的银纳米颗粒在5-45 nm的尺寸范围内长期稳定，没有沉淀的迹象。形态学检查表明，银纳米颗粒具有近球形、多重孪晶结构。考察了反应温度和反应时间对合成过程的影响。从体外对人肠道Caco-2细胞的毒性角度讨论了pga包覆银纳米颗粒的生物相容性。通过紫外可见光谱、场发射扫描电镜、透射电镜和zeta电位测量对样品进行了表征。
A simple and green chemical method has been developed to synthesize stable bare and capped silver nanoparticles based on the reduction of silver ions by glucose and capping by poly(α,γ,L-glutamic acid) (PGA). The use of ammonia during synthesis was avoided. PGA has had a dual role in the synthesis and was used as a capping agent to make the silver nanoparticle more biocompatible and to protect the nanoparticles from agglomerating in the liquid medium. The synthesized PGA-capped silver nanoparticles in the size range 5–45 nm were stable over long periods of time, without signs of precipitation. Morphological examination has shown that the silver nanoparticles had a nearly spherical, multiply twinned structure. The effects of the reaction temperature and the reaction time during the synthesis were investigated too. The biocompatibility of the PGA-capped silver nano-particles is discussed in terms of in vitro toxicity with human intestinal Caco-2 cells. The samples were characterized by UV–Visible spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and zeta potential measurements.
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影响因子：
4.4
作者：
Hao, E;Schatz, GC
通讯作者：
Schatz, GC
DOI：
10.3390/s100706535
发表时间：
2010
期刊：
Sensors (Basel, Switzerland)
影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/j.saa.2011.05.007
发表时间：
2011-09-01
影响因子：
4.4
作者：
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通讯作者：
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