Synthesis of silver nanoprisms in DMF
Synthesis of silver nanoprisms in DMF
复制标题
DOI：
10.1021/nl025638i
复制
发表时间：
2002-08-01
期刊：
影响因子：
10.8
通讯作者：
Liz-Marzán, LM
中科院分区：
文献类型：
--
作者：
Pastoriza-Santos, I;Liz-Marzán, LM
在聚乙烯吡咯烷酮的存在下，通过将AgNO 3在N，N-二甲基甲酰胺中煮沸来合成多角形（主要是三角形）银纳米棱镜。虽然在合成过程中，形成了纳米棱柱和纳米球的混合物，但后者可以通过小心离心除去。纳米棱镜的紫外-可见光谱显示出强烈的面内偶极等离子体共振带，以及面内和面外四极共振的弱带。纳米棱镜在其他溶剂中也是稳定的，例如乙醇和水，溶剂交换导致平面内偶极等离子体激元带的强烈位移。
Polygonal (mainly triangular) silver nanoprisms were synthesized by boiling AgNO3 in N,N-dimethyl formamide, in the presence of poly(vinylpyrrolidone). Although during the synthesis, a mixture of nanoprisms and nanospherolds is formed, the latter can be removed through careful centrifugation. The UV-visible spectra of the nanoprisms display an intense in-plane dipolar plasmon resonance band, as well as weak bands for in-plane and out-of-plane quadrupolar resonances. The nanoprisms are also stable in other solvents, such as ethanol and water, and solvent exchange leads to strong shifts of the in-plane dipole plasmon band.