Science (American Association for the Advancement of Science), 2001-11, Vol.294 (5548), p.1901-1903
2001
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Details
- Autor(en) / Beteiligte
- Titel
- Photoinduced Conversion of Silver Nanospheres to Nanoprisms
- Ist Teil von
- Science (American Association for the Advancement of Science), 2001-11, Vol.294 (5548), p.1901-1903
- Ort / Verlag
- Washington, DC: American Society for the Advancement of Science
- Erscheinungsjahr
- 2001
- Quelle
- American Association for the Advancement of Science
- Beschreibungen/Notizen
- A photoinduced method for converting large quantities of silver nanospheres into triangular nanoprisms is reported. The photo-process has been characterized by time-dependent ultraviolet-visible spectroscopy and transmission electron microscopy, allowing for the observation of several key intermediates in and characteristics of the conversion process. This light-driven process results in a colloid with distinctive optical properties that directly relate to the nanoprism shape of the particles. Theoretical calculations coupled with experimental observations allow for the assignment of the nanoprism plasmon bands and for the first identification of two distinct quadrupole plasmon resonances for a nanoparticle. Unlike the spherical particles they are derived from that Rayleigh light-scatter in the blue, these nanoprisms exhibit scattering in the red, which could be useful in developing multicolor diagnostic labels on the basis not only of nanoparticle composition and size but also of shape.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0036-8075eISSN: 1095-9203DOI: 10.1126/science.1066541Titel-ID: cdi_proquest_miscellaneous_743369453
- Format
- –
- Schlagworte
- Anisotropy, Composite particles, Condensed matter: electronic structure, electrical, magnetic, and optical properties, Crystallization, Diagnostic Techniques and Procedures, Exact sciences and technology, Experiments, HeLa cells, Irradiation, Lasers, Light, Logical Thinking, Microscopy, Electron, Nanocrystals, Nanocrystals and nanoparticles, Nanoparticles, Nanotechnology, Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation, Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures, Photochemistry - methods, Physics, Plasmons, Quadrupoles, Resonance, Scattering, Radiation, Scientific imaging, Silver, Silver - chemistry, Spectroscopy, Tungsten, Wavelengths