Atomic Structure of Au 329 (SR) 84 Faradaurate Plasmonic Nanomolecules

Kumara, Chanaka; Zuo, Xiaobing; Ilavsky, Jan; Cullen, David A.; Dass, Amala

doi:10.1021/jp512910a

Atomic Structure of Au 329 (SR) 84 Faradaurate Plasmonic Nanomolecules

Journal Article · Thu May 21 04:00:00 EDT 2015 · Journal of Physical Chemistry. C

DOI:https://doi.org/10.1021/jp512910a· OSTI ID:1239689

Kumara, Chanaka; Zuo, Xiaobing; Ilavsky, Jan; Cullen, David A.; Dass, Amala

To design novel nanomaterials, it is important to precisely control the composition, determine the atomic structure, and manipulate the structure to tune the materials property. Here we present a comprehensive characterization of the material whose composition is Au329(SR)84 precisely, therefore referred to as a nanomolecule. The size homogeneity was shown by electron microscopy, solution X-ray scattering, and mass spectrometry. We proposed its atomic structure to contain the Au260 core using experiments and modeling of a total-scattering-based atomic-pair distribution functional analysis. HAADF- STEM images shows fcc-like 2.0 ± 0.1 nm diameter nanomolecules.

Research Organization:: Argonne National Laboratory (ANL)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science - Office of Basic Energy Sciences

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1239689

Journal Information:: Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 20 Vol. 119; ISSN 1932-7447

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

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