X-Ray Absorption of Gold Nanoparticles with Thin Silica Shell

2006 ◽  
Vol 6 (11) ◽  
pp. 3503-3506 ◽  
Author(s):  
Yeon-Su Park ◽  
Luis M. Liz-Marzán ◽  
Atsuo Kasuya ◽  
Yoshio Kobayashi ◽  
Daisuke Nagao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Silica Shell ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Direct Conjugation of Resveratrol on Hydrophilic Gold Nanoparticles: Structural and Cytotoxic Studies for Biomedical Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1898
Author(s):  
Iole Venditti ◽  
Giovanna Iucci ◽  
Ilaria Fratoddi ◽  
Manuela Cipolletti ◽  
Emiliano Montalesi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Conjugated Systems ◽  
Cell Vitality ◽  
Anticancer Effects ◽  
Radiation Induced ◽  
Ft Ir ◽  
Cytotoxic Studies ◽  
X Ray Absorption

Strongly hydrophilic gold nanoparticles (AuNPs), functionalized with citrate and L-cysteine, were synthetized and used as Resveratrol (RSV) vehicle to improve its bioavailability. Two different conjugation procedures were investigated: the first by adding RSV during AuNPs synthesis (1) and the second by adding RSV after AuNPs synthesis (2). The two different conjugated systems, namely AuNPs@RSV1 and AuNPs@RSV2 respectively, showed good loading efficiency (η%): η1 = 80 ± 5% for AuNPs@RSV1 and η2 = 20 ± 3% for AuNPs@RSV2. Both conjugated systems were investigated by means of Dynamic Light Scattering (DLS), confirming hydrophilic behavior and nanodimension (<2RH> 1 = 45 ± 12 nm and <2RH> 2 = 170 ± 30 nm). Fourier Transform Infrared Spectroscopy (FT-IR), Synchrotron Radiation induced X-Ray Photoelectron Spectroscopy (SR-XPS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) techniques were applied to deeply understand the hooking mode of RSV on AuNPs surface in the two differently conjugated systems. Moreover, the biocompatibility of AuNPs and AuNPs@RSV1 was evaluated in the concentration range 1.0–45.5 µg/mL by assessing their effect on breast cancer cell vitality. The obtained data confirmed that, at the concentration used, AuNPs do not induce cell death, whereas AuNPs@RSV1 maintains the same anticancer effects as the unconjugated RSV.

scholarly journals Tandem X-ray absorption spectroscopy and scattering for in situ time-resolved monitoring of gold nanoparticle mechanosynthesis

2020 ◽  
Vol 56 (71) ◽  
pp. 10329-10332 ◽  
Author(s):  
Paulo F. M. de Oliveira ◽  
Adam A. L. Michalchuk ◽  
Ana Guilherme Buzanich ◽  
Ralf Bienert ◽  
Roberto M. Torresi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Absorption Spectroscopy ◽  
Mechanochemical Synthesis ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Absorption

A new tandem approach combines XRD and XANES for time-resolved in situ monitoring of the mechanochemical synthesis of gold nanoparticles.

Effect of gold nanoparticles on lead zinc niobate–barium titanate structure by X-ray absorption spectroscopy

2017 ◽  
Vol 520 (1) ◽  
pp. 196-201
Author(s):  
Phakkhananan Pakawanit ◽  
Rattikorn Yimnirun ◽  
Yongyut Laosiritaworn ◽  
Kanokwan Kanchiang
Keyword(s):  
Gold Nanoparticles ◽  
Barium Titanate ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Lead Zinc Niobate ◽  
Lead Zinc ◽  
X Ray Absorption

scholarly journals Probing the Limits of Conventional Extended X-ray Absorption Fine Structure Analysis Using Thiolated Gold Nanoparticles

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 4036-4042 ◽  
Author(s):  
Samuel T. Chill ◽  
Rachel M. Anderson ◽  
David F. Yancey ◽  
Anatoly I. Frenkel ◽  
Richard M. Crooks ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Fine Structure ◽  
Structure Analysis ◽  
X Ray ◽  
Absorption Fine ◽  
Fine Structure Analysis ◽  
X Ray Absorption

scholarly journals Enhanced X-ray absorption by using gold nanoparticles in a biological tissue

2015 ◽  
Vol 50 (4) ◽  
pp. 281-285 ◽  
Author(s):  
A. Berrezoug ◽  
A.S. A Dib ◽  
A.H. Belbachir
Keyword(s):  
Gold Nanoparticles ◽  
Biological Tissue ◽  
X Ray ◽  
X Ray Absorption

Tricarbonyls of Low-Coordinated Au(0) Atoms in Zeolite-Supported Gold Nanoparticles:  Evidence from Infrared and X-ray Absorption Spectroscopies

Langmuir ◽  
2006 ◽  
Vol 22 (9) ◽  
pp. 4310-4314 ◽  
Author(s):  
Bruce G. Anderson ◽  
Juan C. Fierro-Gonzalez ◽  
Kanaparthi Ramesh ◽  
C. P. Vinod ◽  
J. W. Niemantsverdriet ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
X Ray ◽  
Supported Gold Nanoparticles ◽  
Supported Gold ◽  
X Ray Absorption

Temperature Determination of Resonantly Excited Plasmonic Branched Gold Nanoparticles by X-ray Absorption Spectroscopy

Small ◽  
2011 ◽  
pp. n/a-n/a ◽  
Author(s):  
Bieke Van de Broek ◽  
Didier Grandjean ◽  
Jesse Trekker ◽  
Jian Ye ◽  
Kris Verstreken ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Temperature Determination ◽  
X Ray Absorption

scholarly journals Probing the dynamics of plasmon-excited hexanethiol-capped gold nanoparticles by picosecond X-ray absorption spectroscopy

2014 ◽  
Vol 16 (42) ◽  
pp. 23157-23163 ◽  
Author(s):  
Flavio Zamponi ◽  
Thomas J. Penfold ◽  
Maarten Nachtegaal ◽  
Andrea Lübcke ◽  
Jochen Rittmann ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Absorption Spectroscopy ◽  
Optical Excitation ◽  
Au Nps ◽  
X Ray ◽  
X Ray Absorption

The onset of disorder 100 ps after optical excitation of small Au NPs was revealed by X-ray absorption spectroscopy.

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