Surface-enhanced Raman Scattering (SERS) Effect of Hexagonally Arranged Gold Nanoparticle Array with 29-nm Particles and 23-nm Gaps Using Liquid-crystalline Block-copolymer Template
Surface-enhanced Raman Scattering (SERS) Effect of Hexagonally Arranged Gold Nanoparticle Array with 29-nm Particles and 23-nm Gaps Using Liquid-crystalline Block-copolymer Template
复制标题
使用液晶嵌段共聚物模板的具有 29 nm 颗粒和 23 nm 间隙的六角形排列的金纳米颗粒阵列的表面增强拉曼散射 (SERS) 效应
DOI：
10.1246/cl.2013.71
复制
发表时间：
2013-01-05
影响因子：
1.6
通讯作者：
Watanabe, Shigeru
中科院分区：
文献类型：
--
作者：
Hadano, Shingo;Handa, Hiroshige;Watanabe, Shigeru
采用嵌段共聚物模板法在硅片衬底上制备了粒径为29 nm、间隙为23 nm的六边形排列金纳米粒子阵列。基于表面增强拉曼散射（SERS）检测了其分子传感能力。以4-磺酰吡啶（4-Spy）为靶分子，该阵列的SERS增强因子（EF）为7.0 × 104。SERS信号与4-Spy的量呈线性关系，动态范围为4个数量级。高度可重复的SERS传感源于整个衬底上有序的金纳米颗粒排列。
A hexagonally arranged gold nanoparticle array with a particle size of 29 nm and gap of 23 nm was fabricated on a silicon wafer substrate through the block-copolymer templating method. Its molecular sensing ability was examined on the basis of surface-enhanced Raman scattering (SERS). With 4-sulfanylpyridine (4-Spy) used as a target molecule, the SERS enhancement factor (EF) for this array was 7.0 x 104. A linear relationship between the SERS signal and the amount of 4-Spy was obtained, with a dynamic range of four orders of magnitude. The highly reproducible SERS sensing originates from the well-ordered gold nanoparticle arrangement over the whole substrate.