Comparative study of the self-assembly of gold and silver nanoparticles onto thiophene oil.
Langmuir
; 30(39): 11520-7, 2014 Oct 07.
Article
em En
| MEDLINE
| ID: mdl-25198286
ABSTRACT
Nanoparticle self-assembly is fundamentally important for bottom-up functional device fabrication. Currently, most nanoparticle self-assembly has been achieved with gold nanoparticles (AuNPs) functionalized with surfactants, polymeric materials, or cross-linkers. Reported herein is a facile synthesis of gold and silver nanoparticle (AgNP) films assembled onto thiophene oil by simply vortex mixing neat thiophene with colloidal AuNPs or AgNPs for â¼1 min. The AuNP film can be made using every type of colloidal AuNPs we have explored, including sodium borohydride-reduced AuNPs with a diameter of â¼5 nm, tannic acid-reduced AuNPs of â¼10 nm diameter, and citrate-reduced AuNPs with particle sizes of â¼13 and â¼30 nm diameter. The AuNP film has excellent stability and it is extremely flexible. It can be stretched, shrunken, and deformed accordingly by changing the volume or shape of the enclosed thiophene oil. However, the AgNP film is unstable, and it can be rapidly discolored and disintegrated into small flakes that float on the thiophene surface. The AuNP and AgNP films prepared in the glass vials can be readily transferred to glass slides and metal substrates for surface-enhanced Raman spectral acquisition.
Texto completo:
1
Base de dados:
MEDLINE
Idioma:
En
Revista:
Langmuir
Assunto da revista:
QUIMICA
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Estados Unidos