Size distribution analysis of colloidal gold by small angle X-ray scattering and light absorbance

Gold–conductive polymer nanoparticles: A hybrid material with enhanced photonic reactivity to environmental stimuli

“…The apparent diameter and dispersity of gold and composite nanoparticles were deduced from published relationships between the visual spectrum characteristics and actual size measurements by transmission electron microscopy [18,19] and small-angle X-ray scattering [19] of sets of colloidal gold preparations with various sizes. The training sets of nanoparticles used to derive the relationships were homeodisperse preparations respectively characterized by the following actual sizes and dispersities: 12.0 ± 2.7; 25 ± 4.6; 40 ± 7.2; 50 ± 10.0; 63 ± 11.3; 77 ± 14.3; 92.0 ± 19.0 nm [18] and 5.0 ± 0.7; 14 ± 8.7; 22 ± 2.2; 32 ± 3.5; 40 ± 3.4; 57 ± 6.7; 95 ± 6.3; 102.0 ± 8.0 nm [19].…”

“…The training sets of nanoparticles used to derive the relationships were homeodisperse preparations respectively characterized by the following actual sizes and dispersities: 12.0 ± 2.7; 25 ± 4.6; 40 ± 7.2; 50 ± 10.0; 63 ± 11.3; 77 ± 14.3; 92.0 ± 19.0 nm [18] and 5.0 ± 0.7; 14 ± 8.7; 22 ± 2.2; 32 ± 3.5; 40 ± 3.4; 57 ± 6.7; 95 ± 6.3; 102.0 ± 8.0 nm [19]. The average sizes of the nanoparticles (d av ) were estimated from the relationship between the λ max and actual size (r = 0.94), d av (nm) = λ max (nm) − 511.5 0.399 , and the dispersity (σ ) was estimated from the relationship between the ratio A 600 nm /Aλ max and actual dispersity (r = 0.99),…”

“…from the optical spectrum [18,19]. From the optical density at the λ max , the solution was estimated to contain 6 × 10 11 particles per milliliter [21].…”

Acquisition of a Small Angle X-ray Scattering (SAXS) System for the Study of Nanostructured Materials

“…Under diis program, die foEowing accompHshments have been achieved: (1) The acquired SAXS system was successfidly instaUed and is now in operational condition; a short training course was provide to graduate students and faculty; (2) mediods for interpretation of experimental SAXS data was developed using Madiematica Analysis; (3) lattice spacing at a large scale was determined using die SAXS; (4) interface between ceramic and metal was characterized, in particular in interface geometry and nano-voids; (5) crystalline phase size distributed in amorphous matrix was analyzed; and (6) ctystaEization behavior was investigated in combination with DSC and TEM. This final report covers the progress made during the period from April 01, 2001 -March 31, 2003.…”

A General Perspective of the Characterization and Quantification of Nanoparticles: Imaging, Spectroscopic, and Separation Techniques

“…[125][126][127] UV-vis spectroscopy allows to determine not only composition information but also the NPs size and shape from the absorbance spectra. 128 The NPs size can be determined by studying the shape and position of the localized surface plasmon resonance (LSPR) peak. 129 Some examples are now discussed.…”