Solvent and ligand effects on the optical properties of silver nanoparticles in silica sol-gel films

2009 ◽  
Author(s):  
J. A. García-Macedo ◽  
V. M. Rentería-Tapia ◽  
G. Valverde-Aguilar
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Sol Gel ◽  
Silica Sol ◽  
Ligand Effects ◽  
Sol Gel Films

Features of spectroscopy and formation process of silica sol–gel films doped with silver nanoparticles

2002 ◽  
Vol 341 (1-2) ◽  
pp. 208-210 ◽  
Author(s):  
D.L Kovalenko ◽  
V.S Gurin ◽  
N.E Bogdanchikova ◽  
V.B Prokopenko ◽  
A.A Alexeenko ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Formation Process ◽  
Sol Gel ◽  
Silica Sol ◽  
Sol Gel Films

Photodegradation of rhodamine 6G dimers in silica sol–gel films

2013 ◽  
Vol 271 ◽  
pp. 93-98 ◽  
Author(s):  
Barbara Lasio ◽  
Luca Malfatti ◽  
Plinio Innocenzi
Keyword(s):  
Rhodamine 6G ◽  
Sol Gel ◽  
Silica Sol ◽  
Sol Gel Films

Optical properties of organic/inorganic nanocomposite sol-gel films containing LaPO4:Er,Yb nanocrystals

2006 ◽  
Vol 28 (4) ◽  
pp. 374-379 ◽  
Author(s):  
Bok Yeop Ahn ◽  
Sang Il Seok ◽  
Suk-In Hong ◽  
Jae-Seok Oh ◽  
Ha-Kyun Jung ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Sol Gel Films

Inorganic Quantum Dot - Organic Dendrimer Nanocomposite Materials

1999 ◽  
Vol 576 ◽  
Author(s):  
K. Sooklal ◽  
J. Huang ◽  
C. J. Murphy ◽  
L. Hanus ◽  
H. J. Ploehn
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Quantum Dot ◽  
Sol Gel ◽  
Nanocomposite Materials ◽  
Silica Sol ◽  
Semiconductor Quantum Dots ◽  
Current Interest ◽  
Cds Quantum Dots ◽  
Bright Blue

ABSTRACTSemiconductor quantum dots are of great current interest for their optical properties. We have developed a method for preparing CdS quantum dots in commercially available PAMAM Starburst dendrimers. The resulting CdS-dendrimer nanocomposites are exceptionally stable and emit brightly in the blue. The size of the dendrimer (its “generation”) has a surprisingly small effect on the optical properties of the resulting nanocomposites. The dot-dendrimer nanocomposites can be captured in a silica sol-gel matrix to yield a stable, bright blue-emitting glass.

Influence of Oxygen on the Optical Properties of Silver Nanoparticles

2008 ◽  
Vol 8 (12) ◽  
pp. 6545-6550 ◽  
Author(s):  
V. M. Rentería-Tapia ◽  
J. García-Macedo
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Metallic Nanoparticles ◽  
Silver Oxide ◽  
Sol Gel ◽  
Oxygen Atmosphere ◽  
Oxide Shell ◽  
Metallic Surface ◽  
Oxidizing Atmosphere ◽  
Vis Spectroscopy

Silver nanoparticles in sol–gel silica films were obtained by annealing in hydrogen atmosphere and subsequently in oxygen atmosphere. Their properties were measured by UV-vis spectroscopy, transmission electron microscopy (TEM), high-resolution transmission electronic microscopy (HRTEM) and X-ray diffraction analysis. Samples prepared in a reducing atmosphere exhibited a surface plasmon resonance (SPR) located at 399 nm. Silver nanoparticles in an oxidizing atmosphere exhibited a red shift and damping of the SPR. These optical properties were explained due to the oxidation on the surface of silver nanoparticles to silver oxide yield in an oxygen atmosphere. Silver core–silver oxide shell nanostructures were observed by HRTEM. The average size of the metallic nanoparticles obtained by TEM was used for modeling the UV-vis spectra by using the Gans theory. Good fits to the spectra under an oxidizing atmosphere were obtained considering variable refractive indexes coming from the silver oxide shells surrounding to the nanoparticles. Therefore, the interaction between oxygen and the metallic surface of the nanoparticles, sensitively alters their optical properties.

scholarly journals Influence of rhodamine 6G doping on the optical properties of TiO2 sol-gel films

2005 ◽  
Vol 98 (7) ◽  
pp. 073516 ◽  
Author(s):  
S. A. Tomás ◽  
S. Stolik ◽  
R. Palomino ◽  
R. Lozada ◽  
C. Persson ◽  
...  
Keyword(s):  
Optical Properties ◽  
Rhodamine 6G ◽  
Sol Gel ◽  
Tio2 Sol ◽  
Sol Gel Films

scholarly journals Optical properties of sol-gel coatings containing silver nanoparticles

2020 ◽  
Vol 911 ◽  
pp. 012007
Author(s):  
S N Stepin ◽  
T A Xolmurodov ◽  
O O Mirzaev ◽  
V E Katnov
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Sol Gel
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