Gold nanoparticles driven self-assembling hydrogel via Host-Guest system
Gold nanoparticles driven self-assembling hydrogel via Host-Guest system
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DOI：
10.1016/j.molstruc.2019.127063
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发表时间：
2020-01-15
影响因子：
3.8
通讯作者：
Al-mahamad, Lamia L. G.
中科院分区：
文献类型：
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作者：
Al-mahamad, Lamia L. G.
在这项工作中，一类新的主-客体聚合物已被合成和表征的基础上制备Au（I）：6-硫代鸟苷水凝胶（主机），携带金纳米颗粒AuNPs（客体）。用原子力显微镜（AFM）技术研究了聚合物的形貌。图像显示在用AuNP处理后，水凝胶的线性聚合物转化为星形形状。对AFM图像进行统计分析，以研究聚合物的高度。数据显示，新聚合物的高度纤维类似于1.5 nm，存在8-15 nm范围内的新高度，其属于凝胶中AuNP的实体。此外，新聚合物表现出典型的直径（1.5nm），其低于没有AuNP的聚合物的直径。在用AuNP处理时，AuNP的存在导致水凝胶的荧光从606 nm淬灭至511 nm。这些观察结果证实了AuNP分子内相互作用对Au（I）水凝胶的形态和光学性质的影响。(C)2019爱思唯尔B. V.保留所有权利。
In this work, a new class of host-guest polymer has been synthesised and characterized based on preparation Au(I):6-thioguanosine hydrogel (host) that is carrying gold nanoparticles AuNPs (guest). The morphology of the formed polymer was investigated with Atomic Force Microscopy (AFM) technique. The images displayed converting the linear polymer of the hydrogel to the stars-like shape upon treating with AuNPs. Statistical analysis was achieved for the AFM images to investigate the height of the polymer. The data revealed that the height fibre of the new polymer was similar to 1.5 nm with presence new heights in the range of 8-15 nm which are belong to the entities of AuNPs in the gel. Also, the new polymer exhibits typical diameter (1.5 nm) which is lower than the diameter of the polymer without AuNPs. The presence of AuNPs causes quenching the fluorescence of the hydrogel from 606 nm to 511 nm upon treating with AuNPs. These observations confirm the effect of intramolecular interactions of AuNPs on the morphology and the optical properties of the Au(I) hydrogel. (C) 2019 Elsevier B.V. All rights reserved.