银纳米板中狭长间隙的构建

Construction of Long Narrow Gaps in Ag Nanoplates.

作者信息

Jiang Tao, Chen Gang, Tian Xiaoli, Tang Shiwei, Zhou Jun, Feng Yuhua, Chen Hongyu

机构信息

Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , Nanjing 211816 , People's Republic of China.

Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Republic of Singapore.

出版信息

J Am Chem Soc. 2018 Nov 21;140(46):15560-15563. doi: 10.1021/jacs.8b06969. Epub 2018 Nov 8.

DOI:10.1021/jacs.8b06969

PMID:30392369

Abstract

Hexagonal Ag nanoplates with long and ultranarrow gaps (about 90 nm in length, 2 nm in width) are synthesized via seed-mediated growth method. By growing around the polymer shell on the seed, the Ag domain cannot merge at the meet-up point, leaving a long narrow gap in the resulting plate. These gapped nanoplates exhibit high sensitivity in SERS detection, with limitation of 10 M for 2-naphthalenethiol.

摘要

通过种子介导生长法合成了具有长且超窄间隙（长度约90纳米，宽度2纳米）的六边形银纳米片。通过在种子上的聚合物壳周围生长，银域在相遇点处无法合并，从而在所得的纳米片中留下长的窄间隙。这些带间隙的纳米片在表面增强拉曼光谱（SERS）检测中表现出高灵敏度，对2-萘硫醇的检测限为10⁻⁸ M。