应用于局域表面等离激元共振扫描显微探针的球形Au@Ag纳米粒子的合成及介电敏感性检测
局域表面等离激元共振（LSPR）显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag^＋的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚（≥10 nm）的核壳比不同的球形Au@Ag纳米粒子.通过扫描电镜（SEM）、透射电镜（TEM）及扫描透射电子显微镜X射线能谱（STM-EDS）线扫描分析对不同核壳比的Au@Ag纳米粒子进行形貌组成表征,证实了所合成核壳结构的可控性.将不同核壳比的Au@Ag纳米粒子置于不同折射率溶液中进行纳米粒子介电敏感性的研究,表明7.5 nmAu@28 nmAg的纳米结...
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| Published in | 物理化学学报 Vol. 31; no. 8; pp. 1575 - 1583 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
厦门大学化学化工学院化学系,固体表面物理化学国家重点实验室,福建厦门361005
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-6818 |
| DOI | 10.3866/PKU.WHXB201506041 |
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| Abstract | 局域表面等离激元共振（LSPR）显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag^＋的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚（≥10 nm）的核壳比不同的球形Au@Ag纳米粒子.通过扫描电镜（SEM）、透射电镜（TEM）及扫描透射电子显微镜X射线能谱（STM-EDS）线扫描分析对不同核壳比的Au@Ag纳米粒子进行形貌组成表征,证实了所合成核壳结构的可控性.将不同核壳比的Au@Ag纳米粒子置于不同折射率溶液中进行纳米粒子介电敏感性的研究,表明7.5 nmAu@28 nmAg的纳米结构具有最高的品质因子.同时将不同核壳比的Au@Ag纳米粒子置于不同折射率的非导电性基底上进行单颗纳米粒子散射性质的研究,结果表明7.5 nmAu@28 nmAg纳米粒子适合作为LSPR显微探针的高检测灵敏性纳米结构之一. |
|---|---|
| AbstractList | 局域表面等离激元共振（LSPR）显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag^＋的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚（≥10 nm）的核壳比不同的球形Au@Ag纳米粒子.通过扫描电镜（SEM）、透射电镜（TEM）及扫描透射电子显微镜X射线能谱（STM-EDS）线扫描分析对不同核壳比的Au@Ag纳米粒子进行形貌组成表征,证实了所合成核壳结构的可控性.将不同核壳比的Au@Ag纳米粒子置于不同折射率溶液中进行纳米粒子介电敏感性的研究,表明7.5 nmAu@28 nmAg的纳米结构具有最高的品质因子.同时将不同核壳比的Au@Ag纳米粒子置于不同折射率的非导电性基底上进行单颗纳米粒子散射性质的研究,结果表明7.5 nmAu@28 nmAg纳米粒子适合作为LSPR显微探针的高检测灵敏性纳米结构之一. O646; 局域表面等离激元共振(LSPR)显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag*的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚(≥10 nm)的核壳比不同的球形Au@Ag纳米粒子.通过扫描电镜(SEM)、透射电镜(TEM)及扫描透射电子显微镜X射线能谱(STM-EDS)线扫描分析对不同核壳比的Au@Ag纳米粒子进行形貌组成表征,证实了所合成核壳结构的可控性.将不同核壳比的Au@Ag纳米粒子置于不同折射率溶液中进行纳米粒子介电敏感性的研究,表明7.5 nm Au@28 nm Ag的纳米结构具有最高的品质因子.同时将不同核壳比的Au@Ag纳米粒子置于不同折射率的非导电性基底上进行单颗纳米粒子散射性质的研究,结果表明7.5 nm Au@28 nm Ag纳米粒子适合作为LSPR显微探针的高检测灵敏性纳米结构之一. |
| Author | 何茜 唐同丹 易骏 刘必聚 王芳芳 任斌 周剑章 |
| AuthorAffiliation | 厦门大学化学化工学院化学系,固体表面物理化学国家重点实验室,福建厦门361005 |
| AuthorAffiliation_xml | – name: 厦门大学化学化工学院化学系,固体表面物理化学国家重点实验室,福建厦门361005 |
| Author_FL | YI Jun HE Xi TANG Tong-Dan WANG Fang-Fang ZHOU Jian-Zhang REN Bin LIU Bi-Ju |
| Author_FL_xml | – sequence: 1 fullname: HE Xi – sequence: 2 fullname: TANG Tong-Dan – sequence: 3 fullname: YI Jun – sequence: 4 fullname: LIU Bi-Ju – sequence: 5 fullname: WANG Fang-Fang – sequence: 6 fullname: REN Bin – sequence: 7 fullname: ZHOU Jian-Zhang |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.3866/PKU.WHXB201506041 |
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| DocumentTitleAlternate | Spherical Au@Ag Nanoparticles for Localized Surface Plasmon Resonance Scanning Probes： Synthesis and Dielectric Sensitivity |
| DocumentTitle_FL | Spherical Au@Ag Nanoparticles for Localized Surface Plasmon Resonance Scanning Probes: Synthesis and Dielectric Sensitivity |
| EndPage | 1583 |
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| Keywords | Anion-assisted one-step synthesis 单粒子的暗场显微术 Au@Ag nanoparticle Surface plasmon resonance scanning microscopy 表面等离激元共振 Dielectric sensitivity 阴离子辅助一步法合成 介电敏感性 Au@Ag纳米粒子 Dark-filed microscopy of single nanoparticle |
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| Notes | 11-1892/O6 Au@Ag nanoparticle; Anion-assisted one-step synthesis; Surface plasmon resonance scanning microscopy; Dielectric sensitivity; Dark-filed microscopy of single nanoparticle HE Xi,TANG Tong-Dan,YI Jun,LIU Bi-Ju,WANG Fang-Fang,REN Bin,ZHOU Jian-Zhang（State Key Laboratory of Physical Chemistry of Solid Surfaees, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China） The detection sensitivity of localized surface plasmon resonance（LSPR） microscopic probes is mainly determined by the LSPR property of the modified metal nanoparticle at the end of the probe. In this paper, spherical Au@Ag nanoparticles（NPs） with good size uniformity and a thick Ag shell（≥10 nm） were synthesized using the anion-assisted one-step synthesis method in aqueous solution, and the thickness of the Ag shell can be controlled by simply adjusting the molar ratio of Au to Ag in the solution. We characterized the morphology and composition of Au@Ag NPs with di |
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| PublicationTitle | 物理化学学报 |
| PublicationTitleAlternate | Acta Physico-Chimica Sinica |
| PublicationTitle_FL | Acta Physico-Chimica Sinica |
| PublicationYear | 2015 |
| Publisher | 厦门大学化学化工学院化学系,固体表面物理化学国家重点实验室,福建厦门361005 |
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| Snippet | 局域表面等离激元共振（LSPR）显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag^＋的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚（≥10... O646; 局域表面等离激元共振(LSPR)显微探针的检测灵敏性主要取决于针尖上修饰的纳米粒子的LSPR性质.本文采用阴离子辅助法,在水溶液中通过调节Au核与Ag*的物质的量之比,实现Au核上不同厚度的Ag壳层包覆,可控地一步合成均一性好、银壳层较厚(≥10... |
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| SubjectTerms | Au@Ag纳米粒子 介电敏感性 单粒子的暗场显微术 表面等离激元共振 阴离子辅助一步法合成 |
| Title | 应用于局域表面等离激元共振扫描显微探针的球形Au@Ag纳米粒子的合成及介电敏感性检测 |
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