Self-assembly of a dithiocarbamate calix[4] arene on Ag nanoparticles and its application in the fabrication of surface-enhanced Raman scattering based nanosensors

被引：46
作者：
Guerrini, Luca [1 ]
Garcia-Ramos, Jose V. [1 ]
Domingo, Concepcion [1 ]
Sanchez-Cortes, Santiago [1 ]
机构：
[1] CSIC, Inst Estruct Mat, Madrid 28006, Spain
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2009年 / 11卷 / 11期
关键词：
CALIXARENE BUILDING-BLOCKS; POLYCYCLIC AROMATIC-HYDROCARBONS; VIBRATIONAL-SPECTRA; CONFORMATIONAL ISOMERISM; METAL-IONS; SPECTROSCOPY; GOLD; SILVER; HOST; SERS;
D O I：
10.1039/b812811a
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The absorption and self-assembly of a dithiocarbamate calix[4] arene derivative (DTCX) on Ag nanoparticles (NPs) was characterized in this work by surface-enhanced Raman scattering (SERS). This study was carried out on Ag NPs prepared by chemical reduction of silver nitrate with two different reducing agents: sodium citrate or hydroxylamine hydrochloride. SERS was able to discriminate between the different conformations and interaction geometries adopted by DTCX when adsorbed and self-assembled on Ag NPs at different surface coverings. The identification of structural marker bands was crucial in this study. Furthermore, the structure adopted by DTCX is important to determine the activity of this calixarene as a molecular host to detect pollutants, such as pyrene (PYR), since an excessively open or closed cavity is not efficient regarding the analyte detection.
引用
收藏
页码：1787 / 1793
页数：7
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