Sterically controlled mechanochemistry under hydrostatic pressure
نویسندگان
چکیده
منابع مشابه
Conformation of p-terphenyl under hydrostatic pressure.
The conformation of p-terphenyl (C18H14) and deuterated p-terphenyl (C18D14) has been investigated, using high-pressure infrared spectroscopy at liquid-helium temperatures. First-principles calculations, together with the experimental results, were performed to determine the structure of p-terphenyl in the twisted conformation. At low temperatures and pressures, p-terphenyl belongs to the C2 po...
متن کاملInfrared spectroscopy of biphenyl under hydrostatic pressure
Changes in the conformations of conjugated molecules affect the optical and electronic properties significantly. Hydrostatic pressure has been used to probe the conformations of biphenyl (C12H10) and deuterated biphenyl (C12D10) at liquid-helium temperatures. Infrared ~IR! spectra of these materials have been taken up to a pressure of 2 GPa. A disappearance of certain IR absorption peaks has be...
متن کاملPhotoluminescence from ZnS1ÀxTex alloys under hydrostatic pressure
ZnS12xTex (0.022) isoelectronic centers. The pressure coefficients of the emission bands ar...
متن کاملPressure Study on Mn Doped KDP System under Hydrostatic Pressure
High Pressure Raman scattering measurements of KDP:Mn were performed at room temperatures. The X-ray powder diffraction patterns taken at room temperature by Rietveld refinement showed that doped samples of KDP-Mn have the same tetragonal structure of a pure KDP crystal, but with a contraction of the crystalline cell. The behavior of the Raman spectra, in particular the emergence of a new modes...
متن کاملDEFECT STUDIES OF GaN UNDER LARGE HYDROSTATIC PRESSURE
GaN plays a key role in the exploration of the properties of group-III nitrides. As grown GaN often shows a high electron concentration, e.g. 1019 cm-3, of as yet unidentified origin. Applying large hydrostatic pressure we studied the behavior of these donors and a frequently observed strong luminescence band at 3.42 eV. We find a drop of the electron concentration to 3x1017 cm-3 at 27 GPa and ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 2018
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature25765