基于金纳米棒的大规模自组装规整阵列的制备
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- 英文论文题名：Self assembly of large-scale gold nanorods ordered array
- 论文作者：王煜茹 ; 李温涛 ; 魏文博 ; 白锋
- 英文论文作者：Yuru Wang ; Wentao Li ; Wenbo Wei ; Feng Bai ; Key Laboratory for Special Functional Materials of the Ministry of Education ; Henan University
- 年：2016
- 作者机构：河南大学特种功能材料教育部重点实验室;
- 论文关键词：等离激元材料 ; 金纳米棒 ; 自组装 ; SERS
- 英文论文关键词：Plasmonic materials ; Gold nanorod ; Self assembly ; SERS
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：O614.123;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：157k
- 原文格式：D
- 会议级别：全国
摘要
等离激元纳米材料因其对光-材料相互作用的灵敏相应而备受前沿科技探索者的关注,在光传感、光催化、光波导、超透射等领域有巨大的应用潜力。其中,以金纳米棒(GNR)为代表的各向异性等离激元纳米材料由于光响应范围位于可见及近红外光区且易于调制、制备技术成熟等特点成为近年来的重点关注对象,尤其是在作为SERS基底进行痕量监测的生物医疗领域有很大进展。但作为一种信号放大器,基底的增强因子(EF)稳定性对检测结果的可靠性影响很大。我们使用GNR为材料,调控自组装环境,在恒定温度和湿度下可以获得纵向尺度近毫米级单一规整阵列,XRD表征表明其取向有序度超过95%。通过调整组装环境,可以获得单层或多层以及形貌各异的自组装阵列。同时,拉曼测试表明其SERS信号强度和稳定性较高,有望在纳摩尔级范围获得与探针分子浓度的线性相关。另外,这种阵列结构规整响应灵敏,也可成为研究光与等离激元材料相互作用的理想模型。
Gold nanorods, on behalf of anisotropic plasmonic materials, became a recent research focus especially serving as SERS substrate owing to its sensitive and tunable light response in range of visible and near infrared region as well as facile preparation. However, as signal amplifier, the enhance factor(EF) stability of the substrate influenced much on the reliability of detection result. Through adjusting assembly environment, gold nanorod ordering arrays with nearly 1mm width are fabricated under certain temperature and humidity. XRD indicates the orientation degree is more than 95%. Monolayer or multilayer arrays with different morphologies can be fabricated by changing assembly environment. Raman tests show the SERS signal increased and the stability is good, which expected to show linear relationship with the probe molecules in nM range. The regular structure and high light sensibility may make the array a promising model system for research of light-matter interaction.
Gold nanorods, on behalf of anisotropic plasmonic materials, became a recent research focus especially serving as SERS substrate owing to its sensitive and tunable light response in range of visible and near infrared region as well as facile preparation. However, as signal amplifier, the enhance factor(EF) stability of the substrate influenced much on the reliability of detection result. Through adjusting assembly environment, gold nanorod ordering arrays with nearly 1mm width are fabricated under certain temperature and humidity. XRD indicates the orientation degree is more than 95%. Monolayer or multilayer arrays with different morphologies can be fabricated by changing assembly environment. Raman tests show the SERS signal increased and the stability is good, which expected to show linear relationship with the probe molecules in nM range. The regular structure and high light sensibility may make the array a promising model system for research of light-matter interaction.
引文
[1]Ramón A.Alvarez-Puebla,Ashish Agarwal,Pramit Manna,Bishnu P.Khanal.PNAS.2011.108:8161.
[2]Wenbo Wei,Kuan Chen,Guanglu Ge.Advanced Materials.2013,25:3863.
[2]Wenbo Wei,Kuan Chen,Guanglu Ge.Advanced Materials.2013,25:3863.