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Gold and silver nanorings formed at the air/water interface
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Jan2008, Vol. 312 Issue 2/3, p203-208. 6p. - Publication Year :
- 2008
-
Abstract
- Abstract: Gold nanorings were prepared at the air/water interface through reduction of AuCl4 − ions by UV-light irradiation or formaldehyde gas treatment at room temperature templated by thin films of phthalocyanine derivatives. Silver nanorings were produced at the air/water interface via reduction of Ag+ ions by UV-light irradiation templated by poly(9-vinylcarbazole) (PVK) thin films. These nanostructures were investigated by transmission electron microscopy (TEM), selective-area electron diffractometry (SAED), and high-resolution TEM (HRTEM). It was found that the gold nanorings are composed of close-packed nanoplates whose (110) crystal planes are parallel to the air/water interface; while silver rings are composed of nanoparticles. It is demonstrated that the ring-like aggregates formed by parallel linear supramolecules of the phthalocyanine derivatives and the ring-like structure of PVK supramolecules are responsible for the formation of the gold and silver nanorings, respectively. [Copyright &y& Elsevier]
- Subjects :
- *IRRADIATION
*THIN films
*OBSTRUCTIONS of lighting
*ELECTRONS
Subjects
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 312
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 27945176
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2007.06.051