Topic
XANES
About: XANES is a research topic. Over the lifetime, 7737 publications have been published within this topic receiving 188032 citations.
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TL;DR: In this paper, the two-photon induced luminescence of 11-mercaptoundecanoic acid functionalized quantum-sized Au nanodots (11MUA-Au) was investigated via an open aperture Z-scan method.
Abstract: We report here the study of two-photon induced luminescence of 11-mercaptoundecanoic acid functionalized quantum-sized Au nanodots (11MUA-Au nanodots). The X-ray absorption near-edge structure (XANES) measurement at the gold LIII edge indicates that the oxidation state of the surface of 11MUA-Au nanodots is best described as Au+. The two-photon absorption (TPA) property of 11MUA-Au nanodots was then investigated via an open aperture Z-scan method. Together with a precise extinction coefficient (i.e., one-photon absorption) extracted from inductively coupled plasma mass spectrometry, the TPA cross section, σ, was deduced to be 8761 ± 175 GM (800 nm) for 11MUA-Au nanodots (diameter 1.33 ± 0.12) in water. Upon dextran encapsulation, 11MUA-Au nanodots was proved to be highly water-soluble, stable, and low in toxicity, which demonstrated its power in two-photon imaging toward human mesenchymal stem cells (hMSCs) in vitro.
74 citations
TL;DR: In this article, a scalable flame spray pyrolysis (FSP) was used to make monocrystalline copper(II) oxide nanoparticles and analyzed by X-ray diffraction (XRD), nitrogen adsorption (BET), transmission electron microscopy (TEM) and Xray absorption near edge structure (XANES), their primary particle diameter was closely controlled from 6 to 50nm by varying the FSP conditions.
74 citations
TL;DR: In this article, a study of the structure of the Cu(100) surface in the presence of adsorbed oxygen is presented based on new scanned energy mode O 1s photoelectron diffraction measurements in conjunction with qualitative LEED observations and O K-edge NEXAFS characterisation.
74 citations
TL;DR: In this article, the preparation and characterization of zerovalent platinum nanoparticles to be used as precursors for dye-sensitized solar cells (DSSCs) have been carried out.
74 citations
TL;DR: In this article, the authors applied the near-edge X-ray absorption fine structure (NEXAFS) technique to investigate the electronic and structural properties of thin vanadium carbide films on a vanadium (110) singlecrystal surface.
74 citations