期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 4, 期 6, 页码 975-981出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz400111d
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资金
- National Center for Research Resources [5 G12RR013646-12]
- National Institute on Minority Health and Health Disparities from the National Institutes of Health [G12MD007591]
- NSF [DMR-1103730, DMR 0934218, CHE-1126708]
- Office of Basic Energy Sciences of the U.S. Department of Energy [FG05-86ER45234]
- Air Force Office of Scientific Research
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1126708] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1103730] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [934218] Funding Source: National Science Foundation
Determination of the total structure of molecular nanocrystals is an outstanding experimental challenge that has been met, in only a few cases, by single-crystal X-ray diffraction. Described here is an alternative approach that is of most general applicability and does not require the fabrication of a single crystal. The method is based on rapid, time-resolved nanobeam electron diffraction (NBD) combined with high-angle annular dark field scanning/transmission electron microscopy (HAADF-STEM) images in a probe corrected STEM microscope, operated at reduced voltages. The results are compared with theoretical simulations of images and diffraction patterns obtained from atomistic structural models derived through first-principles density functional theory (DFT) calculations. The method is demonstrated by application to determination of the structure of the Au-144(SCH2CH2Ph)(60) cluster.
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