Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)
Formation of Au nanoparticle arrays on hydrogel two-dimensional patterns based on poly(vinylpyrrolidone)
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DOI：
10.7567/jjap.56.06gg06
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发表时间：
2017-05
影响因子：
1.5
通讯作者：
S. Tsukuda;K. Okamoto;Hiroki Yamamoto;T. Kozawa;T. Omata
中科院分区：
文献类型：
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作者：
S. Tsukuda;K. Okamoto;Hiroki Yamamoto;T. Kozawa;T. Omata
在这项研究中，我们证明了Au纳米粒子（NP）阵列的形成的二维凝胶图案的基础上，聚（乙烯吡咯烷酮）（PVP），这是由电子束（EB）光刻制造。Au NPs优先形成PVP图案通过光还原在HAuCl 4-含有MeOH溶液中没有任何表面处理。通过改变UV照射时间高度控制Au NP的数量密度;因此，增加UV照射时间产生在PVP图案上具有高度填充的Au NP的Au NP阵列。PVP交联网络的大小取决于EB辐射诱导的交联密度，在紫外光照射下含Au离子溶液中形成Au纳米粒子的过程中起着非常重要的作用。我们讨论了在不同的EB曝光剂量的凝胶网络和形成的Au NP之间的相互作用方面的差异，在制造的Au NP阵列。
In this study, we demonstrated the formation of Au nanoparticle (NP) arrays on two-dimensional gel patterns based on poly(vinylpyrrolidone) (PVP), which were fabricated by electron beam (EB) lithography. Au NPs were preferentially formed on PVP patterns by photoreduction in HAuCl4-containing MeOH solutions without any surface treatment. The number density of the Au NPs was highly controlled by changing the UV irradiation time; therefore, increasing the UV irradiation time produced Au NP arrays with highly packed Au NPs on the PVP patterns. The size of the cross-linking networks of PVP, which depended on the cross-linking density induced by EB irradiation, plays a very important role in the formation of Au NPs in the Au ion-containing solution under UV irradiation. We discussed the difference in the fabricated Au NP arrays at different EB exposure doses in terms of the interaction between the gel networks and the Au NPs formed.